CN1357859A - Scanning method and device for automatically identifying the size of an image object - Google Patents

Abstract

The invention discloses a scanning method and a device for automatically distinguishing the size of an image object, which are applied to the process of pre-scanning an image object by an optical scanning device. The scale pattern is designed in the optical scanning device, the scale pattern and the image object can obtain a measurement relation on a scale, the measurement relation of the scale is marked by a plurality of patterns to relatively calculate the size of the image object, wherein the measurement relation and the size of the image object can be processed and calculated by pre-design, and the change of the luminance is calculated in the scanning process.

Description

Scanning method and device for automatically identifying the size of an image object

technical field

The present invention relates to a scanning method and device for automatically distinguishing the size of an image object, in particular, during the pre-scanning process of an image object by an optical scanning device, the image object can be known immediately after scanning the image object size, and at the same time end the pre-scanning process.

Background technique

High-tech technology is changing with each passing day, especially microelectronics technology has new developments almost every day, and computers have penetrated into every family and business, becoming an indispensable electronic product in modern life, and with the prevalence of computer multimedia, the need for More peripheral products are used as input and output devices, and due to the improvement of optoelectronic semiconductor technology, the product technology of computer-related peripheral equipment such as optical scanners is becoming more and more mature, and it is becoming more and more popular. It has become a computer peripheral. A must-have product in a device. Among them, the optical scanner has become an important computer input and output peripheral equipment. The optical scanner mainly uses a light source module to provide a light source to scan the document, and then uses an optical path device to receive the document reflected by the light source module during scanning. Image, and then use the charge-coupled device to capture the document image, convert the photoelectric signal into a digital signal, and finally send it to the computer for image processing.

Please refer to FIG. 1 , which is a three-dimensional schematic diagram of a traditional flat-bed optical scanner capable of scanning reflective image objects. As shown in Figure 1, the flat bed optical scanner (Flat Bed) 1 comprises a loam cake 10 and a hollow housing 11, the upper side surface of the housing 11 is provided with a document carrying glass (Document Window Glass) 12 to hold a The reflective document 16 to be tested is driven by a transmission device 13 to drive an image pickup device (Optical Chassis) 14 to move linearly along the direction of the guide rod 15 in the hollow casing 11 to carry out a document on the original carrying glass 12. Image scanning work for draft 16.

Please refer to FIG. 2 , which is a schematic three-dimensional structure diagram of a traditional flat-bed optical scanner capable of scanning transmissive image objects. As shown in FIG. 1 , the flatbed optical scanner 2 includes an upper cover 20 and a casing 21, the upper surface of the casing 21 is provided with an original carrying glass 22, when the scanner 2 is to scan reflective documents, The original supporting glass 22 can hold a reflective document manuscript 26, and an image capture device 24 is driven by a driving device 23 to perform linear motion image scanning along the direction of a guide rod 25 inside the hollow casing 21 to scan the original manuscript. The image scanning work of the reflective document manuscript 26 on the carrier glass 22 .

Wherein, when the scanner 2 is to perform transmissive document scanning, the original supporting glass 22 can also accommodate a transmissive sheet holder 27 , and the transmissive sheet holder 27 can be equipped with a plurality of transmissive document manuscripts 271 . Wherein the upper cover 20 is equipped with an upper light source module 28 to provide the light source to irradiate the transmissive document manuscript 271 downwards, and a transparent glass 29 is designed to allow the light from the upper light source module to penetrate downwards and irradiate the transmissive document. 271 , and the driving device 23 drives the image capture device 24 to move linearly along the direction of the guide rod 15 in the hollow housing 11 to scan the image of the transmissive document 271 on the document supporting glass 22 .

