Image processing method
First Claim
Patent Images
1. An image processing method comprising the steps of:
- scanning an image to be processed in a predetermined pixel pattern with respect to coordinate axes on a predetermined plane;
coding data corresponding to the scanned image pixel pattern in run length representation;
modifying the coded data without decoding for compensating for a predetermined inclination of the image with respect to the coordinate axes on the predetermined plane; and
generating a projection representing the appearance of the image from the coded data on the predetermined plane.
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Abstract
An image processing method which includes a step for obtaining projections formed on coordinate axes having a predetermined inclination with respect to the coordinate axes of the horizontal and vertical directions. The projections are obtained run by run from image data coded in run length representation. The method also includes a step for adding the respective run-by-run projections through the entire image so as to obtain the projections of image data on the inclined coordinate axes. This method enables the image data to be processed without decoding. Further, the method allows a significant reduction in the amount of processing and also allows high-speed processing.
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Citations
8 Claims
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1. An image processing method comprising the steps of:
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scanning an image to be processed in a predetermined pixel pattern with respect to coordinate axes on a predetermined plane; coding data corresponding to the scanned image pixel pattern in run length representation; modifying the coded data without decoding for compensating for a predetermined inclination of the image with respect to the coordinate axes on the predetermined plane; and generating a projection representing the appearance of the image from the coded data on the predetermined plane. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image processing method comprising the steps of:
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coding image data into run length codes including run color information and run length information; storing said run length codes in memory means; reading said run length codes from said memory means to judge whether said run color information is black or white; obtaining, when said run color information indicates a black run, a projection on an inclined coordinate axis with a predetermined inclination angle of θ
, said projection being projected from a black pixel run having a length of l and having a starting coordinate (x, y) on the coordinate axes of the horizontal and vertical directions, said projection having a starting point A and an end point B on said inclined coordinate axis, said points A and B being obtained as follows;
space="preserve" listing-type="equation">A=y cos θ
-x sin θ
space="preserve" listing-type="equation">B=y cos θ
-x sin θ
-l sin θ
; andobtaining a projection of the entire image by accumulating all of said projections projected from black pixel runs of image data, said accumulation being made on said inclined coordinate axis.
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Specification