CN107580158B - Image color edge minimizing technology and device - Google Patents
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- CN107580158B CN107580158B CN201710967221.XA CN201710967221A CN107580158B CN 107580158 B CN107580158 B CN 107580158B CN 201710967221 A CN201710967221 A CN 201710967221A CN 107580158 B CN107580158 B CN 107580158B
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Abstract
The present invention provides a kind of image color edge minimizing technology and device, is obtained by scanning test image；Base colors are determined in test image, using the scan line where base colors as benchmark line；According to reference line, the displacement between non-referenced color and base colors is determined；According to determining displacement, adjustment of displacement is carried out to the scan line of non-referenced color, so that the base colors after adjustment of displacement overlap each other with the scan line where non-referenced color, obtains the scan image of removal colour edging.To realize accurately identifying and correcting to the color disorder of colour edging, achievees the effect that scan text or line edge are clear, really restores former scanning manuscript.
Description
Technical field
The present invention relates to definition technique more particularly to a kind of image color edge minimizing technologies and device.
Background technique
Contact-sensing device CIS (Contact Image Sensor, referred to as " CIS ") is a kind of electrooptical device,
It is by the integration module of the one-piece structure of light-source system and photosensitive system, using built-in LED LED lighting, directly
Contact carries out optical scanner on original copy surface, to original copy, reads image data.
Fig. 1 show the setting schematic diagram of the CIS in existing image-scanning device, and CIS is usually in controller to one
After enabling signal, scanning motor starting CIS starts to right shown in FIG. 1 movement, to obtain the image data on original text platform.
In scanning-mode it, CIS carries out scanning line by line to document, scanning direction as shown in Fig. 2, on document from left to right, from
The pixel value of R (red) G (green) B (indigo plant) three kinds of colors of the acquisition image data under.
But motor, during starting line by line drives CIS mobile, controller also starts simultaneously at recording image data,
However, the lighting operation time of the R/G/B diode illumination in CIS is difficult to synchronize, R/G/B scanning is caused to record R/ with controller
It is difficult to synchronize at the time of G/B data, always there is delay, apparent colored side occur in the text or lines for causing scanning to obtain
Edge causes colour edging phenomenon as shown in Figure 3, wherein the part A in Fig. 3 shows the scanning effect there are colour edging
Scheme, the part B in Fig. 3 shows the clearly scanning effect picture there is no colour edging.
Summary of the invention
The present invention provides a kind of image color edge minimizing technology and device, to solve the figure scanned in the prior art
There is technical issues that as in.
One aspect of the invention provides a kind of image color edge minimizing technology, comprising:
Scanning obtains test image；
Base colors are determined in the test image, using the scan line where the base colors as benchmark line；
According to the reference line, the displacement between non-referenced color and the base colors is determined；
According to determining displacement, adjustment of displacement is carried out to the scan line of the non-referenced color, so that the displacement is adjusted
Base colors after whole overlap each other with the scan line where non-referenced color, obtain the scan image of removal colour edging.
Optionally, the base colors be three kinds of colors of red, green, blue in any one or it is two kinds any；It is described
In the test image before determining base colors, further includes:
Red, green, blue color separated is carried out to the test image, respectively obtains the red scanning for constituting the test image
First separate picture of line, constitute the test image green scan line the second separate picture and constitute the test image
Blue scan line third separate picture；
It is described to determine that base colors include: in the test image
According to first separate picture, second separate picture and the third separate picture, red, green, blue is determined
Whether there is offset each other between three kinds of colors, if so, arbitrarily select a kind of color as base colors, then other two kinds
Color is non-referenced color；If there are the overlappings of two kinds of colors between three kinds of colors of red, green, blue, with two kinds of colors of overlapping
As base colors, then a kind of other colors are non-referenced color, or using the color of non-overlap as base colors, then other
Two kinds of colors of overlapping are as non-referenced color.
Optionally, the scan line using where the base colors is benchmark line, comprising:
A target scanning lines are selected in the separate picture comprising the reference line, using the target scanning lines as institute
State reference line, wherein include object content in the target scanning lines.
Optionally, described that displacement between non-referenced color and the base colors is determined according to the reference line, packet
It includes:
The purpose scan line where the object content is determined in the separate picture comprising the non-referenced color, is determined
Displacement between the purpose scan line and the reference line.
