Image processing method and apparatus for preventing coping of specified documents
First Claim
1. A controlling method for generating a control signal used for controlling an image processing apparatus which processes image data representing an image in synchronism with a synchronizing signal, the method comprising the steps of:
- inputting the image data in synchronism with processing performed by said image processing apparatus;
a first judging step, performed by first judging means, for judging similarity between an image represented by the input image data and a specific original image by using a first judging method;
a second judging step, performed by second judging means which is independent of said first judging means, for judging similarity between the image represented by the input image data and the same specific original image as in said first judging step by using a second judging method which is different from the first judging method;
synchronizing said first and second judging means by using the synchronizing signal to provide a common timing signal for said first and second judging means;
determining similarity between the image represented by the input image data and the specific original image based on judgment results of said first and second judging steps; and
outputting a determination result as the control signal, where the control signal controls image processing of the input image data by the image processing apparatus such that the image processing of the image processing apparatus is performed in parallel with said first and second judging steps and said determining step.
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Abstract
An image processing apparatus for performing accurate discrimination between specific originals and ordinary originals. CCD 101 inputs RGB signals, and color-space matching judgment circuit 106 and pattern matching judgment circuit 113 judge the similarity in the color distribution and pattern between the input RGB data and a predetermined specific image data. CPU 114 judges the similarity and print-signal generator 105 generates a change signal in accordance with the judged similarity. The input RGB signals are changed based on the generated change signal and outputted to external color printer 111.
32 Citations
34 Claims
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1. A controlling method for generating a control signal used for controlling an image processing apparatus which processes image data representing an image in synchronism with a synchronizing signal, the method comprising the steps of:
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inputting the image data in synchronism with processing performed by said image processing apparatus; a first judging step, performed by first judging means, for judging similarity between an image represented by the input image data and a specific original image by using a first judging method; a second judging step, performed by second judging means which is independent of said first judging means, for judging similarity between the image represented by the input image data and the same specific original image as in said first judging step by using a second judging method which is different from the first judging method; synchronizing said first and second judging means by using the synchronizing signal to provide a common timing signal for said first and second judging means; determining similarity between the image represented by the input image data and the specific original image based on judgment results of said first and second judging steps; and outputting a determination result as the control signal, where the control signal controls image processing of the input image data by the image processing apparatus such that the image processing of the image processing apparatus is performed in parallel with said first and second judging steps and said determining step.
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2. A controlling apparatus for generating a control signal used for controlling an image processing apparatus which processes image data representing an image in synchronism with a synchronizing signal, the apparatus comprising:
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input means for inputting the image data in synchronism with processing performed by said image processing apparatus; first judgment means for judging similarity between an image represented by the image data input by said input means and a specific original image by using a first judging method; second judgment means for judging similarity between the image represented by the image data input by said input means and the specific original image by using a second judging method which is different from the first judging method; and determination means for determining similarity between the image represented by the image data input by said input means and the specific original image based on judgment results by said first and second judgment means, and for outputting a determination result, wherein the first and second judgment means are arranged independently of each other and perform judging on the same specific original image and on the same image data; and wherein the synchronizing signal provides a common timing signal to synchronize said first and second judgment means in order to output the determination result as the control signal, where the control signal controls image processing of the input image data by the image processing apparatus such that the image processing of the image processing apparatus is performed in parallel with judging by said first and second judging means and determining by said determination means. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An original image judgment method for generating a control signal used for controlling an image processing apparatus which processes image data representing an image in synchronism with a synchronizing signal, the method comprising the steps of:
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inputting image data in synchronism with processing performed by said image processing apparatus; extracting color-space information from the image data; a first obtaining step for obtaining a first comparison result by comparing the extracted color-space information with color-space information of a specific original; extracting pattern information from the image data; a second obtaining step for obtaining a second comparison result by comparing the extracted pattern information with pattern information of the specific original; and judging similarity between the original image and the specific original based on the first comparison result of the color-space information and the second comparison result of the pattern information, wherein the extracted color-space information and the extracted pattern information are compared to the same specific original, wherein the first and second comparison results are obtained from the same original image by respective first and second judgment means arranged independently of each other, and wherein said first and second obtaining steps are performed at the same time as said step of inputting image data in order to output a judgment result from the judging step as the control signal, where the control signal controls image processing of the image data by the image processing apparatus such that the image processing of the image processing apparatus is performed in parallel with said first and second obtaining steps and said judging step. - View Dependent Claims (13, 14, 15, 16)
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17. A controlling method for generating a control signal used for controlling an image processing apparatus which processes image data representing an image, the method comprising the steps of:
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inputting the image data in synchronism with processing performed by said image processing apparatus; a first judging step, performed by first judging means, for judging similarity between an image represented by the input image data and a specific original image by using a first judging method; a second judging step, performed by second judging means which is independent of said first judging means, for judging similarity between the image represented by the input image data and a specific original image by using a second judging method which is different from the first judging method; determining similarity between the image represented by the input image data and the specific original image based on judgment results of said first and second judging steps; and outputting a determination result as the control signal, wherein the control signal controls image processing of the input image data by the image processing apparatus such that the image processing of the image processing apparatus is performed in parallel with said first and second judging steps and said determining step. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A controlling apparatus for generating a control signal used for controlling an image processing apparatus which processes image data representing an image, the apparatus comprising:
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input means for inputting the image data in synchronism with processing performed by said image processing apparatus; first judging means for judging similarity between an image represented by the input image data and a specific original image by using a first judging method; second judging means, which is independent of said first judging means, for judging similarity between the image represented by the input image data and a specific original image by using a second judging method which is different from the first judging method; determination means for determining similarity between the image represented by the input image data and the specific original image based on judgment results of said first and second judging means; and output means for outputting a determination result as the control signal, where the control signal controls image processing of the input image data by the image processing apparatus such that the image processing of the image processing apparatus is performed in parallel with said first and second judging methods and the similarity determination. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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Specification