JP2003216894A - Processor and program for dropout processing - Google Patents

Processor and program for dropout processing

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Publication number
JP2003216894A
JP2003216894A JP2002009925A JP2002009925A JP2003216894A JP 2003216894 A JP2003216894 A JP 2003216894A JP 2002009925 A JP2002009925 A JP 2002009925A JP 2002009925 A JP2002009925 A JP 2002009925A JP 2003216894 A JP2003216894 A JP 2003216894A
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JP
Japan
Prior art keywords
color
image
area
processing
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002009925A
Other languages
Japanese (ja)
Inventor
Katsumi Ide
Yasunao Isaki
Hideo Kamata
Tatsufumi Kataoka
Shunji Sakane
克美 井出
保直 伊崎
俊司 坂根
達史 片岡
英夫 鎌田
Original Assignee
Fujitsu Frontech Ltd
Fujitsu Ltd
富士通フロンテック株式会社
富士通株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Frontech Ltd, Fujitsu Ltd, 富士通フロンテック株式会社, 富士通株式会社 filed Critical Fujitsu Frontech Ltd
Priority to JP2002009925A priority Critical patent/JP2003216894A/en
Publication of JP2003216894A publication Critical patent/JP2003216894A/en
Application status is Pending legal-status Critical

Links

Abstract

(57) [Summary] [PROBLEMS] To provide a dropout processing device that acquires color information to be dropped out from a form and outputs a binarized image by dropping out based on the color information. I do. A color image input unit acquires a color image of a form, and a target region extraction unit extracts a predetermined partial region image from the color image based on region position information of definition body information. . The histogram creating unit 14 performs an SVH conversion on the RGB of the partial area image to generate histograms of S, V, and H. The color information setting unit 15 obtains color information to be dropped out from these histograms, Is set in the color table and stored. When a pixel of the color image of the form 3 corresponds to the color information of the color table, the binarization unit 16 binarizes the pixel as a background pixel and outputs a binarized image.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
Specially related to
On the optical reading processing (OCR) form
A processing device capable of performing dropout processing using color; and
A processing program that causes a computer to execute the processing.
About ram. [0002] Conventionally, a dropout color of an OCR form is used.
Is managed and printed using PCS values, and the image
Dropout due to the characteristics of the light source of the reading means such as
Processing was done so that For this reason, a specific managed color is dropped.
Must be used as out color, printing cost
Is high, and it is not possible to select any color.
Was. In particular, any combination of warm and cool colors on a single
Performing the process of dropping out several colors at the same time
It was impossible. [0004] Also, printing of a form dropout color
If the density is uneven, remove all parts of the color
Can not be dropped out, and as a result
There is a problem that the cutout processing accuracy is reduced. [0005] Therefore, the color to be dropped out of the form
The following is a method of specifying the. [0006] Japanese Patent Application Laid-Open No. 3-89778 discloses a paper
A method and apparatus for extracting information from
Identify the identification code printed above and set in advance
Compared to the color map that is
The technology to switch the color map set beforehand
It has been disclosed. Further, Japanese Patent Application Laid-Open No. 2-307179 discloses
Is related to the method of setting the slice level of the optical character reader.
And two drop-outs printed on a form
Scan the toecolor printing section and use m slice levels
Binarization, and judge from each binarization result,
A technique for determining a rice level is disclosed. [0008] Japanese Patent Application Laid-Open No. 9-28411 discloses that
Drop the color ID on the area to be read first.
Providing an identification mark having the same color as the printout color,
R (Red), G (Green), B (Blu
e) match the average brightness signal with all bits of the average signal
Alternatively, a technique for specifying a color by comparing by matching the upper n bits
The art is disclosed. [0009] Drop of OCR form
In the out process, the light source characteristics of the image scanner
Multiple dropout colors without switching
The form can be processed continuously while being mixed
Such a technique is desired. Report dropout color
If any color can be used as an image,
Eliminates the processing burden of changing light source characteristics of scanners, etc.
Also, the printing cost burden can be suppressed. Further, a plurality of colors on one form can be processed at one time.
If dropout can be processed with
Can reduce the burden of processing. [0011] Furthermore, a drop-out color on a form
Even if there is information to extract similar color system,
If drop-out processing can be performed, processing flexibility increases. [0012] Of the prior art, Japanese Patent Application Laid-Open No. 3-89778
In the technology disclosed in the official gazette, the identification code is used only for identification.