Please refer to FIG. 3A , which is a schematic cross-sectional structure diagram of a traditional flat-bed optical scanner with a transmission-type upper light source device. Wherein the shell 21 bears a transmission sheet support frame 27, and then covers the upper light source module 28, and the upper light source module 28 is provided with a light source device 281, and the light source device 281 has a light source 283 and an upper slide bar 282 is provided, and the light source device 281 moves back and forth in the upper light source module 28 according to the extension direction of the upper slide bar 282, so as to match the image capture device 24 to the transmissive document Image scanning work for manuscript 271.

Please refer to FIG. 3B , which is a schematic cross-sectional structure diagram of a traditional flat-bed optical scanner with a fixed upper light source device. Wherein, a fixed bezel 284 is arranged in the upper light source module 28, and a light source 285 is respectively arranged on both sides of the fixed bezel 284 to provide reflection of the light provided by the bezel 284 to the light source 285 And illuminate the transmissive manuscript 271 to cooperate with the image scanning work of the image capture device 24 on the transmissive manuscript 31 .

Regardless of the aforementioned optical scanner that can scan a reflective image, or an optical scanner that can scan a transmissive image, a pre-scanning action is usually performed before scanning an image object to be tested, so as to Identify the size of the image object and the required scanning range, and provide these information for scanning the exact range of the image object during formal scanning. Usually, no matter what the size of the image is, the pre-scanning process will scan all the area within the range of the size of the carrier glass, and when the formal scan is to be performed later, the scanning range also needs to be manually selected by the user. Otherwise, all the images will be scanned during official scanning, which will not only waste the user's time but also waste the memory resources of the computer system.

Please refer to FIG. 4A , which is a simple schematic diagram of a conventional image document placed on a scanner. As shown in FIG. 4A , an image document 260 is placed on a carrier transparent glass 12 of a scanner housing 11 , wherein the side to be scanned is placed downward. In the pre-scanning process of the image, it scans from Y1 to Y2 in the Y-axis direction, and scans from X1 to X2 in the X-axis direction (scanning the X-axis under a single point fixation on the Y-axis, when X Scan the next single point on the Y axis after scanning the Y axis), that is, the area W1*W2 of the transparent carrier glass 12, so even if the image to be scanned by the user is only as large as the document manuscript 260, the pre-scan The process does not only scan a 260-size area of the document.

Please refer to FIG. 4B , which is a simple schematic diagram of a scanner scanning an image document and outputting it to a display device. As shown in FIG. 4B, after performing the actions described in FIG. 4A, a scanned document image 261 obtained by scanning the document 260 is displayed on a screen 3, and the user must manually scan the document 260. The action of selecting the document manuscript image 261 is usually to select the scanned document manuscript image 261 by sliding the selection boxes 30 and 31, and then activate the formal scanning of the scanner. If the user does not select Scanning range, when the scanner scans, the entire scanning window (the range of the transparent carrier glass 12) of the scanner will be scanned, that is, the Y-axis direction in Figure 4B is scanned from Y1 to Y2, and the X-axis direction is from X1 Scan to X2.

Through the above description, it is obvious that the pre-scanning process of the traditional technology actually wastes the precious time of the user. The process is not only cumbersome but also troublesome. It is particularly important in factories or enterprises that emphasize automation, and the cumbersome operation process will naturally reduce the service life of the scanner.

Contents of the invention

The object of the present invention is to provide a scanning method and device for automatically distinguishing the size of an image object. By pre-scanning an image object, the size of the image object can be known immediately, and at the same time, the pre-scanning process is completed and the formal scanning is started. The image capture process can be automated.

The present invention can be realized by providing a method for automatically distinguishing the size of an image object, which is a process of pre-scanning an image object by an optical scanning device, comprising the following steps: a. Entering the activation mode; b. Scan, and calculate the change of luminance; c. output the image data; d. end the pre-scanning when the luminance no longer changes.

The present invention can be realized by providing another method for automatically distinguishing the size of an image object, the method comprising the following steps: a. providing a scanner with a scale pattern; b. entering the activation mode and performing a pre-scan; c. calculating the comparison The performance of the brightness of the image object and the scale pattern; d. Determine the size of the image object when the first scanning direction is fixed; e. Output image data; f. Determine the size of the image object when the second scanning direction is fixed; g. When the luminance does not change any more, end the pre-scan.

