CN100420260C - Image joining method - Google Patents

Abstract

An image joining method is mainly used in the scanning process of an image scanner scanning the image information of a document to be scanned and transmitting it to a terminal. When there is too much image information temporarily stored in the data register of the image scanner, the linear photosensitive component of the image scanner stops scanning. At this time, the image of the coding strip on the image scanner is captured at the same time, so that the image register has enough time to process the image information in its space. After that, the linear photosensitive component continues to scan the document to be scanned, and the image of the coding strip is captured within a certain capture time. The images of the coding strip captured before and after are compared to obtain an image joining point, and the image information of the document to be scanned scanned before and after is joined accordingly, and the image information of the document to be scanned is continued to be scanned until the scanning is completed, so that the scanned image information will not overlap or be disconnected.

Description

image stitching method

technical field

The present invention relates to an image joining method, which is applied to the scanning process in which an image scanner scans the image information of a file to be scanned and transmits it to a terminal, and there is too much image information temporarily stored in the data register of the image scanner In particular, it is an image splicing method that can avoid overlapping or disconnection of the image information of the document to be scanned obtained by scanning.

Background technique

Generally speaking, when the image scanner 10 scans an image, it needs to shine a strong light on the document to be scanned (not shown in the figure), please refer to the architecture diagram of the prior art shown in "Fig. After the component 101 scans the light with the image information of the document to be scanned, the image information is transmitted to the image processing unit 102 in the form of an analog image signal, and then the image processing unit 102 converts the image signal into a digital form and stores it in the data Register 103, and after the data transmission interface 104 reaches an agreement with the terminal 105, the data transmission interface 104 will obtain the image signal from the data register 103 and transmit it to the terminal 105 according to this agreement, so that the image information of the document to be scanned can be obtained , and displayed on the terminal 105.

Of course, when the speed at which the image signal is transmitted from the image processing unit 102 to the data register 103 is higher than the speed at which the image signal is transmitted from the data register 103 to the terminal 105, the image signal will gradually accumulate in the image register 103, and the image register 103 tends to in saturation. Once the image signal accumulates to a certain critical point, the image processing unit 102 will issue a command to request the motor M1 to stop, so that the linear photosensitive component 101 stops transmitting the image information just scanned. At this time, the motor M1 will decelerate from the scanning speed to stop driving the linear photosensitive element 101 and obtain enough time for the image signal in the image register 103 to be processed. Afterwards, the motor M1 again drives the linear photosensitive assembly 101 to accelerate to continue scanning at the scanning speed. Finally, the image information obtained from each scan is combined.

Because the motor M1 needs to have a certain acceleration distance to reach the required scanning speed when it is started again after the stop action, so the linear photosensitive assembly 101 must retreat to obtain the acceleration distance, so as to reach the speed due to the previous data. The required scanning speed is reached before the position where the register 103 stops due to insufficient space. And when the linear photosensitive component 101 scans the document to be scanned again, it needs to be correctly connected to the previously scanned stop position, so that the image information of the scanned document to be scanned can be relatively complete and continuous.

However, when the motor M1 and the transmission assembly (not shown in the figure) are in mutual transmission, there will often be a mechanical transmission error caused by the gear gap. In this way, the image information of the document to be scanned obtained by scanning before and after the motor M1 stops is also easy. There is overlap or disconnection.

Based on the above, another scanning method was developed in the later stage, which is to scan and store the motor together during the process of retreating, and then compare the image information obtained before the motor stops and when it is retreating to obtain the most consistent point. And as image junctions.

However, because this technology compares the image information of the document to be scanned when comparing the image information, if the image information of the document to be scanned has extremely high repeatability, it is easy to generate stitching errors.

Contents of the invention

In view of the above problems, the main purpose of the present invention is to provide an image splicing method, so as to avoid overlapping or disconnection of scanned image information of documents to be scanned.

Therefore, in order to achieve the above purpose, the image splicing method disclosed in the present invention is applied to an image scanner to scan the image information of the document to be scanned and transmit it to the scanning process of the terminal. This method includes the following steps:

When the space of the image scanner is not enough to store the image information, the photosensitive element decelerates from the scanning speed to stop scanning, and captures the image of the code bar at the stop position. Afterwards, the photosensitive assembly is retreated by a reverse distance, and the reverse distance is greater than the required acceleration distance of the photosensitive assembly. And when the space of the image scanner is emptied, the photosensitive component is accelerated to the scanning speed, and the image information is scanned and the image of the coding strip is captured within a period of capture time. Then, an image scanner is used to compare the images of the coding strips captured for the previous and subsequent times, so as to obtain image junctions. Then according to the image joining point, join the image information of previous and previous scans, and continue to scan the image information of the document to be scanned until the scanning is completed.