Only switch the color map that has been set.
It is not possible to use a desired dropout color. Further, Japanese Patent Application Laid-Open No. Hei 2-307179 discloses
The technique shown is for multi-valued images rather than color images
Dropout color only with binarized slice level
If the characters entered in the form are blurred due to judgment
Can also be used as a dropout color
Colors are limited. Also disclosed in Japanese Patent Application Laid-Open No. 9-28411.
The technology achieved is a certain range from the R, G, B average signal.
Is to drop out the color. Same red
Even though dark to light colors are printed on the form
Object (for example, the character frame is marked with a dark color and the surrounding area is marked with a light color)
R signal is dark and light
The colors are almost the same, but the G and B signals are
Is large for small and light colors. Because of this
The dropout color is decided like red
Unless there is a certain range from the average signal of R, G, B
If you want to drop out, select a wide range
Must be used, which affects characters written on the form. FIG. 12 shows the same color, but a dark color and a light color.
R, G, B in the RGB space and the HSV space in the case of
H (Hue), S (Saturation), V
(Value) shows a histogram. FIG. 12 (A)
FIG. 12B shows an example of a dark RGB histogram.
FIG. 12C shows an example of a light-colored RGB histogram.
FIG. 12D shows an example of a dark HSV histogram.
Represents an example of a histogram of HSV of a light color. The histograms shown in FIGS. 12A and 12B
Changes in R, G, B despite the same color
Both quantity and difference are large. The R signal has a dark color and a light color.
In this case, the G signal and the B signal are substantially the same.
The value is small for light colors and large for light colors.
You. Therefore, the range of the G signal and the B signal is widened.
If so, the part printed in dropout color
That other parts may drop out
I understand. On the other hand, the hiss shown in FIGS.
From the data, H, S, and V indicate the amount of change and difference, respectively.
Choose a color that is small and stable
It can be seen that it can be done. The object of the present invention is to
Color that can be used as dropout color
Is to provide out-processing technology. Another object of the present invention is to provide a plurality of forms on one form.
If there is a dropout color, it can be processed at once
It is to provide a technique for dropout processing. Another object of the present invention is to provide a
The area where dropout processing is performed is
Or specify an area where processing is not performed, and
Technology for dropping out only partial areas
Is to provide. [0021] To achieve the above object,
Therefore, the present invention provides a process for dropping out a form color.
A drop-out processing device for performing
Color image input means for inputting a color image;
Area position information of a predetermined partial area to be cut out from the image
Information and obtain the part according to the area position information.
Partial region image extracting means for extracting a region, the partial region
, HSV color information is extracted for each pixel from H, S,
Histogram creation to create each V histogram
Means and should be dropped out of the histogram.
The drop-out condition consisting of the color information
Color information setting means for storing the pop-out conditions in a table
And an HSV camera for each pixel of the color image of the form.
Color information, and the pixels of the color image
If the pull-out condition is satisfied, the pixel is regarded as the background.
A binarizing unit for performing a binarizing process. Also, according to the present invention, the form color can be dropped out.
Drop-out processing to perform
A program for realizing the form,
A color image input process for inputting a color image;
ー Area position of a predetermined partial area to be cut out from the image
Information and obtains the unit according to the area position information.
A partial area image extracting process for extracting a partial area;
Extract HSV color information for each pixel from the area,
Histogram for creating histograms of S and V respectively
Creation process and drop out from the histogram
Find the dropout condition consisting of the color information to be
Color information setting processing that stores dropout conditions in a table
HSV for each pixel of the color image of the form
Color information is extracted, and pixels of the color image
If the pixel meets the
The computer executes the binarization process for performing the binarization process.
Is to let them go. The processing device according to the present invention includes a form (printing
All of the targets for the process of dropping out a part
Includes paper and documents. ) From drop out color
In order to retrieve information, a predetermined
Specify a partial area. The following method is used to specify it
Is used. (1) The definition form information, which is information related to
Crab, including the part printed in dropout color
Define the position information of the separation area, and process according to the present invention.
The device acquires this definition body information together with the input of the form.
You. (2) Dropout color, such as the top left or top right of the form
The location information of a specific area including the part printed with
The location information is determined in advance in the processing device.
To be kept. The apparatus according to the present invention uses the form
Acquire a color image and check if it is a predetermined partial area on the color image.