The present invention can also be realized by providing a device for automatically distinguishing the size of an image object, the device comprising: an optical scanning device; a scale pattern designed in the optical scanning device, wherein the scale pattern and an image to be measured are generated Relative position measurement relationship; a scanning method, which is that the optical scanning device scans the image to be measured, and calculates the difference between the brightness of the image to be measured and the default value during the scanning process by using the default value of the scale pattern relationship, so as to end the scanning process after knowing the size of the image object to be measured.

The present invention will be described in detail below in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a stereoscopic structure of a traditional flat-bed optical scanner capable of scanning reflective image objects.

FIG. 2 is a schematic diagram of a three-dimensional structure of a traditional flat-bed optical scanner capable of scanning transmissive image objects.

Figure 3A is a schematic cross-sectional structure diagram of a traditional platform optical scanner with a transmission-type upper light source device

3B is a schematic cross-sectional structure diagram of a traditional platform optical scanner with a fixed upper light source device.

FIG. 4A is a simple schematic diagram of a traditional image document placed in a scanner for scanning.

FIG. 4B is a schematic diagram of a scanner scanning an image document and outputting it to a display device.

FIG. 5A is a first preferred embodiment of a scale pattern in the present invention.

FIG. 5B is a first preferred embodiment in which a scale pattern is fixed on the transparent carrier glass by sticking in the present invention.

FIG. 5C is a second preferred embodiment in which a scale pattern is fixed on the transparent carrier glass by sticking in the present invention.

FIG. 5D is a first preferred embodiment of a scale pattern designed on the top cover of a scanner capable of scanning reflective documents in the present invention.

FIG. 6A is a second preferred embodiment of a scale pattern in the present invention.

FIG. 6B is a second preferred embodiment of a scale pattern designed on the top cover of the scanner capable of scanning reflective documents in the present invention.

FIG. 6C is a first preferred embodiment of a scale pattern designed on the upper cover of a scanner capable of scanning transmissive documents in the present invention.

FIG. 6D is a second preferred embodiment of a scale pattern designed on the upper cover of the scanner capable of scanning transmissive documents in the present invention.

Fig. 7 is the first preferred embodiment of the flow chart of steps of the present invention.

Fig. 8 is a second preferred embodiment of the flow chart of steps of the present invention. Description of reference numerals: 1, 2 ^- scanner; 10, 20 ^- upper cover; 11, 21 ^- shell; 12, 22 ^- transparent carrier glass; 13, 23 ^- transmission device; 14, 24 ^- image capture device; 15 , 25 ^- slide bar; 16, 26, 260 ^- document draft; 261 ^- scanned document draft image; 27 ^- transmission sheet holder; 271 ^- transmission type document draft; 28 ^- upper light source module; 281 ^- backlight device; 282 ^- upper slide bar; 283, 285 ^- light source; 284 ^- backlight panel; 29 ^- transparent glass; 3 ^- display device; 30, 31 ^- marquee; 40 ^- upper cover; 42 ^- transparent bearing glass; 420, 422 ^- Scale mark; 470 ^- transparent film; 471, 472 ^- scotch tape; 473 ^- scale pattern; 48, 49 ^- grid line icon; 50 ^- scanner cover; 51 ^- light source device; 52 ^- transparent carrying glass; 53 ^- Upper slider; 60-69 ^- steps of the first preferred embodiment of the flow chart of steps of the present invention; 70-81 ^- steps of the second preferred embodiment of the flow chart of steps of the present invention.

Detailed ways

The present invention is a method and device for automatically distinguishing the size of an image object, which is applied to the pre-scanning process of an image object by an optical scanning device, and the size of the image object can be known immediately after scanning the image object, and At the same time, the pre-scanning process is finished, and the image capture process is automated by the method provided by the present invention.

