CN108140126A - High security key scanning system - Google Patents

Abstract

Provide a kind of high safety key scanning system and method.The scanning system can include being configured to determine that the information of main high security key and the sensing device further of feature and analyze the information of master key and the Digital Logic of feature.Sensing device further can be configured as the information for the geometry for capturing the feature about incision in master key surface.Logic can analyze the information in relation to the geometry, and its known feature with the high security key pattern is compared, to determine that the data needed for this feature are replicated on new high security key billet.The system can be configured as carrys out catch surface geometry using camera or other imaging devices.The system can capture desired feature using object coating technology, irradiation technique, filtering technique, image processing techniques and Feature Extraction Technology.

Description

High security key scanning system

Cross References to Related Applications

This application claims U.S. Invention Application No. 15/227,619, filed August 3, 2016, entitled "High Security Key Scanning System" and U.S. Provisional Application No. 15/227,619, filed August 3, 2015, entitled "High Security Key Scanning Priority of Patent Application No. 62/200208, which is hereby incorporated by reference in its entirety.

technical field

This invention relates generally to apparatus and methods for duplicating keys and, more particularly, to utilizing electronics to read a unique feature cut into the surface of the blade of a key, such as a high security key And optionally provide this data to the apparatus and method of the key duplication machine.

Background technique

Key duplication techniques for standard single-sided keys and double-sided keys are well known. Typically, the key to be duplicated (the master key) is duplicated on an appropriately identified key blank using any number of different systems known in the art. However, there is a wide range of high security locks and key types, where the locks are specifically designed to be difficult to break and the keys are specifically designed to be difficult to duplicate. As such, the process for duplicating high security keys is often quite complex and requires expensive and complex key cutting equipment. Furthermore, successful duplication of high security keys typically requires high precision in order to properly operate the lock. Because of all of these constraints, successful duplication of high security keys also typically requires highly trained and experienced personnel such as locksmiths.

There are many different types of high security locks and keys. For example, some require that the tooth cuts in the blade be cut at different compound angles. These angled cuts make duplication on standard key duplication rigs unlikely. Other types of high security keys include unique surface features cut into the key blade that do not completely penetrate the key blade (such as internal cutting, sidewinder (also known as laser cutting), dimples) and sidebar keys. Again, such chipping makes duplication on standard key duplication equipment unlikely. Other types of high security keys utilize electronic transponders to authenticate the keys. Such electronics require specialized equipment to read and replicate transponder functions. There are also high security keys that utilize non-standard blade geometries, such as cross or tubular, and other unique blade style types. The geometry and cutting pattern of these keys all require dedicated reproduction equipment. There are many variations of all of these types of high security locks and keys, and others, as they have been produced by many different lock manufacturers over the years. Some even utilize more than one type of high security feature in order to claim a higher level of security.

The duplication of high security keys has been largely limited to the locksmith market due to the complexity, the extensive range of expensive duplication equipment and all this requiring in-depth experience and knowledge. For these same reasons, other stores that offer retail key cutting services, such as hardware stores, home improvement stores, and auto parts stores, are not able to provide these services. A system that reduces the cost of equipment and reduces the level of skill required to duplicate high security keys would be very valuable to the retail key duplication industry.

Contents of the invention

A high security key scanning system is provided. The scanning system includes a sensing device configured to determine information and characteristics of the master high security key and digital logic to analyze the information and characteristics of the master key. The sensing device may be configured to capture information about the geometry of features cut into the face of the master key. The logic can analyze information about the geometry and compare it to known characteristics of the style of the high security key to determine the data needed to replicate the characteristic on a new high security key blank.

In an embodiment, the system may be configured to measure surface geometry using an imaging system such as a camera or other imaging device. The system can utilize object coating techniques, illumination techniques, filtering techniques, image processing techniques, and feature extraction techniques to measure desired features.

In one embodiment, as shown, there is provided a high security key scanning system comprising an imaging device configured to capture at least one image of a portion of a first side of a blade of a high security master key. The first light source may be positioned to direct light at a first angle towards the first side of the blade of the high security master key at the imaging location. A second light source may be positioned to direct light at a second angle towards the first side of the blade of the high security master key at an imaging location, wherein the captured image reveals at least a portion formed on the blade surface features in the face. Logic may be configured to analyze the at least one captured image to determine characteristics of the surface features. The logic may also compare the characteristics of the surface features to cut code data for known lock styles. The cutting code data may include at least one of a spacing dimension and a cutting location. The logic may determine at least one cutting location or at least one cutting code of the high security master key. Cutting locations or said cutting codes can be used to copy high security keys from key blanks. The high security master key can be a Rattlesnake key. The first light source and the second light source may be controlled to be turned on and off individually to direct light onto the face of the high security master key. The imaging device may capture multiple images of the high security master key, each from a different illumination scene.