The color information that matches the color information
Is set as the dropout color, and the color image
The part that can be judged as the set dropout color from the image
By binarizing the minutes as the background,
Drop out the part printed in the color
Generates binarized images using information such as important handwritten characters as information
I do. Each processing means or function of the present invention is
The program realized by the data is read by the computer.
Removable, portable media memory, semiconductor memory, hard disk
Can be stored on a suitable recording medium such as a disk.
Provided by being recorded on these recording media, or
Transmission / reception using various communication networks via the
Provided. FIG. 1 shows an embodiment of the present invention.
1 shows a configuration example of a drop-out processing device 1 that performs the operation. The drop-out processing device 1 includes a control unit 11
And a color image input unit 12, a target area extraction unit 13,
Stogram creation unit 14, color information setting unit 15, binarization
Unit 16, color image storage unit 22, target area
Image storage unit 23, histogram storage unit 24, color
It has each storage unit (memory) of the table storage unit 25. The control unit 11 controls the drop-out processing device 1
It is a means for controlling each processing means and the storage unit. The color image input unit 12 has a drop-out
A color image of the form 3 to be processed is fetched and
Means for storing the color image in the color image storage unit 22.
is there. The color image input unit 12 is implemented by an image scanner or the like.
Can be manifested. The target area extracting unit 13 defines the physical condition of the form 3
From the color image of the input form 3 based on the report 21
Extract one or more target areas to extract color information
Each is set as a target area image, and the target area image storage unit 23
Means to store the The definition body information 21 is
It may be stored in the dropout processing device 1,
Or, get it together with Form 3
Is also good. FIG. 2 shows an example of specifying a target area. FIG.
As shown in (A), two areas R1 and
And the region R2 are different dropout colors D
If the part is printed by C1 and DC2, the form
3 in the definition body information 21 of the target areas R1 and R2
Define information. FIG. 2B shows the area position of the definition body information 21.
The example of information is shown. For each target area in the definition body information 21
The start point coordinates, area width and area
The height of the area is set. For example, for the region R1,
Start coordinates (Xr1, Yr1), area width Wr1, area height
Hr1 is set. Here, the drop of the region R1
The out color DC1 is red, and the drop-out of the region R2 is performed.
The color DC2 is blue, but the color is
There is no need to set information about. [0033] The histogram creating section 14 is provided with a target area image.
Each pixel of the target area image stored in the storage unit 23 is
To HSV space and generate HSV histogram
And stores the data in the histogram storage unit 24. The color information setting unit 15 includes a histogram storage unit.
HSV histogram of the target area image stored in H.24
From the condition for dropping out the color in form 3 (color information
Report), and set the calculated value (parameter).
To store the color table in the color table storage unit 25
It is a step. FIG. 3 shows an example of the color table. Kara
A table is set for each target area. The color in Figure 3
-Conditions for dropping out colors for tables
Represents that Hmin <H <Hmax, Smin <S <Smax, and Vmin <V <Vmax. The binarization section 16 stores the color image in the color image storage section 22.
Each pixel of the entire color image of the stored form 3 is represented by RGB
To the HSV space, and convert the HSV converted image
Refer to the parameters set in the error table and
If the minute meets the set conditions, it is regarded as the background
And stores the binarized image in a binarized image.
This is a means for storing in the unit 26. FIG. 4 shows the flow of the process of the present invention. First, a color image input unit (image scan)
12) 12 captures a color image of one form 3 and
Is stored in the color image storage unit 22 (step
Step S1). Assume that the form shown in FIG.
You. Then, the target area extracting unit 13
The outline of the form is detected from the color image in the image storage unit 22, and the
According to the area position information defined in the body information 21
The target regions R1 and R2 are cut out and these target region images
Is stored in the target area image storage unit 23 (step S
2). The histogram creating unit 14 calculates the target area R
For each of the R1 and R2 target area images,
Conversion from RGB to HSV space (step S3). R
The conversion method from GB to HSV is processed using a known method.
Perform The maximum value among the signal values of R, G, and B is max.
And the minimum value is min. V is max and S is
It is determined by (max-min) / max. H is R, G, B
Divide the difference between the two not the largest by (max-min)
And is determined by FIG. 5 shows the conversion process from RGB to HSV.