Optionally, the scanning acquisition test image includes:
The image that a width includes muted color text or muted color lines is scanned, the test image is obtained.
Another aspect of the invention provides a kind of image color edge removal device, comprising:
Scan module obtains test image for scanning；
Displacement detection module, for determining base colors in the test image, where the base colors
Scan line is benchmark line；According to the reference line, the displacement between non-referenced color and the base colors is determined；
Module is adjusted, for carrying out adjustment of displacement to the scan line of the non-referenced color according to determining displacement, with
Base colors after making the adjustment of displacement overlap each other with the scan line where non-referenced color, obtain removal colour edging
Scan image.
Optionally, the base colors be three kinds of colors of red, green, blue in any one or it is two kinds any；Institute's rheme
Shifting amount detection module includes:
Submodule is separated, for carrying out red, green, blue color separated to the test image, respectively obtains and constitutes the survey
Attempt the first separate picture of the red scan line of picture, the green scan line for constituting the test image the second separate picture and
Constitute the third separate picture of the blue scan line of the test image；
It determines submodule, schemes for being separated according to first separate picture, second separate picture and the third
Picture determines between three kinds of colors of red, green, blue there is offset whether each other, if so, arbitrarily selecting a kind of color as benchmark
Color, then other two kinds of colors are non-referenced color；If there are the overlapping of two kinds of colors between three kinds of colors of red, green, blue, with
Two kinds of colors of overlapping are as base colors, then a kind of other colors are non-referenced color, or using the color of non-overlap as
Base colors, then two kinds of colors of other overlappings are as non-referenced color.
Optionally, the displacement detection module, further includes:
Submodule is selected, for selecting a target scanning lines in the separate picture comprising the reference line, with described
Target scanning lines are as the reference line, wherein include object content in the target scanning lines.
Optionally, the determining submodule is also used in the separate picture comprising the non-referenced color described in determination
Purpose scan line where object content determines the displacement between the purpose scan line and the reference line.
Optionally, the scan module includes muted color text or muted color lines specifically for one width of scanning
Image obtains the test image.
As shown from the above technical solution, image color edge provided by the invention minimizing technology and device are obtained by scanning
Take test image；Base colors are determined in test image, using the scan line where base colors as benchmark line；According to benchmark
Line determines the displacement between non-referenced color and base colors；According to determining displacement, to the scan line of non-referenced color
Adjustment of displacement is carried out to be gone so that the base colors after adjustment of displacement overlap each other with the scan line where non-referenced color
Except the scan image of colour edging.To realize accurately identifying and correcting to the color disorder of colour edging, reach scanning text
The effect of word or clear, the true former scanning manuscript of reduction of line edge.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic diagram of existing image-scanning device；
Fig. 2 is scanning direction schematic diagram；
Fig. 3 is the scanning effect picture there are colour edging；
Fig. 4 is the flow chart of the image color edge minimizing technology shown in an exemplary embodiment of the invention；
Fig. 5 is the flow chart of the image color edge minimizing technology shown in another exemplary embodiment of the present invention；
Fig. 6 a is datagram before the RGB triple channel of embodiment illustrated in fig. 5 is displaced；
Fig. 6 b is the R channel data schematic diagram of embodiment illustrated in fig. 5；
Fig. 6 c is the G channel data schematic diagram of embodiment illustrated in fig. 5；
Fig. 6 d is the channel B schematic diagram data of embodiment illustrated in fig. 5；
Fig. 6 e is datagram after the RGB triple channel of embodiment illustrated in fig. 5 is displaced；
Fig. 7 is the structural schematic diagram of the image color edge removal device shown in an exemplary embodiment of the invention；
Fig. 8 is the structural schematic diagram of the image color edge removal device shown in another exemplary embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 4 is the flow chart of the image color edge minimizing technology shown in an exemplary embodiment of the invention, such as Fig. 4 institute
Show, the present embodiment provides a kind of image color edge minimizing technologies, comprising:
Step 401, scanning obtain test image.