A backlight may be positioned to direct light toward a second side opposite the first side of the blade of the high security key, the backlight may be configured for use with logic for determining one or more of One: Identify the master key type, verify that the master key is secured, and determine the orientation of the master key. At least one of the first light source and the second light source can direct collimated light toward the imaging location. The high security key may include a pathway formed on the blade of the high security master key. The logic may analyze the characteristics of the surface features to determine the texture formed on the surface of the master key. The determined pattern formed can be used to reproduce the high-security master key on the key blank.

In one embodiment, the third light source may be positioned to direct light at a third angle towards the first side of the blade of the high security master key at the imaging location and the fourth light source may be positioned to direct light at a fourth angle Light is directed toward the first side of the blade of the high security master key at the imaging location. The first angle, the second angle, the third angle and the fourth angle may be different relative to the horizontal axis of the imaging location.

In another embodiment as shown in the figures, there is provided a method for scanning a high security master key, the method comprising illuminating a first angle formed on a blade of the high security master key from a first angle. Surface features on one side. The surface features formed on the first side of the blade of the high security master key may be illuminated from a second angle, the first angle and the second angle may be different relative to the horizontal imaging position axis. At least one image of a portion of an illuminated surface of a blade of the high security master key may be captured. The surface features can be characterized. The characteristics of the surface features can be compared to cut code data for known lock styles. At least one cutting code for the master key may be determined. The master key may be duplicated with the at least one cutting code.

In one embodiment, the step of illuminating surface features from a first angle may be provided by a first light source and the step of illuminating surface features from a second angle may be provided by a second light source, wherein the first light source and the second light source Two light sources are controlled to be on or off before capturing at least one image to create different illumination angles. Multiple images may be captured, each with a different illumination scene. The surface characteristics may be determined with logic configured to analyze a plurality of images of said different illumination scenarios. The surface feature may comprise a texture formed on said blade of the master key. The characteristics of the surface features can be compared to cut location data for known lock styles. At least one cutting location may be determined for the master key. Cutting locations may be represented by physical measurements that are determined by logic. A high security master key can be duplicated by using said measurements. The characteristics of the surface features may be analyzed to measure the texture formed on the surface of the high security master key. The high security master key can be duplicated by using the measured value. Backlighting can be used to illuminate the high security master key and can identify the appropriate key blank associated with the high security master key.

Description of drawings

The objects and advantages of the invention, as well as the operation of the invention, may be better understood by referring to the following detailed description read in conjunction with the following illustrations, wherein:

Figure 1 shows an example of a standard cut key equipped with conventional key duplication;

Figure 2 shows an example of a high security key utilizing features cut into the blade surface;

Figure 3 shows an example of a typical internally cut high security key and highlights the geometry to be measured;

4A is an exploded rear perspective view of an embodiment of a scanning system configured to capture images of the shape of features cut into the surface of a high security key blade;

4B is an exploded front perspective view of the scanning system of FIG. 4A configured to capture images of the shape of features cut into the surface of the high security key blade;

Figure 5 is a perspective view of an embodiment of a scanning system in which object coating techniques can be utilized to reduce spectral reflection on the surface of a high security key blade;

Figure 6A shows a top view of a high security keyblade imaged with an illumination technique that does not use collimated illumination;

6B shows a top view of the high security keyblade of FIG. 6A that has been utilized with illumination using collimated illumination from a first angle used to accentuate the shape of features cut into the surface of the high security keyblade technical imaging;

Figure 6C shows a top view of the high security key blade of Figures 6A and 6B, which has been utilized using collimation from a second angle used to accentuate the shape of features cut into the surface of the high security key blade Illumination technology imaging;

7A is a perspective view of a scanning system in which multiple light sources can be utilized to collect multiple sets of illuminated images;

7B is a schematic diagram of the scanning system of FIG. 7A showing multiple light sources relative to a common axis;

8 is an exploded perspective view of a scanning system where filtering techniques such as polarization can be utilized to accentuate the shape of features cut into the keyblade surface;