4 shows a processing flowchart. The value of H ranges from 0 to
360, and 360 and 0 are consecutive values.
It is assumed that it is in the shape of a circle. First, the histogram creating unit 14 sets the RGB
Is the maximum value of max, and the minimum value of RGB is min.
(Step S11), max is set to V (Step S1)
2), (max-min) / max is set to S (step
S13). Then, if max is equal to R (step
S14), 60 (GB) / (max-min) is H
(Step S15). On the other hand, max is equal to R
If not (step S14), max is equal to G
Check if max is equal to G (step
S16), 120 + 60 (BR) / (max-mi)
n) is set to H (step S17), and max is equal to G
If not (step S16), 240 + 60 (RG)
/ (Max-min) is set to H (step S18). Thereafter, the histogram creating unit 14
Each pixel in the image of the area is scanned and each H, S, V
Create a gram and store it in the histogram storage unit 24
(Step S4). Then, the color information setting unit 15
From the histogram stored in the
Calculate the condition for dropping out the color with vote 3,
Store the parameters in the color table (step
S5). FIG. 6 shows a process for acquiring color information of a dropout.
3 is a flowchart of the process. First, the color information setting unit 15
Is the target area image stored in the histogram storage unit 24
A histogram is obtained by scanning the pixels in
Step S21), the maximum value max of the histogram distribution and the maximum value
A small value min is obtained (step S22). And the most
The value obtained by adding the constant c1 to the large value max is defined as max (step
S23), the value obtained by subtracting the constant c2 from the minimum value min is expressed as mi
n. The constants c1 and c2 take into account the color variation on the form.
It is a constant for consideration. Specific numerical values of constants c1 and c2
Is calculated from the histograms of H, S, and V
μ, standard deviation σ, and n × σ (n is a natural number) a constant c
1, c2. Next, the binarizing section 16 is provided with a color image storage section.
22 to obtain a color image of the form 3 stored in the
Convert each pixel of the image from RGB to HSV (step S
6). Further, the image data stored in the color table storage unit 25 is stored.
Image converted to H, S, V by collating with color table
If the pixels satisfy the conditions of the color table,
The element is regarded as a background pixel (step S7). Background pixel
The conditions to be performed are, for example, as follows. "Region R
1 (Hmin <H <Hmax and Smin <S <Sm
ax and Vmin <V <Vmax), or
In the region R2, (Hmin <H <Hmax and Smin <S
<Smax and Vmin <V <Vmax).
In addition, the binarization unit 16 performs color conversion in accordance with the above conditions.
The image is binarized (step S8). That is,
If the above dropout condition is met,
By performing the binarization process by simulating the background pixel, the region R
1 and the color printed in region R2 are dropped out
Will be. In the binarization process, the value of V is set as a threshold value.
Binarization processing may be performed. Also synthesizes Y signal from RGB
Then, binarization processing may be performed using the Y signal as a threshold. To the threshold
In the binarization process, the threshold value is fixed and a simple magnitude comparison is performed.
May be performed, or a threshold may be determined by discriminant analysis.
You may do it. The binarizing section 16 binarizes the form 3
The image is output to the binarized image storage unit 26 (step S
9). FIG. 7 shows a color image of a form to be processed.
And an example of a binarized image as a processing result. The drop-out processing device 1 is shown in FIG.
Handwritten printed in red dropout color as shown
Enter the color image of the form 3 in which characters are entered, and
Drop out the print color (red) of the upper target area R
Conditions are set in the color table. Soshi
And convert the color image of form 3 to binary based on the color table
Process. FIG. 7B shows a binarized image as a processing result.
Here is an example. In the binarized image of FIG. 7B, FIG.
Color that appears as information in a color image
The part printed in (red) refers to the color table
Is dropped out by being considered as a background,
You can see that only handwritten characters are information
You. In this embodiment, the target area R is
Set a single-color area printed in a rectangle with the color to be
May be specified, and the part including the background and characters and ruled lines of the form
May be set as the region. Target area R is background and text
If it is a part consisting of etc., it is the color information of the character part
The processing for extracting the injuries is performed. This process will be described with reference to FIG.
I will tell. FIG. 8A shows the histogram creation unit 14.
RGB of the target area image (color image) of the target area R shown
Is subjected to HSV conversion, and a V plane as shown in FIG.
Generate an image. Then, from the V-plane image,
Then, binarization is performed only from the information of V, and the binarization shown in FIG.