In this step, operation is scanned to any document using image forming apparatus, wherein the application of the present embodiment
Scene includes but is not limited to scanner, printer, duplicator, facsimile machine, all-in-one multifunctional machine etc., only with band in following embodiment
There is the scanning means of CIS to be illustrated.There are problems that colour edging for the scan image proposed in background technique, leads to
For often, a kind of solution being readily apparent that exactly is solved the above problems by solving the accuracy of motor drive signal,
But implement relatively difficult, but also difference can occur with every scanning means assembling process, there are also be exactly even if right
The scanning means being completed has carried out the accuracy adjustment of motor drive signal, carries out it between controller tracer signal
It is synchronous, but with the use of motor, the aging of equipment, it is asked it is also possible that occurring colour edging that is asynchronous and being formed again
Topic, therefore, the present embodiment are exactly to be balanced out by a kind of simply and easily mode only by pre-processing to scan data
It is asynchronous between motor drive signal and image data, realize the colour edging of removal scan image.It is above-mentioned to realize
It is synchronous, it is necessary first to determine asynchronous measures of dispersion, then be scanned first by carrying out prescan to a test image
Test image afterwards.It is accurate and quick in order to be carried out to colour edging due to that can have colour edging in test image
Identification, test image generally can wrap text or lines containing pure color, for example, the text of white background black mole.Simultaneously as image
Data are usually all to be scanned by tri- color of RGB and formed, and therefore, are misplaced and shape between tri- color of R, G, B in order to clearly pick out
At colour edging, test image do not use as far as possible pure red, pure green or pure blue text or lines constitute.
Step 402 determines base colors in test image, using the scan line where base colors as benchmark line.
In this step, the colour edging in the presence of the test image after scanning, can be by naked eyes or software to this
The color offset amount of colour edging is identified, specifically, there are colour edgings if observation obtains in test image, is illustrated
The lighting operation time of R/G/B diode illumination in CIS is there are asynchronous, at this point it is possible to select a line in test image
Scanning line, a kind of color or multiple color for constituting the horizontal scanning line item are exactly base colors, using the horizontal scanning line item as
Reference line.
Step 403, according to reference line, determine the displacement between non-referenced color and base colors.
In this step, the color for constituting reference line is benchmark color, then the color for not including in reference line is with regard to right and wrong
Base colors determine the displacement between the reference line where the lines and base colors where non-referenced color, the displacement
Minimum unit be a scanning line spacing.
Step 404 adjusts the scan line progress adjustment of displacement of non-referenced color so as to be displaced according to determining displacement
Base colors after whole overlap each other with the scan line where non-referenced color, obtain the scan image of removal colour edging.
In this step, according to determining displacement, adjustment of displacement is carried out to the scan line of non-referenced color, so that CIS
In R/G/B diode illumination lighting operation time it is synchronous, that is to say, that all include in every scan line after adjustment of displacement
The overlay informations of base colors and non-referenced color, form as shown in part B in Fig. 3 clearly, eliminate colored side
The scan image of edge.
Image color edge provided in this embodiment minimizing technology, is obtained by scanning test image；In test image
Base colors are determined, using the scan line where base colors as benchmark line；According to reference line, non-referenced color and benchmark face are determined
Displacement between color；According to determining displacement, adjustment of displacement is carried out to the scan line of non-referenced color, so that adjustment of displacement
Base colors afterwards overlap each other with the scan line where non-referenced color, obtain the scan image of removal colour edging.To
It realizes accurately identifying and correcting to the color disorder of colour edging, reaches scan text or line edge and clearly, really restore
The effect of original scanning manuscript.
Fig. 5 is the flow chart of the image color edge minimizing technology shown in another exemplary embodiment of the present invention, such as Fig. 5 institute
Show, based on the above embodiment, the present embodiment provides a kind of image color edge minimizing technologies, comprising:
Step 501, scanning obtain test image.
In this step, test image can be a width and contain the image of muted color text or muted color lines, lead to
The image that the width includes muted color text or muted color lines is over-scanned, obtains test image, wherein muted color is also known as
Netrual colour system refers to and is not belonging to cool tone by black, white and the grey color system different by the various depths of black and white reconciliation, muted color
Also it is not belonging to warm tones.Black-white-gray is commonly used three big muted colors.Compared to muted color, colour edging is due in CIS
The asynchronous formation of lighting operation time of R/G/B diode illumination, therefore, when nonsynchronous red or green or blue
When being imaged in the test image being made of muted color, identification is higher, improves the subsequent position to the dislocation of R/G/B each interchannel
The accurate judgement of shifting amount.