Figure 9A shows a top view of a high security keyblade imaged without the application of image processing techniques;

Figure 9B shows a top view of the high security key blade of Figure 9A imaged using image processing techniques, wherein a threshold level is utilized to highlight the shape of features cut into the surface of the blade;

Figure 10 shows a top view of a high security key blade imaged with a feature extraction technique such as edge detection, which can be utilized to highlight the shape of features cut into the surface of the blade;

11 is a perspective view of an embodiment of a key scanning machine configured to capture images of the shape of features cut into the surface of the blade;

Figure 12A shows a perspective view of a key duplication machine with an integrated scanning system configured to capture images of the shape of features formed in the high security key blade surface and replicated on the key blank the shape of the key;

Figure 12B shows a partial perspective view of a key duplicating machine with an integrated scanning system configured to capture images of the shape of features formed in the high security key blade surface, and on the key blank Copy the key shape;

Figure 12C shows a perspective view of a key duplication machine with an integrated scanning system configured to capture images of the shape of features formed in the high security key blade surface and replicated on the key blank the shape of the key; and

Figure 13 is a flow chart illustrating an embodiment of a method for utilizing electronics to read a unique feature cut into the blade surface of a key, such as a high security key, and provide this data to a key duplication machine.

Detailed ways

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. It is to be understood that other embodiments may be utilized and structural and functional changes may be made without departing from the corresponding scope of the present invention.

A system 100 and method for scanning surface features of supplied high security type keys is provided. The system analyzes a high security master key to be copied (such as a high security house key, a high security car key, or other high security key) and determines the characteristics of the key to be copied to a high security key blank Appropriate data required on the . The systems and methods described herein can be used alone to scan high security keys, or can be used in conjunction with other systems to replicate high security keys.

Figure 1 shows a standard key 50 with bitting formed around the outer profile of the key blade. Figure 2 illustrates various embodiments of a high security type key 200 in which such systems and methods are capable of scanning, imaging and duplication. Obviously, the system and method can also be used to scan the face of a standard key. In a preferred embodiment, the scanning system analyzes the characteristics of the surface features 202 formed in the face 204 of the blade 206 of the master key 200 (FIG. 2). Surface features 202 may include a pathway formed down the middle of the face of the blade, a single pathway formed near one edge of the face of the blade, a pair of opposing pathways formed near the edge of the face of the blade, Dimples formed in the face of the blade, notches formed in the face of the blade, or other geometric features formed or otherwise shaped in the face of the blade to engage with components of a corresponding lock. "Formed grains" may include grains formed down the middle of the face of the blade, a single grain formed on the face of the blade, a pair of opposing grains formed near the edge of the face of the blade. These features may be present on only one side of the blade, or may be present on both sides of the blade. The contours formed in one or both faces of the high security keyblade are contoured to mate with security components of an associated lockset, which may be uniquely configured. Once the high security key is engaged with the security feature of the lock, the key head can be turned to retract the security feature, such as a bolt. FIG. 3 illustrates an embodiment of a geometry 230 having surface features 202 formed in the face 204 of the blade 206 of a master key to be measured/scanned by the disclosed system.

In a preferred embodiment, system 100 may utilize 2D imaging techniques. For example, scanning system 100 may utilize some combination of object coating techniques, illumination techniques, filtering techniques, image processing techniques, and feature extraction techniques to scan and analyze physical characteristics of the master key. Other embodiments include 3D imaging techniques such as stereo imaging; triangulation techniques such as laser spots, laser bars, structured light, modulated light; or the use of any other imaging technique to scan surface geometry. The imaging system may also be non-optical based, such as by using ultrasound or x-ray techniques. As shown in FIGS. 4A and 4B , the imaging system 100 can include an image capture device 110 and can include at least one mirror 120 , wherein the image capture device can be aligned with the mirror so that the optical path 112 is aligned with the master key at an imaging position 125 . 200 alignment.

In one embodiment, the optical imaging device 110 is a camera and the captured images are photographic images. In an embodiment, the camera is a digital camera and the captured image is a digital image. Digital images can be stored as files or as data and can be logically analyzed. Although the scanning system is described herein as including an imaging system, it will be appreciated that other systems known in the art may be used to analyze the parameters of the master key. For example, scanning systems may use feeler gauges, capacitive sensors, probes, or other electromechanical measuring devices. Scanning systems can also be integrated with antennas that read transponders on high security keys.