Generate a plane binary image. Then, in FIG.
Target area image (color image) and V-plane binarized image
The image is combined with the V-plane binarized image shown in FIG.
Only the black area of the image is extracted, and a sentence as shown in FIG.
Make a color image with only the character part. And the histogram
The creating unit 14 converts the RGB color of only the character part in FIG.
-Image is subjected to HSV conversion processing, H, S, V histogram
Generate The subsequent processing is shown in the flowchart of FIG.
Is the same as the processing of steps S5 to S9. That is,
Calculate the conditions for dropping out the color in Form 3, and calculate
The value is set in the color table, and the color image
For the color image of Form 3, each pixel is converted from RGB to HSV
To H, S, and V with reference to the color table.
If the element satisfies the condition, the pixel is regarded as a background pixel.
And stores the binarized image in the binarized image storage unit 26
I do. The drop-out processing device 1 has an area R1
If there are a plurality of regions such as region R2, the region
Set the dropout condition based on R1
And a color table based on the region R2.
Pixel using two color tables
Simulate with element and drop in two different colors at the same time
Out processing can be performed. In this embodiment, the definition information 21
Of the target region R for obtaining the dropout condition
Perform dropout processing as well as area location information
The area position information of the processing area P is defined, and
Drop out color only in specified area, not face
It can also be done. FIG. 9A shows a dropout processing area.
An example of the form 3 when setting is shown. As shown in FIG.
In the form 3, the dropout color DC1 is red.
Region R1 and the dropout color DC1.
Dropout processing, which is an area where binarization processing is performed
It is assumed that the area P1 is set. In this case, in the definition body information 21 of the form 3,
Of the target region R for obtaining the dropout condition
Processing area for performing area position information and dropout processing
Area position information of the area P is defined. FIG. 9B shows the definition.
Region position information of target region R in body information 21 and drop
An example of region position information of the processing region P of the out process is shown. As described above, the target area of the dropout processing is as follows.
By setting the area, for example, red dropout
When there is a seal (red) on a form printed in color
The pair printed in the target area R with the dropout color
Set the elephant area R and exclude the seal area
By setting the processing area P for dropout,
Red stamp information while performing color dropout processing
It is possible to perform the processing of leaving the information. Further, the drop-down
Area position information of the processing exclusion area E in which the
Can also be defined. FIG.
6 shows an example of the form 3 when the processing process exclusion area E is set.
As shown in FIG.
A target area R1 in which the color DC1 is red,
When the processing exclusion area E1 in which the out processing is not performed is set
I do. In this case, the form definition information 21 includes
Area position of area R for finding drop-out condition
Information and area position information of the processing exclusion area E are defined.
You. FIG. 10 (B) is a diagram of the target region R in the definition body information 21.
Area position information and processing exclusion area E of dropout processing
The example of area | region position information is shown. Thus, with the red dropout color
If there is a seal (red) on the printed form,
The target area R printed with the dropout color in the area R
And set the area of the seal as a processing exclusion area E
By setting, red dropout processing is performed
The process of leaving the red seal as information is possible
It works. It should be noted that the processing area P and the
Both the processing exclusion area E and the processing exclusion area E can be set. The drop-out processing device 1
In the case of the process of extracting the target region R from the
Using fixed partial area information 31 instead of 21
it can. The fixed partial area information 31 is determined in advance.
Area position such as position and size of partial area on form 3
Information. FIG. 11A shows a portion that is a fixed partial region.
The example of the area | region a is shown. Ymm below the top right corner of the outline of Form 3
A rectangular area of width wmm and height hmm with xmm on the left as the upper right end
In the case of the partial area a, as shown in FIG.
These values are defined as fixed partial area information 31, and
Store in advance in the storage means in the dropout processing device 1
deep. The target area extraction unit 13 is shown in FIG.
To detect the outline of the form from the color image of form 3
Then, with reference to the fixed partial area information 31,
The extracted partial area a is cut out, and the image of the cut out target area is cut out.
The image is stored in the target area image storage unit 23. The present invention has been described with reference to the embodiments.
However, the present invention has various modifications within the scope of the gist.
It is possible. For example, in the embodiment of the present invention, the color
The image input unit 12 is implemented by an image scanner or the like.