The scale pattern provided by the present invention is designed in the optical scanning device. After the image object is placed at the position to be scanned, the scale pattern and the image object can obtain a scale measurement relationship. The scale measurement relationship The size of the image object is relatively calculated by marking several patterns, wherein the measurement relationship and the relative size of the image object can be processed and calculated by a software design, that is, through a pre-design to make the pattern electronically Meaning at scales that the device can handle.

In the pre-scanning process, the luminance value change obtained by scanning the image object is calculated at the same time. When the pre-scanning process of the image object is over, the luminance value will not change continuously. This can be known that the The scanning range of the image object has ended. At this time, the width of the image object can be known. By comparing the meaning represented by the pre-design of the scale pattern, the actual size of the image object can be known and the entire pre-scanning process is completed. Then the The image capture unit moves back to the initial position, and then the image object can be formally scanned.

Therefore, a device for automatically identifying the size of an image disclosed in the present invention uses an optical scanning device, and a scale pattern is designed in the optical scanning device, and the scale pattern and the image to be measured can generate relative position measurement Then, by means of a scanning method, the optical scanning device scans the image to be tested, and uses the default value of the scale pattern to calculate the relationship between the brightness of the image to be tested and the default value during the scanning process , to end the scanning process after knowing the size of the image object to be detected.

In the present invention, there is no need to pre-scan the entire scanning window to save the entire pre-scanning time, and the user does not need to pre-estimate the size of the image, nor does the user need to manually select the image to be captured. In fact, the present invention has already found the size of the actual image object during the pre-scanning process, and the whole process of image scanning (including pre-scanning) is completed in the mode of computer automatic processing.

Please refer to FIG. 5A , which is a first preferred embodiment of a scale pattern in the present invention. As shown in FIG. 5A, several scale marks 420 are marked on a transparent carrier glass 42 that presents a document manuscript to be scanned, wherein the number of the several scale marks 420 can be designed according to the needs of the actual situation, for example The transparent carrier glass 42 is a rectangular shape, and the longer side has more scale marks than the shorter side, and the distance represented by each same scale mark 420 can be the same, of course, some smaller distances can also be designed. The scale marks 422 are marked on the transparent carrier glass 42 .

Since the carrying transparent glass 42 is a transparent object, the several scale marks 420 can be marked on the side contacting the document manuscript to be scanned, or marked on the side close to the image capture device. In addition, the markings of the several scale marks can be printed on the surface of the transparent glass 42 , or fixed on the surface of the transparent glass 42 by sticking. For example, it can be made into the form of scotch tape, and some scale marks are designed on the tape.

Please refer to FIG. 5B , which is a first preferred embodiment in which a scale pattern is fixed on the transparent carrier glass by sticking in the present invention. As shown in FIG. 5B , a transparent film 470 marked with a number of scale marks can be directly pasted on one side of the transparent carrier glass 42 .

Please refer to FIG. 5C , which is a second preferred embodiment in which a scale pattern is fixed on the transparent carrier glass by sticking in the present invention. As shown in Figure 5C, there is a longer scotch tape 471 marked with several scale marks, and a shorter scotch tape 472 marked with some scale marks, wherein the longer scotch tape 471 can be pasted on the transparent carrier glass The two longer sides, the shorter transparent tape 472 is pasted on the two shorter sides of the transparent carrier glass.

Please refer to FIG. 5D , which is a first preferred embodiment of a scale pattern designed on the cover of a scanner capable of scanning reflective documents in the present invention. As shown in Figure 5D, the inner surface of a scanner cover 40 that can scan a reflective document draft can be designed with a scale pattern of the present invention, wherein the scale pattern 473 can be designed on the inner surface of the upper cover 40 by printing, or As shown in FIG. 5C, design a sticky tape or a transparent film with scales, and those who implement this preferred embodiment do not need to design a scale pattern on the transparent carrier glass in the scanner.