As used herein, the term "logic" includes, but is not limited to, hardware, firmware, software, and/or combinations thereof, to perform function(s) or action(s) and/or cause Function or action of logic, method and/or system. For example, logic may include software controlled microprocessors, discrete logic like application specific integrated circuits (ASICs), analog circuits, digital circuits, programmed logic devices, memory devices containing instructions, etc., based on the desired application or needs. Logic may include one or more gates, combinations of gates, or other circuit components. Logic could also be fully implemented as software. Where multiple logical logics are described, the multiple logical logics may be incorporated into one physical logic. Similarly, where a single logical logic is described, that single logical logic may be distributed among multiple physical logics. Furthermore, as used herein, the term "database" includes physical and/or logical entities that can store data. For example, a database may be a conventional database, table, file, list, queue, heap, memory, register, or the like. A database can reside in one logical and/or physical entity, and/or can be distributed between two or more logical and/or physical entities. Processing logic may be assembled using techniques, algorithms, packaging, and other capabilities known in the art.

The scanning system may include a database for storing key-related information ("key data"). The key data may include characteristics of known high security keys, such as key length, key shape, surface geometry, and other characteristics. The database may associate key data with particular key blanks or with types or groups of keys. For example, the database can store key data for different key manufacturers. The database can be accessed by the scanning system to compare the characteristics of the scanned master key with the key data stored in the database. Such comparisons can be used to determine the data required to correctly replicate the unique geometry of the master high security key onto the new high security key blank.

In an embodiment, the database stores key data associated with cutting codes for use with known lock styles. For a standard cut key 50, the cut code data is referred to as tooth data and consists of the spacing and depth dimensions associated with the mating pins in the lockset. Such cutting code data is referred to as cutting location data for the high security key 200 and consists of the spacing and cutting location dimensions associated with the mating components of the high security lock. The spacing between mating parts may not vary for any particular lock style. In this way, each master key can be changed at each spaced position only in the cutting position. The chipping code for a particular master key is used to record the chipping location at each known interval. Traditionally, chipping codes are represented as numeric or alpha-numeric codes that contain information about how the key is to be chipped by a code chipping machine. Typically, a chipping code is a set of letters and/or integers (eg, "K263") that can be interpreted or decoded from a key code map or chipping code list. The code may also be represented by a set of cutting locations defining the shape of the cutting at spaced locations on each side of the key to operate the lock. These cutting locations can be represented by integer codes (e.g., "331351" and "266431"), or by physical measurements (e.g., "0.285, 0.285, 0.313, 0.285, 0.256, 0.313 inches" and "0.299, 0.242, 0.242, 0.270, 0.285, 0.313 inches") to represent.

It will be understood that the database is not limited to key data and cutting code data. In addition, the database can store information related to other identification parameters of the key. The measurement system can combine other key parameters with cutting information to narrow down the possible key blanks.

In a preferred embodiment, imaging system 100 may be used to analyze master high security key 200 and determine the data required to replicate the key. The imaging system 100 can utilize a combination of imaging techniques to properly analyze the physical characteristics of the master key. Such imaging techniques include object coating techniques, illumination techniques, filtering techniques, image processing techniques, and feature extraction techniques.

As shown in FIG. 5, the imaging system 100 may include the application of a coating 145 on the surface of the master high security key 200 in order to eliminate various spectral reflections. This can improve the quality of the data extracted from the image. Such coatings may include powdered or liquid materials and may be applied using coating processes such as spray coating, electrochemical deposition or roll application. Coating 145 may also be a thin layer of material induced to be applied to the surface of the high security key by cooling the blade with a refrigerant.