Step 502, base colors be three kinds of colors of red, green, blue in any one or it is two kinds any；To test image
Red, green, blue color separated is carried out, the first separate picture of the red scan line for constituting test image is respectively obtained, constitutes test
Second separate picture of the green scan line of image and the blue scan line third separate picture for constituting test image.
In this step, for the imaging device being made of R/G/B triple channel, all colors are all by the three primary colors
It is formed, therefore, base colors can be to be made of one or both of R/G/B.No matter base colors are by one in R/G/B
Kind or two kinds of compositions, all illustrating it, there are the asynchronous problems of tri- color of R/G/B, therefore, can be by carrying out to test image
The color separated of R/G/B triple channel, clearly to identify the displacement of three kinds of color misalignments.As shown in Fig. 6 a~Fig. 6 d, wherein
Fig. 6 a is the test image that the preceding scanning of displacement processing is got；Fig. 6 b~Fig. 6 d is respectively tri- channels R/G/B before displacement processing
Respective color-separated figure, i.e. 6b are the first separate picture for constituting the red scan line of test image, and 6c is to constitute test chart
Second separate picture of the green scan line of picture, 6d are the third separate picture for constituting the blue scan line of test image.
Step 503, according to the first separate picture, the second separate picture and third separate picture, determine three kinds of red, green, blue
Whether there is offset each other between color；If so, arbitrarily select a kind of color as base colors, then other two kinds of colors
For non-referenced color；If there are the overlapping of two kinds of colors between three kinds of colors of red, green, blue, using two kinds of colors of overlapping as
Base colors, then a kind of other colors are non-referenced color or using the color of non-overlap as base colors, then other overlappings
Two kinds of colors as non-referenced color.
In this step, refer to R/G/B triple channel each other in the presence of offset each other between three kinds of colors of so-called red, green, blue
Between do not have it is both any be it is synchronous, under such scene, can arbitrarily select a kind of color as base in R/G/B triple channel
Scan line where the base colors is preset as reference line by quasi- color, in such a scenario, other two kinds of colors be required to
This reference line is reference, and mobile corresponding displacement realizes that the synchronization of R/G/B triple channel then in this case needs two kinds of colors
Mobile realization R/G/B triple channel synchronization；It is that there are the synchronizations of two kinds of colors in triple channel there are also a kind of situation, then it can be with
To synchronize scan line of overlap two kinds of colors as base colors, where the base colors which is formed
It is preset as reference line, at this time, it is only necessary to which the color for not synchronizing another kind is using this reference line as reference, mobile corresponding position
It moves, realizes that the synchronization of R/G/B triple channel then in this case needs a kind of the same of the mobile realization R/G/B triple channel of color
Step, or can also be using the color of non-overlap as base colors, then other two kinds of colors being overlapped are as non-referenced color, this
In the case of kind, while it is desirable to the movement of two kinds of colors, but two kinds of colors to overlap are synchronous relative to base colors
Move identical displacement.That is, presetting three kinds of offset sides to the scene of the imaging of R/G/B triple channel in this present embodiment
Formula, one is colors a kind of in R/G/B to need to move, and another kind is the lines synchronizing moving of two kinds of overlapping colors in R/G/B, then
One is the lines of two kinds of colors in RG/RB/GB to need to move.
Step 504 selects a target scanning lines in the separate picture comprising reference line, using target scanning lines as base
Directrix, wherein include object content in target scanning lines.
Step 505, the purpose scan line in the separate picture comprising non-referenced color where determining object content, determine
Displacement between purpose scan line and reference line.