As described above, the color image input unit 12
With another image scanner independent of the
Means for acquiring a color image file of the acquired form;
It is also possible to implement it. The features of the embodiments and examples of the present invention are listed.
The result is as follows. (Appendix 1) Perform processing to drop out the form color
A drop-out processing device, comprising:
Color image input means for inputting an image;
Area position information of a predetermined partial area to be cut out from the image
And obtain the partial area according to the area position information.
A partial area image extracting means for extracting a region,
The HSV color information is extracted for each pixel from H, S, V
Histogram creation procedure to create each histogram
Steps and should drop out of the histogram
Find the drop-out condition consisting of color information, and
Color information setting means for storing a pull-out condition in a table;
HSV color for each pixel of the color image of the form
Information, and the pixels of the color image
When the out condition is satisfied, a binary value that regards the pixel as the background
And a binarizing means for performing a binarizing process.
Dropout processing device. (Appendix 2) For the dropout processing device described in Appendix 1
The partial area image extracting means may include a content of the form
Of the partial area set in the definition body information that defines
Dropout processing device characterized by acquiring information
Place. (Appendix 3) For the dropout processing device described in Appendix 1
Further, the position information of the partial area of the form
A position information storage unit for storing the partial region image;
The output unit is the part stored in the position information storage unit.
Drop-aperture for acquiring location information of an area
Uto processing equipment. (Supplementary Note 4) The dropout processing device described in Supplementary Note 1
The partial area image extracting means may include
Area position information and the area to be processed by the binarization processing means;
The processing area position information, which is position information, is obtained, and the binary
Conversion processing means, the processing area position in the color image
The feature is to perform processing on the area defined by the information
Dropout processing equipment. (Supplementary note 5) The dropout processing device described in Supplementary note 1
The partial area image extracting means may include
Region position information and the binarization processing means do not perform processing
Acquires processing exclusion area position information that is the area position information
And the binarization processing means includes:
Areas other than the area defined by the processing exclusion area location information
Dropout processing device characterized by performing processing
Place. (Supplementary note 6) The dropout processing device described in Supplementary note 1
Wherein the partial area image extracting means is configured to output the color image
Means for cutting out a plurality of partial areas from
The gram creating means includes H, S,
Histogram creation to create each V histogram
Means, wherein the color information setting means is provided for each of the partial areas.
Drop out of each of the above histograms
Find the dropout condition consisting of the color information to be
A means for storing dropout conditions in a table,
The binarizing unit is configured to execute each pixel of the color image of the form
HSV color information is extracted for each color image.
If the element satisfies any one of the above dropout conditions
Is a means for performing a binarization process that regards the pixel as a background.
A drop-out processing device, characterized in that: (Appendix 7) Perform processing to drop out the form color
To make a computer realize drop-out processing
A color image of the form
Color image input processing to be performed and
Obtain the area position information of the partial area to be cut out,
Extracting the partial area according to the area position information
Partial area image extraction processing, and for each pixel from the partial area
The HSV color information is extracted to the H, S, V
A histogram creation process for creating a stogram;
From color information that should be dropped out of the
The drop-out condition
Color information setting processing for storing
Extract HSV color information for each pixel of the color image
And the pixels of the color image satisfy the dropout condition.
If it satisfies, the binarization process is performed to consider the pixel as the background.
That the computer executes the binarization process.
Dropout processing program. (Appendix 8) Perform processing to drop out form colors
A drop-out processing method, comprising:
A color image input process for inputting an image;
ー Area position of a predetermined partial area to be cut out from the image
Information and obtains the unit according to the area position information.
A partial area image extracting process for extracting a partial area;
The HSV color information is extracted for each pixel from the divided area,
Histogram for creating H, S, V histograms
Ram creation process and drop
Find a dropout condition consisting of color information to be
The color information for storing the drop-out conditions in a table
Report setting process, each pixel of the color image of the form
HSV color information is extracted for each color image.
If the pixel satisfies the drop-out condition,
And a binarization process for performing a binarization process that regards the background as a background.
A drop-out processing method characterized in that: (Appendix 9) Perform processing to drop out form colors
To make a computer realize drop-out processing
Recording medium for recording a program for
A color image input process for inputting a color image of
Region position of the partial region to be cut out from the color image
Location information, and according to the area location information,
A partial area image extraction process for extracting a partial area;
Extract HSV color information for each pixel from the area,
Histogram for creating histograms of S and V respectively
Creation process and drop out from the histogram
Find the dropout condition consisting of the color information to be
Color information setting processing that stores dropout conditions in a table
HSV for each pixel of the color image of the form
Color information is extracted, and pixels of the color image
If the pixel meets the
The computer executes the binarization process for performing the binarization process.