Additionally, as shown in FIGS. 4A, 4B, 7A, and 7B, the imaging system 100 may utilize illumination techniques to highlight the surface geometry of the blade 206 of the high security key 200 to be scanned. In particular, various types of light sources and various positions of light sources relative to image position 125 may be utilized. For example, various colored light sources may be used to accentuate certain features on the master key blade 200 . The master key can be positioned at the imaging location 125, wherein the first light source 130A and the second light source 135A can also be positioned to direct light to the imaging location 125, so that when the high security key 200 is positioned at the imaging location 125 Various light types and angles are allowed to illuminate the first side 155 of the high security key 200. Additionally, third light source 130B and fourth light source 135B may also be positioned to direct light toward first side 155 of high security key 200 at imaging location 125 to allow various light types and angles to illuminate the sides of high security key 200. first side 155 . The first light source 130A may be bright field illumination and the second light source 135A may be dark field illumination. Additionally, the third light source 130B may be brightfield illumination, while the fourth light source 135B may be darkfield illumination. However, any combination of brightfield illumination and darkfield illumination may be provided by any combination of the first light source, the second light source, the third light source, and the fourth light source, and this disclosure is not limited thereto. The first light source 130A may include at least one first overhead light 132, which may include a row of lights. First overhead light 132 may be positioned adjacent to first side 150 of imaging location 125 to direct light toward first side 155 of high security master key 200 at imaging location 125 . The third light source 130B may include at least one second overhead light 134, which may include a row of lights. Second overhead light 134 may be positioned adjacent to opposite second side 160 of imaging location 125 to direct light toward first side 155 of high security master key 200 at imaging location 125 .

The second light source 135A may include at least one first bottom light 142, which may include a row of lights. First bottom light 142 may be positioned adjacent to first side 150 of imaging location 125 to direct light toward first side 155 of high security master key 200 at imaging location 125 . The fourth light source 135B may include at least one second bottom light 144, which may include a row of lights. Second bottom light 144 may be positioned adjacent to opposite second side 160 of imaging location 125 to direct light toward first side 155 of high security master key 200 at imaging location 125 .

First top light 132 and second top light 134 and first bottom light 142 and second bottom light 144 may be configured to allow light path 112 to pass through system 100 and reflect off mirror 120 for imaging when master key 200 is positioned at imaging location 125 Capture the image of the master key 200 at the same time. The lamps and lamp locations allow the light path 112 to be uninterrupted from the perspective of the imaging location 125 . Additionally, in one embodiment, a light or an array of lights may be positioned to provide collimated light at various angles towards the first side 155 of the high security master key 200 .

First light source 130A may be angled toward imaging position 125 at a first angle A relative to horizontal imaging position axis 172 . Imaging location axis 172 may be a horizontal axis relative to the center of imaging location 125 . See Figure 7B. Second light source 135A may be angled toward imaging position 125 at a second angle B relative to horizontal imaging position axis 172 . The third light source 130B may be angled toward the imaging location 125 at a third angle C relative to the imaging location axis 172 . The fourth light source 135B may be angled toward the imaging location 125 at a fourth angle D relative to the imaging location axis 125 . With respect to the horizontal imaging position axis 172 , the fourth angle D may be greater than the third angle C, the third angle C may be greater than the second angle B, and the second angle B may be greater than the first angle A. First overhead light 132 and second overhead light 134 may be positioned farther from imaging location 125 than first bottom light 142 and second bottom light 144 .

The positions and angles of the first light source, the second light source, the third light source and the fourth light source can also be identified with reference to the vertical imaging position axis 170 . In one embodiment, the first dome light 132 and the second dome light 134 may be substantially symmetrical to each other about the axis 170 . Also, the first bottom light 142 and the second bottom light 144 may be substantially symmetrical to each other with respect to the axis 170 . In another embodiment, the first dome light 132 and the second dome light 134 may be generally asymmetrical to each other with respect to the axis 170 . Also, first bottom light 142 and second bottom light 144 may be generally asymmetrical to each other with respect to axis 170 . In yet another embodiment, the system may include multiple levels of light sources, such as top, middle, bottom, and the like. This disclosure contemplates various arrangements and configurations of light sources relative to imaging location 125 and is not limited in this respect.

In some cases, scattered light may be used to eliminate shadows caused by surface features 202 formed in face 204 of blade 206 of master key 200 . In other cases, certain surface features 202 may be accentuated by creating shadows using unscattered or collimated light from certain angles. By illuminating an object with collimated light from many different angles, many different types of surface features can be accentuated against their shadows. Images can then be collected for each different illumination angle and processed in order to properly analyze all surface features and geometries. Axial scattered light can be used to highlight certain feature types. Infrared light can also be used as a light source to eliminate reflections and reduce chromatic aberration. The light sources 130A, 130B, 135A, 135B can be operated to create collimated light from different illumination angles relative to the imaging location 125 and the key positioned therein. Each of the lights or banks of lights 132 , 134 , 142 , 144 may be controlled to provide light of various colors and intensities towards the imaging location to manipulate the image of the master key 200 .