Therefore, the present invention can continue to scan the image information of the document to be scanned by using the code strip captured by the matrix photosensitive element, and the image information of the document to be scanned will not be overlapped or disconnected.

Regarding the features and implementation of the present invention, the preferred embodiments are described in detail below in conjunction with the drawings. (In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the detailed description of the embodiments is as follows.)

Description of drawings

Fig. 1 is the architecture diagram of prior art;

Fig. 2 is the architecture diagram for applying the specific embodiment of the present invention;

Fig. 3 is a flowchart of a specific embodiment of the present invention; and

Fig. 4 is a schematic diagram of a coding strip and a document to be scanned according to a specific embodiment of the present invention.

Description of reference symbols

Image Scanner 10

Linear photosensitive components 101

Image processing unit 102

Data Register 103

Data transmission interface 104

Terminal 105

Motor M1, M2

Image Scanner 20

Photosensitive component 201

Linear photosensitive components 2011

Matrix sensor 2012

Image processing unit 202

Data register 203

Data transmission interface 204

Terminal 205

Coding strip 30

Documents to be scanned 40

Step 101 When the space of the image scanner is not enough to store the image information, the photosensitive element decelerates from the scanning speed to stop scanning, and captures the image of the code bar at this stop position

In step 102, the photosensitive assembly is retreated by a reverse distance, and the reverse distance is greater than the required acceleration distance of the photosensitive assembly

Step 103: When the space of the image scanner is emptied, the photosensitive element is accelerated to the scanning speed, and the image information is scanned and the image of the coding strip is captured within a period of capture time

In step 104, an image scanner compares the images of the coded strips captured last time to obtain the joint points of the images

Step 105 joins the image information of the preceding and subsequent scans according to the joining points of the images, and continues to scan the image information of the document to be scanned until the scanning is completed.

Detailed ways

The image splicing method disclosed in the present invention is applied to the image information of the document 40 to be scanned (see FIG. 4 ) scanned by the image scanner 20 and transmitted to the scanning process of the terminal 205 for implementation. The device of this method includes a photosensitive component 201, an image processing unit 202, a data register 203, and a data transmission interface 204. Please refer to the architecture diagram of a specific embodiment of the present invention shown in FIG. 2 . The photosensitive component 201 includes a linear photosensitive component 2011 and a matrix photosensitive component 2012, wherein the linear photosensitive component 2011 is used to scan the image information of the document 40 to be scanned to obtain the image information of the document 40 to be scanned, and the matrix photosensitive component 2012 is used for The image of the coding strip 30 on the image scanner 10 is scanned to obtain the scanned position of the document 40 to be scanned. The action of the linear photosensitive element 2011 and the matrix photosensitive element 2012 is driven by the motor M2.

The image processing unit 202 can receive the image signal in analog form transmitted by the linear photosensitive component 2011, and the coded image signal transmitted by the matrix photosensitive component 2012, and convert these signals into digital form, and then transmit them to the data register 203. The data transmission interface 204 transmits to the terminal 205 .

As for the too much image information temporarily stored in the data register 203, when the space is insufficient, the linear photosensitive assembly 2011 is stopped to scan, and at this moment, the image of the coding bar 30 on the image scanner 10 is captured together, and the photosensitive assembly retreats. The inversion distance is greater than the acceleration distance required by the photosensitive component, so the image register 203 has enough time to process the image information in its space. Afterwards, the linear photosensitive component 2011 continues to scan the document 40 to be scanned, and at the same time captures the image of the coding strip 30 within a certain capture time. Then, compare the images of the code strip 30 captured in the previous and subsequent times to obtain the image joining point, and according to the image joining point, join the image information of the document 40 to be scanned in the previous and subsequent scans, and continue to scan the image of the document 40 to be scanned information until the scan is complete.

Of course, when the space of the data register 203 is insufficient, the above process can be used again.

Therefore, the architecture diagram of the application of the specific embodiment of the present invention as shown in "Fig. 2", the flow chart of the specific embodiment of the present invention as shown in "Fig. 3", and the specific implementation of the present invention as shown in "Fig. 4" Example code strips and schematic diagrams of documents to be scanned. The image splicing method described in the present invention mainly includes the following steps:

Step 101 is to decelerate the scanning speed of the photosensitive element to stop scanning when the space of the image scanner is not enough to store the image information again, and capture the image of the coding bar at the stop position.

In this step 101, the image processing unit detects the space of the data register to know that the space is insufficient, and the image processing unit requires the motor of the image scanner to stop driving the photosensitive element to stop scanning, and the image processing unit also starts the matrix photosensitive element to capture Take an image of the coded bar at the stop position.