Characterized by recording a program for executing
Dropout processing program recording medium. As described above, according to the present invention,
The color printed in a predetermined area on the form
By considering it as a dropout color in the form of
An image with this dropout color removed from the color image
Create an image. As a result, the dropout color
This form defines the color like this color in advance
No need to do. The unit of the reading process is one color.
Not only forms but also forms of different colors
But you can read the form. Also, the judgment is made based on the print color on the form to be read.
Therefore, it does not depend on the characteristics of the image scanner.
Process images from multiple image scanners simultaneously
can do. When printing a form, the number of printing
Even if the color changes slightly, it is judged by the color information of the read form
Therefore, reading can be performed without any problem in processing accuracy.
In extreme cases, reading without any change even if the color is changed on the way
Can be performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an example of a device configuration according to the present invention. FIG. 2 is a diagram illustrating an example of designation of a target area. FIG. 3 is a diagram illustrating an example of a color table. FIG. 4 is a processing flowchart of the present invention. FIG. 5 is a process flowchart of a process of performing HSV conversion of RGB of each pixel of an image. FIG. 6 is a flowchart of a dropout color information acquisition process. FIG. 7 shows an example of a color image to be processed and processing result 2;
It is a figure showing an example of a value image. FIG. 8 is a diagram for describing an area image extraction process when a target area includes a background and a character string. FIG. 9 is a diagram illustrating an example of information defined in a form and definition body information when a processing area of a dropout process is set. FIG. 10 is a diagram illustrating an example of information defined in a form and definition body information when a processing exclusion area of the dropout processing is set. FIG. 11 is a diagram illustrating an example of a fixed partial area and fixed partial area information. FIG. 12 is a diagram showing a comparison between a histogram of RGB and a histogram of HSV. [Description of Signs] 1 Dropout processing device 11 Control unit 12 Color image input unit 13 Target area extraction unit 14 Histogram creation unit 15 Color information setting unit 16 Binarization unit 21 Definition body information 22 Color image storage unit 23 Target area image Storage unit 24 Histogram storage unit 25 Color table storage unit 26 Binary image storage unit 31 Fixed partial area information

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Hideo Kamada             4-1-1 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture             No. 1 Inside Fujitsu Limited (72) Inventor Shunji Sakane             4-1-1 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture             No. 1 Inside Fujitsu Limited (72) Inventor Katsumi Ide             4-1-1 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture             No. 1 Inside Fujitsu Limited (72) Inventor Tatsufumi Kataoka             4-1-1 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture             No. 1 Inside Fujitsu Limited F term (reference) 5B029 BB02 CC26 EE08                 5C077 LL02 MP08 PP32 PP35 PP37                       PQ19 RR02 RR15 SS01                 5C079 HB01 HB06 HB11 LA34 NA07                       PA01 PA02

Claims (1)

  1. Claims 1. A drop-out processing device for performing a process of dropping out a color of a form, comprising: a color image input means for inputting a color image of the form; A partial region image extracting means for acquiring region position information of a partial region to be cut out and extracting the partial region according to the region position information; extracting HSV color information for each pixel from the partial region; , V; a histogram creating unit for creating each histogram; a color information setting unit for obtaining a dropout condition including color information to be dropped out from the histogram; and storing the dropout condition in a table; and the color of the form. The HSV color information is extracted for each pixel of the image, and the pixels of the color image are A dropout processing device comprising: a binarization unit that performs a binarization process that regards the pixel as a background when a dropout condition is satisfied. 2. The drop-out processing apparatus according to claim 1, wherein the partial area image extracting unit is a processing unit that is an area position information of the partial area and a position information of an area to be processed by the binarization processing unit. A drop-out processing apparatus, comprising: acquiring area position information; and the binarization processing means performing processing on an area defined by the processing area position information in the color image. 