Additionally, a backlight 175 may be provided in the system 100 . Backlight 175 may direct light toward second side 156 of high security master key 200 at imaging location 125 . The second side 156 of the key 200 may be opposite the first side 155 . Backlight 175 may be positioned adjacent to the opposite side of imaging location 125 relative to light sources 130A, 130B, 135A, and 135B. The backlight 175 may be positioned opposite the direction of the light path 112 relative to the master key 200 . Backlight 175 can provide illumination on the back of the master key and can be turned on and off. Backlighting may be used with logic for identifying the master key type, verifying that the master key is secured, and determining the orientation of the master key.

It will be appreciated that multiple images may be collected with different illumination scenarios. For example, the light source can be moved or the key can be moved to create a desired angle. Furthermore, multiple light sources can be used to create multiple illumination scenes by operating the various lamps as desired. Additionally, various different types of light sources (such as different colored lamps), bright and dark light fields from different angles can be utilized to collect multiple sets of illuminated images from an image capture device at a stationary location. Such methods can utilize color filters in the logic to create a set of images representing each individual angle of illumination. This multicolor technique reduces system complexity and creates absolute registration within the set of images.

6A, 6B and 6C show various images of the high security key 200 with and without collimation angles. Figure 6A shows a top view of a blade 206 of a high security key 200 having specific surface features 202 imaged with an illumination technique that does not use collimated illumination. 6B shows the high security key of FIG. 6A utilizing collimated illumination from a first angle used to accentuate the shape of surface features 202 cut into face 204 of high security key blade 206. Irradiation technique imaging. This image shows a shadow effect along the bottom 220 of the surface feature 202 and a brighter illumination effect along the top 210 of the surface feature 202 . In one embodiment, the image of FIG. 6B may be understood as having light provided from first top light 132 of first light source 130A, while first bottom light 142 , second top light 134 , and second bottom light 144 provide no light.

6C shows the high security key of FIG. 6A utilizing collimated illumination from a second angle used to accentuate the shape of surface features 202 cut into face 204 of high security key blade 206. Irradiation technique imaging. This image shows a shadow effect along the top 210 of the surface feature 202 and a brighter illumination effect along the bottom 220 of the surface feature 202 . In one embodiment, the image of FIG. 6C may be understood as having light provided from second top light 134 of third light source 130B, while second bottom light 144 , first top light 134 , and first bottom light 144 provide no light.

This method is an example of capturing various images of master key 200 with light from various directions at various angles towards imaging location 125 . The image may then be processed by a logic system to identify salient portions of surface features 202 . These processes allow data related to the geometric pattern of surface features 202 to be captured with increased efficiency and accuracy.

As shown in FIG. 8 , in one embodiment, imaging system 100 may include a first filter 260 and a second filter 265 . The filters may be aligned along the optical path 112 of the imaging device 110 . Logic's filtering techniques may enhance the contrast of the surface features 204 of the master key 200 . Filters 260, 265 may include lenses, which may include chromatic, interference, neutral density, and polarizing types. Color filters enhance the contrast of some colors and reduce the contrast of others. Interference filters can also be used to enhance certain light bands. Neutral density filters can be used to reduce the overall brightness if it is an image. Polarizing filters can be used to reduce specular reflections. In some cases, both the light source from the first light field 130 or the second light field 135 and the lens of the imaging device 110 may have polarization filters 260 , 265 . Although filtering techniques generally involve physical lenses, it will be appreciated that digital techniques can also be utilized to produce logical filtering effects. In one embodiment, the first filter can be positioned adjacent to the imaging device 110 , while the second filter 265 can be positioned adjacent to the mirror 120 or the imaging location 125 .

Additionally, image processing techniques can be used to highlight the geometry of the surface to be scanned. As shown in Figures 9A and 9B, such techniques may include digital image processing functions to adjust features such as exposure, brightness, contrast, hue, saturation, high-pass filtering, low-pass filtering, threshold level adjustments and including image masking, overlay and other pixel-wise features for multi-image comparison. These techniques are typically applied to either the entire image or selected regions of interest. FIG. 9A shows a top view of a blade 206 of a master key 200 having certain surface features 202 imaged with illumination techniques and not processed by using various image processing techniques. 9B shows the high security key of FIG. 9A that has been imaged using an illumination technique in which a thresholding technique is applied to capture the precise geometry of the surface features 202 cut into the face 204 of the high security key blade 206. . This image shows the effect of thresholding along the top 210 and bottom 220 of the surface feature 202 . In one embodiment, the image of Figure 9B is the result of applying a processing technique to the image of Figure 9A.