Specifically, it is found that reference line is the scan line formed by base colors from step 503, but such as Fig. 6 b~figure
All there are several reference lines shown in 6d, in every separate picture, if reference line is misplaced in displacement determination process,
The image data obtained after displacement is still incorrect, therefore, can be by selecting an object content (example in test image
Such as, the wave in Fig. 6 b~Fig. 6 d, the wave are only to illustrate, and those skilled in the art can according to need sets itself should
Object content), using include the object content scan line as target scanning lines, i.e., using the target scanning lines as benchmark
Line, thus the purpose scan line where determining object content in other separate pictures for including non-referenced color, then determine
Displacement between the purpose scan line and reference line out.For example with the separate picture of Fig. 6 b~Fig. 6 d, by observing mesh
Mark content (wave) is located at the 6th row in Fig. 6 b, the 4th row in Fig. 6 c, the 7th row in Fig. 6 d, then it is known that R/
G/B triple channel does not synchronize, at this point it is possible to using the color in any one channel in Fig. 6 b~Fig. 6 d as base colors,
Assuming that then the target scanning lines where object content (the 6th row) are benchmark line using red channel as base colors；In the target
The purpose scan line held in fig. 6 c is the 4th row, it is determined that purpose scan line is+2 or -2 (its relative to the displacement of reference line
In "+", "-" be used for move up or move down carry out directionality mark), the purpose scan line of the object content in fig. 6d is
7th row, it is determined that purpose scan line is+1 or -1 relative to the displacement of reference line；To move up as "+", move down as "-", then it is green
Chrominance channel needs to move down two rows, and blue channel needs to move up a line, obtains the synchronization of R/G/B triple channel.
Step 506 adjusts the scan line progress adjustment of displacement of non-referenced color so as to be displaced according to determining displacement
Base colors after whole overlap each other with the scan line where non-referenced color, obtain the scan image of removal colour edging.
In this step, Fig. 6 e is the scan image image carried out after adjustment of displacement according to step 505, it is seen that at displacement
R/G/B triple channel is synchronous after reason, eliminates colour edging.
Fig. 7 is the image color edge removal device schematic diagram shown in an exemplary embodiment of the invention, as shown in fig. 7,
The image color edge removal device, comprising:
Scan module 1 obtains test image for scanning；
Displacement detection module 2 is used to determine base colors in test image, is with the scan line where base colors
Reference line；According to reference line, the displacement between non-referenced color and base colors is determined；
Module 3 is adjusted, for carrying out adjustment of displacement to the scan line of non-referenced color according to determining displacement, so that
Base colors after adjustment of displacement overlap each other with the scan line where non-referenced color, obtain the scanning figure of removal colour edging
Picture.
The realization principle of the embodiment is similar to the realization principle of embodiment of the method shown in above-mentioned Fig. 4, and details are not described herein.
Image color edge provided in this embodiment removal device, is obtained by scanning test image；In test image
Base colors are determined, using the scan line where base colors as benchmark line；According to reference line, non-referenced color and benchmark face are determined
Displacement between color；According to determining displacement, adjustment of displacement is carried out to the scan line of non-referenced color, so that adjustment of displacement
Base colors afterwards overlap each other with the scan line where non-referenced color, obtain the scan image of removal colour edging.To
It realizes accurately identifying and correcting to the color disorder of colour edging, reaches scan text or line edge and clearly, really restore
The effect of original scanning manuscript.
Fig. 8 is the image color edge removal device schematic diagram shown in another exemplary embodiment of the present invention, such as Fig. 8 institute
Show, on the basis of the above embodiments,
Optionally, base colors be three kinds of colors of red, green, blue in any one or it is two kinds any；
Displacement detection module 2 includes:
Submodule 21 is separated, for carrying out red, green, blue color separated to test image, respectively obtains composition test image
Red scan line the first separate picture, constitute test image green scan line the second separate picture and constitute test chart
The third separate picture of the blue scan line of picture；
Determine submodule 22, for according to the first separate picture, the second separate picture and third separate picture, determine it is red,
Whether there is offset each other between green, blue three-color, if so, arbitrarily select a kind of color as base colors, then its
His two kinds of colors are non-referenced color；If between three kinds of colors of red, green, blue, there are the overlappings of two kinds of colors, with the two of overlapping
Kind of color is as base colors, then a kind of other colors are non-referenced color, or using the color of non-overlap as base colors,
Then two kinds of colors of other overlappings are as non-referenced color.
Optionally, displacement detection module 2, further includes:
Submodule 23 is selected, for selecting a target scanning lines in the separate picture comprising reference line, is swept with target
Line is retouched as reference line, wherein include object content in target scanning lines.
Optionally, it determines submodule 22, is also used to determine object content institute in the separate picture comprising non-referenced color
Purpose scan line, determine the displacement between purpose scan line and reference line.