3. The drop-out processing device according to claim 1, wherein the partial area image extracting means is area position information of the partial area and position information of an area not processed by the binarization processing means. Drop-out processing, wherein the binarization processing means performs processing on an area of the color image other than the area defined by the processing exclusion area position information. apparatus. 4. The drop-out processing device according to claim 1, wherein said partial area image extracting means is means for cutting out a plurality of partial areas from said color image, and said histogram creating means is said plurality of partial areas. H, S, and V for each of the histograms, wherein the color information setting means obtains a drop-out condition including color information to be dropped out of each of the histograms for each of the partial areas, Means for storing the drop-out condition in a table, wherein the binarizing means extracts HSV color information for each pixel of the color image of the form, and determines whether a pixel of the color image is one of the drop-out conditions. If any one of the conditions is satisfied, it is determined that the pixel is a means for performing a binarization process that regards the pixel as a background. Drop-out processing apparatus according to symptoms. 5. A program for causing a computer to perform a dropout process for performing a process of dropping out a color of a form, comprising: a color image input process for inputting a color image of the form; Acquiring partial position information of the partial region to be cut out and extracting the partial region according to the partial position information; extracting HSV color information for each pixel from the partial region; A histogram creation process for creating S and V histograms; a color information setting process for determining a dropout condition including color information to be dropped from the histogram; and storing the dropout condition in a table; The HSV color information is extracted for each pixel of the color image, When the pixel of the image is the dropout condition is satisfied, the dropout processing program and a binarization processing for performing binarization processing regarded as background the pixels, and characterized by causing a computer to execute.
JP2002009925A 2002-01-18 2002-01-18 Processor and program for dropout processing Pending JP2003216894A (en)

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WO2008106004A1 (en) * 2007-02-26 2008-09-04 Eastman Kodak Company Multi-color dropout for scanned document
JP2009159185A (en) * 2007-12-26 2009-07-16 Hitachi Computer Peripherals Co Ltd Drop out color treatment method and its apparatus
EP2091225A2 (en) 2008-02-15 2009-08-19 Mitsubishi Electric Corporation Image reading apparatus
JP2010003124A (en) * 2008-06-20 2010-01-07 Hitachi Computer Peripherals Co Ltd Dropout color processor and dropout color processing method using the same
JP2011018359A (en) * 2010-09-16 2011-01-27 Hitachi Computer Peripherals Co Ltd Dropout color processing apparatus and dropout color processing method using the same
US8326028B2 (en) 2007-12-26 2012-12-04 Hitachi Computer Peripherals Co., Ltd. Dropout color processing method and processing apparatus using same
US8693743B1 (en) 2010-02-19 2014-04-08 Olive Tree Media, LLC Analysis and display of multiple biomarker co-expression in cells and tissues
JP2016212457A (en) * 2015-04-28 2016-12-15 富士通フロンテック株式会社 Reading device and reading method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008106004A1 (en) * 2007-02-26 2008-09-04 Eastman Kodak Company Multi-color dropout for scanned document
US7853074B2 (en) 2007-02-26 2010-12-14 Eastman Kodak Company Multi-color dropout for scanned document
JP2009159185A (en) * 2007-12-26 2009-07-16 Hitachi Computer Peripherals Co Ltd Drop out color treatment method and its apparatus
US8326028B2 (en) 2007-12-26 2012-12-04 Hitachi Computer Peripherals Co., Ltd. Dropout color processing method and processing apparatus using same
JP4654237B2 (en) * 2007-12-26 2011-03-16 日立コンピュータ機器株式会社 Dropout color processing device
EP2091225A2 (en) 2008-02-15 2009-08-19 Mitsubishi Electric Corporation Image reading apparatus
US7936488B2 (en) 2008-02-15 2011-05-03 Mitsubishi Electric Corporation Image reading apparatus
JP4627787B2 (en) * 2008-06-20 2011-02-09 日立コンピュータ機器株式会社 Dropout color processing apparatus and dropout color processing method using the same
JP2010003124A (en) * 2008-06-20 2010-01-07 Hitachi Computer Peripherals Co Ltd Dropout color processor and dropout color processing method using the same
US8693743B1 (en) 2010-02-19 2014-04-08 Olive Tree Media, LLC Analysis and display of multiple biomarker co-expression in cells and tissues
JP2011018359A (en) * 2010-09-16 2011-01-27 Hitachi Computer Peripherals Co Ltd Dropout color processing apparatus and dropout color processing method using the same
JP2016212457A (en) * 2015-04-28 2016-12-15 富士通フロンテック株式会社 Reading device and reading method

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