The imaging system 100 may use feature extraction processing techniques such as edge detection, blob analysis, and pattern recognition to analyze the highlighted geometry and determine the geometry of desired features. In one embodiment, as shown in FIG. 10 , edge detection may be used to highlight edges 220 of surface features 202 . In another embodiment, pixel-by-pixel gradient detection may be used to identify edges of highlighted features along surface feature 202 . In a preferred embodiment, a form of blob analysis may be utilized to isolate edge points representing the contours of highlighted surface features. An ordered list of these points can then be processed to generate positional registration and edge data. Data analysis can be enhanced with mathematical abstractions such as splines, Fourier analysis, neural networks, Hadamard transforms, and Hough transforms.

Scanning system 100 may be used as a key data capture device configured to measure the shape of features cut into the surface of a high security key blade and determine the data needed to make a replica of the master key. Such a key data capture device may be part of a key identification machine or a key scanning system machine 300 as shown in FIG. 11 . This machine 300 may include a housing with a plurality of light sources 310 angled toward the imaging location 125 . The machine 300 may be equipped with multiple light sources, which may include brightfield illumination and darkfield illumination, and may be configured to measure the shape of surface features of the master key. Machine 300 may be configured to identify suitable key blanks and determine the data required to make a replica of the master key. This data can then optionally be used by a separate key cutting machine or key duplication machine to cut high security key blanks in order to duplicate the master key.

The scanning system 100 may also be integrated into a key scanning and duplicating machine 400 as shown in Figures 12A, 12B and 12C. For example, scanning system 100 may be used in conjunction with a key duplication system, such as the key duplication machine disclosed in US Patent No. 7,891,919, which is hereby incorporated by reference in its entirety. Such systems would be able to assist in identifying suitable key blanks, determining the data required to make replicas of a master key, and cutting high security key blanks in order to duplicate the master key. Additionally, scanning system 100 may be used in conjunction with the systems disclosed in US Patent Nos. 8,644,619; 8,634,655; 7,890,878; and 9,101,990, which are hereby incorporated by reference in their entirety.

As described above, a method of scanning the master key 500 is provided. This method is illustrated by the flowchart shown in FIG. 13 . The method comprises the step of illuminating a surface feature formed on a blade of said master key from a first angle A. The surface features formed on the blade of the master key may be illuminated from a second angle B. The first angle A and the second angle B may be different relative to the imaging position axis 175 . At least one image of a portion of the blade of the master key is captured. The surface features are characterized. Logic can be used to characterize surface features and to analyze captured images of the blade. This logic can be used to compare the characteristics of the surface features to the cut code data of known lock styles. The logic may also be used to determine at least one chipping code for the master key. The at least one cutting code may be used to duplicate the master key. The surface feature 202 includes a texture 230 formed on the blade of the master key 200 . The surface features may be illuminated from a first angle A provided by the first light source 130A. The surface features may be illuminated from a second angle B provided by the second light source 135A. The first light source 130A and the second light source 135A may be controlled to be turned on or off before an image is captured by the imaging device 110 to create different illumination angles. Imaging device 110 may capture multiple images, where each image includes a different illumination scene provided by at least one of light sources 130A, 130B, 135A, and 135B and backlight 175 . The surface characteristics may be determined with logic configured to analyze the plurality of images, each image including a different illumination scene.

Additionally, the characteristics of the surface features can be compared to the cut locations of known lock styles. This comparison can be performed by logic where the cutting location can be represented by a physical measurement. The measured value can also be determined by the logic. The master key can be duplicated by using said measurements. Alternatively, the logic may analyze the characteristics of the surface features to measure the lines 230 formed on the surface of the master key. The texture 230 formed may be represented by physical measurements.

Additionally, backlit images can be captured. Logic can analyze the backlight image and compare it to a database of known key blanks. The appropriate key blank associated with the master key may be logically identified and communicated to the user or used to identify the appropriate cutting code data for the associated master key.

Although the invention has been described in terms of scanning surface features on high security keys, its use is by no means limited to only surface features or only high security keys. Many of the inventive concepts can be used on outside edge features and on standard, edge-cut home and car keys.