Step 102 is to make the photosensitive assembly retreat by a reverse distance, and the reverse distance is greater than the required acceleration distance of the photosensitive assembly.

In step 102, the motor drives the photosensitive assembly.

Step 103 is that when the space of the image scanner is emptied, the photosensitive element accelerates to the scanning speed, scans the image information and captures the image of the coding strip within a certain capture time.

In this step 103, the image processing unit detects that the image information is cleared in the space of the data register, so the image processing unit makes the motor drive the photosensitive component to accelerate to the scanning speed, and the image information is scanned by the linear photosensitive component, and captured by the matrix photosensitive component. Take an image of the encoded strip.

Step 104 is to compare the images of the coding strips captured last time by the image scanner to obtain image joint points.

In step 104, the comparison is performed by the image processing unit.

Step 105 is to join the image information of the preceding and subsequent scans according to the joining points of the images, and continue to scan the image information of the document to be scanned until the scanning is completed.

Therefore, the present invention can continue to scan the image information of the document 40 to be scanned by using the code strip 30 captured by the matrix photosensitive element 2012 . In this way, as disclosed in the prior art, when the motor M1 and the transmission assembly (not shown in the figure) are in mutual transmission, the mechanical transmission error caused by the gear gap is often avoided, so that the image information of the document to be scanned will not be duplicated. overlap or disconnection, and get rid of a similar situation caused by another prior art.

Although the present invention is disclosed above with the aforementioned preferred embodiments, it is not intended to limit the present invention. Any person familiar with the similar art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The scope of patent protection of the present invention must be defined by the scope of patent application attached to this specification.

Claims (8)

1. An image splicing method, applied to an image scanner to scan an image information of a file to be scanned, and deliver it to a scanning process of a terminal, the method includes: When the space of the image scanner is insufficient to store the image information again, a photosensitive element of the image scanner decelerates from a scanning speed to stop scanning, and captures an image of an encoding bar at the stop position; Retreating the photosensitive unit by a reversal distance, and the reversal distance is greater than an acceleration distance required for the photosensitive unit to accelerate to the scanning speed; When the space of the image scanner is emptied, the photosensitive element accelerates up to the scanning speed to scan the image information, and captures the image of the coding strip within a certain capture time; comparing the images of the coding strip captured by the image scanner for the previous and subsequent times to obtain an image joint point; and According to the image joint point, the image information of the preceding and subsequent scans is joined, and the image information of the document to be scanned is continuously scanned until the scanning is completed. 2. The image splicing method as claimed in claim 1, wherein the space of the image scanner is not enough to store the image information again by detecting a data register of the image scanner by an image processing unit of the image scanner learned from space. 3. The image joining method as claimed in claim 1, wherein, when the space of the image scanner is not enough to store the image information again, a photosensitive element of the image scanner decelerates from a scanning speed to stop scanning, and captures In the step of taking an image of a coded bar at the stop position, an image processing unit of the image scanner requires a motor of the image scanner to stop driving the photosensitive assembly, so as to stop scanning. 4. The image joining method as claimed in claim 1, wherein, when the space of the image scanner is not enough to store the image information again, a photosensitive element of the image scanner decelerates from a scanning speed to stop scanning, and captures In the step of taking an image of a coding strip at a stop position, an image processing unit of the image scanner activates a matrix photosensitive element of the photosensitive element to capture the image of the coding strip at the stop position. 5. The image joining method as claimed in claim 1, wherein, in the step of making the photosensitive assembly back a reversal distance, and the reversal distance is greater than the acceleration distance required for the photosensitive assembly to accelerate to the scanning speed, is A motor of the image scanner drives the photosensitive unit to retreat by the inversion distance. 6. The image splicing method as claimed in claim 1, wherein, when the space of the image scanner is emptied, the photosensitive element is accelerated up to the scanning speed to scan the image information, and within a period of capture time, capture In the step of encoding the image of the bar, an image processing unit of the image scanner detects that the image information is cleared in a data register space of the image scanner, and the image processing unit makes the image scanner A motor drives the photosensitive assembly to accelerate up to the scanning speed. 7. The image splicing method as claimed in claim 1, wherein, when the space of the image scanner is emptied, the photosensitive element is accelerated up to the scanning speed to scan the image information, and within a period of capture time, capture In the step of forming the image of the coding strip, the image information is scanned by the linear photosensitive element of the photosensitive element, and the image of the coding strip is captured by a matrix photosensitive element of the photosensitive element. 8. The image joining method as claimed in claim 1, wherein, in the step of obtaining an image joining point by comparing the images of the encoding strip captured by the image scanner before and after, the image joining point is formed by the An image processing unit of the image scanner compares the images of the encoding strip captured last time.

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