Please refer to FIG. 6A , which is a second preferred embodiment of a scale pattern in the present invention. As shown in Figure 6A, the scale pattern is a pattern 48 of grid-like lines, wherein the width of each line and the number of required lines can be designed according to the actual situation, and can also be calculated and designed according to the maximum range of the image object that can be scanned by the scanner. .

Please refer to FIG. 6B , which is a second preferred embodiment of a scale pattern designed on the top cover of a scanner capable of scanning reflective documents in the present invention. As shown in Figure 6B, the inner surface of an optical scanner cover 40 that can scan reflective document manuscripts can be designed with a scale pattern of the present invention in the shape of a grid line icon 48, wherein the design mode of the grid line icon 48 is As shown in FIG. 6A, it can be designed on the inner surface of the upper cover 40 by printing, or it can be designed with an adhesive tape, or it can be designed as a grid-shaped line icon module, so as to facilitate replacement or use. And implementing this preferred embodiment, it is not necessary to design a scale pattern on the transparent carrier glass.

Please refer to FIG. 6C , which is a first preferred embodiment of a scale pattern designed on the upper cover of a scanner capable of scanning transmissive documents in the present invention. As shown in Figure 6C, the upper cover 50 is an optical scanner capable of scanning transmissive documents, so there is a design of transparent glass 52 in the upper cover, so the design of the present invention can be implemented on the transparent glass 52 . For the method of its application, please refer to the description of the present invention implemented in the transparent carrier glass in the above-mentioned FIGS.

Please refer to FIG. 6D , which is a second preferred embodiment of a scale pattern designed on the upper cover of a scanner capable of scanning transmissive documents in the present invention. As shown in Figure 6D, a grid-like icon 49 is designed on the inner upper wall of the upper cover 50 of a scanner capable of scanning transmissive documents, and one of the light source devices 51 moves back and forth along the upper slide bar 53 , the design and application of the scale pattern is also as mentioned above.

Regardless of whether the scale patterns in the above-mentioned embodiments are scales with scales or simple scales or grid line icons, their purpose is to make a function of identification marks, so that the optical scanning device can be identified and calculated during the pre-scanning process. Measure the size of the image object, so the designer should not stick to the expression form of the scale pattern when considering the design, such as the shape of the scale, the size of the scale, the distance between the scales, whether the scale is a letter or number or a mark, The thickness of the lines, the distance between the lines, etc., as long as they meet the spirit and purpose of the present invention due to the setting of scales, marks or patterns, all can be utilized and implemented by the present invention.

Please refer to FIG. 7 , which is a first preferred embodiment of the flow chart of the steps of the present invention. In the steps shown in Figure 7, this method can complete the pre-scanning process of a side image object without setting the scale pattern, and is especially used in optical scanners, with the design of related software to achieve The process of pre-scanning. It includes the following steps:

a. prepare the scanner 60;

b. prepare to scan documents 61;

c. activate the scanner 62;

d. Start pre-scanning 63;

e. Under the fixed width in the Y-axis direction, the luminance value of the calculated scanned image data in the X-axis direction does not change 64;

f. Output image data 65 with the size and position in the X-axis direction fixed;

g. The scanned file has reached terminal 66;

h. The continuous luminance value of the image data obtained in the Y-axis direction does not change 67;

i. The pre-scan is stopped, and the motor stops rotating 68;

j. The motor reverses to bring the image capture device back to the initial position 69 .

Wherein steps a to d, can be designed to enter the activation mode, so the activation mode includes that the optical scanning device is activated and the image object is placed in the optical scanning device, and the optical scanning device can be activated. An image capture unit checks whether it is in an initial position and so on related initial settings.

Wherein step e refers to that during the process of scanning the image object, the second scanning direction (such as the X-axis direction of the plane coordinates) is calculated under the fixed first scanning direction (such as the Y-axis direction of the plane coordinates). ) changes in luminance performance. During the scanning process within the range of the scanned file image data, the luminance will vary due to the different image brightness. When scanning to the terminal of the scanned single point, it will be There is no image data so the brightness will not change any more. The first scanning direction also refers to the driving direction of the image capturing unit, and the second scanning direction also refers to the extending direction of the image capturing unit.