The invention has been described above, and obviously modifications and alterations will occur to others upon the reading and understanding of this specification. The following claims are intended to cover all modifications and changes provided they come within the scope of the claims and their equivalents.

Claims (30)

1. A high-security key scanning system, including: an imaging device configured to capture at least one image of a portion of the first side of the blade of the high security master key; a first light source positioned to direct light at a first angle towards a first side of the blade of the high security master key at an imaging location; a second light source positioned to direct light at a second angle toward the first side of the blade of the high security master key at the imaging location, wherein the captured image reveals the image formed on the Surface features in the face in at least a portion of the blade; and Logic configured to analyze at least one captured image to determine a characteristic of the surface feature. 2. The key scanning system of claim 1 wherein said logic further compares said characteristics of said surface features to cut code data for known lock styles. 3. The key scanning system of claim 2, wherein the cut code data includes at least one of a spacing dimension and a cut location. 4. The key scanning system of claim 2, wherein the logic determines at least one chipping location or at least one chipping code of the high security master key. 5. The key scanning system of claim 4, wherein the cut location or the cut code is used to reproduce a high security key from a key blank. 6. The key scanning system of claim 1, wherein the high security master key is a Sidewinder key. 7. The key scanning system of claim 1, wherein the first light source and the second light source are controlled to be turned on and off individually to direct light onto a surface of the high security master key. 8. The key scanning system of claim 7, wherein the imaging device captures a plurality of images of the high security master key, each from a different illumination scene. 9. The key scanning system of claim 1 , further comprising a backlight positioned to direct light toward a second side opposite the first side of the blade of the high security key, the backlight configured For use with logic for determining one or more of identifying the master key type, verifying that the master key is secured, and determining the orientation of the master key. 10. The key scanning system of claim 1, wherein at least one of the first light source and the second light source directs collimated light toward the imaging location. 11. The key scanning system of claim 1, wherein the high security key includes a pattern formed on the blade of the high security master key. 12. The key scanning system of claim 11, wherein the logic analyzes the characteristics of the surface features to determine a pattern formed on the surface of the master key. 13. A key scanning system according to claim 12, wherein the determined formed pattern is used to reproduce the high security master key on a key blank. 14. The key scanning system of claim 1 , further comprising a third light source positioned to direct light at a third angle toward the first edge of the blade of the high security master key at the imaging location. a side; and a fourth light source positioned to direct light toward a first side of the blade of the high security master key at the imaging location at a fourth angle, wherein the first angle, the second The angle, third angle and fourth angle are different relative to the horizontal axis of the imaging location. 15. A method for scanning a high security master key, the method comprising: illuminating the surface features formed on the first side of the blade of the high security master key from a first angle; illuminating the surface feature formed on the first side of the blade of the high security master key from a second angle, the first angle and the second angle being different relative to a horizontal imaging position axis ; capturing at least one image of a portion of the illuminated surface of the blade of the high security master key; and The surface features are characterized. 16. The method of claim 15, further comprising comparing said characteristics of said surface features to cutting code data of known lock styles. 17. The method of claim 15, further comprising determining at least one chipping code for the master key. 18. The method of claim 17, further comprising replicating the master key with the at least one cutting code. 19. The method of claim 15, wherein said step of illuminating surface features from a first angle is provided by a first light source, and said step of illuminating surface features from a second angle is provided by a second light source is provided, wherein the first light source and the second light source are controlled to be turned on or off to create different illumination angles prior to capturing at least one image. 20. The method of claim 19, wherein a plurality of images each having a different illumination scene are captured. 21. The method of claim 20, wherein the surface characteristics are determined with logic configured to analyze a plurality of images of the different illumination scenes. 22. The method of claim 21, further comprising comparing the characteristic of the surface feature with cutting location data for known lock patterns. 23. The method of claim 22, further comprising determining at least one cutting location for the master key. 24. The method of claim 23, wherein the cutting location is represented by a physical measurement, the measurement being determined by the logic. 25. The method of claim 24, further comprising replicating the high security master key by using the measured value. 26. The method of claim 15, wherein the surface feature comprises a texture formed on the blade of a master key. 27. The method of claim 26, further comprising analyzing the characteristics of the surface features to measure the texture formed on the surface of the high security master key. 28. The method of claim 27, further comprising duplicating the high security master key by using the measured value. 29. The method of claim 15, further comprising backlighting the high security master key. 30. The method of claim 29, further comprising identifying a suitable key blank associated with the high security master key.