Optionally, scan module 1 includes the figure of muted color text or muted color lines specifically for one width of scanning
Picture obtains test image.
The realization principle of the embodiment is similar to the realization principle of embodiment of the method shown in above-mentioned Fig. 5, and details are not described herein.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of image color edge minimizing technology characterized by comprising
Scanning obtains test image；
Red, green, blue color separated is carried out to the test image, respectively obtains the red scan line for constituting the test image
First separate picture, constitute the test image green scan line the second separate picture and constitute the indigo plant of the test image
The third separate picture of color scan line；
Base colors are determined in the test image, using the scan line where the base colors as benchmark line, wherein described
Base colors be three kinds of colors of red, green, blue in any one or it is two kinds any；
According to the reference line, the displacement between non-referenced color and the base colors is determined；
According to determining displacement, adjustment of displacement is carried out to the scan line of the non-referenced color, so that after the adjustment of displacement
Base colors overlap each other with the scan line where non-referenced color, obtain removal colour edging scan image.
2. the method according to claim 1, wherein
It is described to determine that base colors include: in the test image
According to first separate picture, second separate picture and the third separate picture, three kinds of red, green, blue are determined
Whether there is offset each other between color, if so, arbitrarily select a kind of color as base colors, then other two kinds of colors
For non-referenced color；If there are the overlapping of two kinds of colors between three kinds of colors of red, green, blue, using two kinds of colors of overlapping as
Base colors, then a kind of other colors are non-referenced color, alternatively, then other are heavy using the color of non-overlap as base colors
Two kinds of folded colors are as non-referenced color.
3. according to the method described in claim 2, it is characterized in that, on the basis of the scan line by where the base colors
Line, comprising:
A target scanning lines are selected in the separate picture comprising the reference line, using the target scanning lines as the base
Directrix, wherein include object content in the target scanning lines.
4. according to the method described in claim 3, it is characterized in that, described according to the reference line, determine non-referenced color with
Displacement between the base colors, comprising:
The purpose scan line where the object content is determined in the separate picture comprising the non-referenced color, determine described in
Displacement between purpose scan line and the reference line.
5. method according to any one of claims 1 to 4, which is characterized in that the scanning obtains test image and includes:
The image that a width includes muted color text or muted color lines is scanned, the test image is obtained.
6. a kind of image color edge removal device characterized by comprising
Scan module obtains test image for scanning；Displacement detection module, for determining benchmark in the test image
Color, using the scan line where the base colors as benchmark line；According to the reference line, non-referenced color and the base are determined
Displacement between quasi- color；The displacement detection module includes:
Submodule is separated, for carrying out red, green, blue color separated to the test image, respectively obtains and constitutes the test chart
First separate picture of the red scan line of picture, constitute the test image green scan line the second separate picture and composition
The third separate picture of the blue scan line of the test image；
Module is adjusted, for adjustment of displacement being carried out to the scan line of the non-referenced color, so that institute according to determining displacement
Base colors after stating adjustment of displacement overlap each other with the scan line where non-referenced color, obtain the scanning of removal colour edging
Image.
7. device according to claim 6, which is characterized in that the displacement detection module further include:
It determines submodule, is used for according to first separate picture, second separate picture and the third separate picture, really
Determine between three kinds of colors of red, green, blue the presence of offset whether each other, if so, arbitrarily select a kind of color as base colors,
Then other two kinds of colors are non-referenced color；If there are the overlappings of two kinds of colors between three kinds of colors of red, green, blue, with overlapping
Two kinds of colors as base colors, then a kind of other colors are non-referenced color, alternatively, using the color of non-overlap as benchmark
Color, then two kinds of colors of other overlappings are as non-referenced color.
8. device according to claim 7, which is characterized in that the displacement detection module, further includes:
Submodule is selected, for selecting a target scanning lines in the separate picture comprising the reference line, with the target
Scan line is as the reference line, wherein includes object content in the target scanning lines.
9. device according to claim 8, which is characterized in that
The determining submodule is also used in the separate picture comprising the non-referenced color where the determining object content
Purpose scan line, determine the displacement between the purpose scan line and the reference line.
10. according to the described in any item devices of claim 6~9, which is characterized in that
The scan module includes the image of muted color text or muted color lines specifically for one width of scanning, obtains institute
State test image.
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