Wherein, the output image data mentioned in step f refers to processing the image data obtained during the scanning process, and displaying the image data through a display device so that the user can know the scanning result. Among them, under the fixed size and position in the X-axis direction, the image data scanned in the Y-axis scanning direction is continuously output.

Wherein, the description in step h means that during the scanning process of the image object, the entire width of the image object has been obtained in the continuous Y-axis direction. At this time, it also means that the scanned file has reached the terminal, and also refers to the The pre-scan is coming to an end.

Wherein, the description in step i means that the pre-scanning process ends, and the motor in a transmission device stops rotating.

Wherein step j refers to referring to moving the image capture unit back to the original initial position, which is to move the image capture device back to the original position through the transmission of the transmission device (the motor should be reversed at this time). The initial position, and then proceed to formally scan the image. Wherein, the total width of the image object can also be converted and calculated according to the moving displacement data generated by the transmission device during the pre-scanning process.

Please refer to FIG. 8 , which is a second preferred embodiment of the flow chart of steps of the present invention. In the steps shown in Figure 8, this method is to complete the pre-scanning process of a side image object by setting a scale pattern, and is especially suitable for an optical scanner. The optical scanning device uses a scale The pattern is designed so that the size of the image object is correlated on the scale pattern, and the relative luminance performance on the scale pattern is designed, so as to pre-scan the image object. It includes the following steps:

a. prepare the scanner 70;

b. Prepare to scan documents 71;

c. activate the scanner 72;

d. Start pre-scanning 73;

e. Under the fixed X-axis position and direction, calculate and compare the luminance performance 74 of the scanned image and the scale pattern;

f. Judging the file size and position in the X-axis direction 75;

g. Determine the file size and position 76 in the X-axis direction;

h. output image data, and continue to pre-scan 77;

i. When the Y-axis direction is fixed, the full width of the file is obtained (the continuous luminance value does not change) 78;

j. Determine the size of the image in the Y-axis direction 79;

k. The pre-scan is stopped, and the motor stops rotating for 80°;

1. The motor reverses to bring the image capture device back to the initial position 81 .

Wherein steps a to d, can be designed to enter the activation mode, so the activation mode includes that the optical scanning device is activated and the image object is placed in the optical scanning device, and the optical scanning device can be activated. An image capture unit checks whether it is in an initial position and so on related initial settings.

Wherein step e refers to the process of scanning the image object, under the condition that the scanning direction of the image capture unit is fixed, to calculate and compare the luminance changes of the image and the scale pattern, and the scanning of the image capture unit The direction refers to the X-axis direction of the plane coordinates. The scale pattern is designed so that the size of the image object is correlated on the scale pattern, and the luminance performance obtained during the scanning process of the image object is related to the pre-designed luminance performance on the scale pattern to compare whether they are the same.

Wherein, the steps f and g are to judge and determine the size and position of the scanned file in the X-axis direction during the scanning process.

Among them, combining the descriptions of steps h, i, and j, when the luminance no longer changes, the full width of the scanned document is obtained, which means that the image object has been obtained in the continuous Y-axis direction during the scanning process of the image object. The full width of the image object is about to end at this time.

In step k, the motor in a transmission unit in the optical scanning device stops the transmission for scanning the image object, which means that the pre-scanning process is over.

Wherein step 1 refers to moving the image capture unit back to the original initial position, is to move the image capture device back to the original initial position through the transmission of the transmission device (the motor should be reversed at this time), and can Then, the actual scanning operation of the image is performed.

To sum up, the present invention only performs pre-scanning on the range of the original image size and does not need to pre-scan the entire scanning window area like the traditional technology, so the present invention can shorten the entire pre-scanning time course, and does not require the user to pre-scan Estimating the size of the image does not require the user to manually select the image range to be captured. In fact, the present invention has already found the size of the actual image object during the pre-scanning process, and all of them are completed in the automatic processing mode of the computer. The whole process of image scanning (including pre-scanning).

Through the description of the above preferred embodiments, the method and device for automatically identifying the size of an image object disclosed in the present invention can be practically applied in the process of scanning an image object by an optical scanner. After the image object is scanned The size of the image object can be known immediately, and the pre-scanning process is completed at the same time, so that the scanning time can be shortened, and the image capture process can be automated.

In the description of the above-mentioned preferred embodiments, it should be considered that those who use scales, patterns, marks, images, lines, etc. to achieve the comparison of the size of the image object to be measured and calculate the luminance can be calculated. The actual size of the image to be tested should be covered by the spirit of the present invention. The production design of the pattern and the way of fixing it should also be foreseen by the present invention. For the manuscript to be tested, it is a text manuscript, or an image symbol, or a photo, etc. It is also included in the so-called one of the present invention. Among the imaging objects, those of the transmission type or the reflection type for the object to be measured are applicable to the present invention.

The above descriptions are only preferred embodiments of the present invention, and cannot be used to limit the implementation scope of the present invention. All equivalent changes and modifications made according to the teaching of the present invention should still fall within the scope covered by the patent of the present invention.

Claims (10)

1, a kind of method of distinguishing image thing size automatically is the process of an optical scanner to image thing prescan, comprises the following steps:

A. enter enable mode;

B. this image thing is scanned, and calculate the change of briliancy;

C. image output data;

Finish prescan when d. briliancy no longer changes.

2, the method for distinguishing image thing size automatically as claimed in claim 1, wherein said b step, be meant this image thing is being carried out in the scanning process, down fixing in first direction of scanning, calculate the variation of the second direction of scanning briliancy performance, wherein this first direction of scanning is meant the transmission direction of this image acquisition unit, and second direction of scanning is meant the direction of scanning of image acquisition unit.

3, the described method of distinguishing image thing size automatically of claim 1, wherein said c step is down fixing in second direction of scanning, with the image data output of first direction of scanning scanning gained.

4, a kind of method of distinguishing image thing size automatically comprises the following steps:

A., the scanner of one tool scale pattern is provided;

B. enter enable mode, implement prescan;

C. calculate the performance of this image thing of comparison and this scale pattern briliancy;

D. down fixing in first direction of scanning, the size of decision image thing;

E. image output data;

F. down fixing in second direction of scanning, the size of decision image thing;

When g. briliancy no longer changes, finish prescan.

5, the method for distinguishing image thing size automatically as claimed in claim 4, wherein said c step is meant this image thing is being carried out in the scanning process, the fixing variation of calculating briliancy down in the direction of scanning of this image acquisition unit.

6, the method for distinguishing image thing size automatically as claimed in claim 4, wherein said g step is meant in the scanning process to this image thing, when briliancy no longer includes variation, be meant that the prescan to this determinand finishes, and this gear unit stops the action to this image acquisition unit transmission.

7, the method for distinguishing image thing size automatically as claimed in claim 4, wherein said scale pattern are meant after this determinand is placed on position to be scanned can produce the sign that yardstick measures relatively.

8, a kind of device of distinguishing image thing size automatically comprises:

One optical scanner;

One scale pattern, the design in this optical scanner, wherein this scale pattern with

One image to be measured is to produce relative position quantitative relation person;

The one scan means, be that this optical scanner imposes scanning to this image to be measured, and, in scanning process, calculate the relation of this image brightness to be measured and this default value by the default value of this scale pattern, after the size of learning this image thing to be measured, and the process of end scanning.

9, the device of distinguishing image thing size automatically as claimed in claim 8, wherein said scale pattern are graduated scale marks.

10, the device of distinguishing image thing size automatically as claimed in claim 8, wherein said scale pattern are clathrate icons.

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