Image processing apparatus and method
First Claim
Patent Images
1. An image processing apparatus which processes input image data, and sends processed image data to an output device, comprising:
- determination means for determining whether each pixel of the input image data is contained in a vector image or a raster image;
calculation means for calculating a sum total of levels of respective color components for respective pixels of the input data;
comparison means for comparing the sum total of the levels of the respective color components calculated by said calculation means with an allowable input level of the output device; and
adjustment means for, when said determination means determines that a pixel of interest of the input data is contained in the vector image, adjusting the level of the pixel of interest based on the result of the comparison, while when said determination means determines that a pixel of interest of the input data is contained in the raster image, maintaining the level of the pixel of interest.
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Abstract
This invention has as its object to prevent image quality deterioration of vector and raster image parts by allowing adjustment of the toner amount for respective objects when single image data includes both vector and raster image parts. To accomplish this, image data is separated into vector and raster image parts, a vector or raster image attribute is assigned to each pixel, and the toner amount is adjusted for each pixel of each object.
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Citations
14 Claims
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1. An image processing apparatus which processes input image data, and sends processed image data to an output device, comprising:
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determination means for determining whether each pixel of the input image data is contained in a vector image or a raster image; calculation means for calculating a sum total of levels of respective color components for respective pixels of the input data; comparison means for comparing the sum total of the levels of the respective color components calculated by said calculation means with an allowable input level of the output device; and adjustment means for, when said determination means determines that a pixel of interest of the input data is contained in the vector image, adjusting the level of the pixel of interest based on the result of the comparison, while when said determination means determines that a pixel of interest of the input data is contained in the raster image, maintaining the level of the pixel of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image processing method which processes input image data, and sends processed image data to an output device, comprising:
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determination means for determining whether each pixel of the input image data is contained in a vector image or a raster image; calculation means for calculating a sum total of levels of respective color components for respective pixels of the input data; comparison means for comparing the sum total of the levels of the respective color components calculated by said calculation means with an allowable input level of the output device; and adjustment means for, when said determination means determines that a pixel of interest of the input data is contained in the vector image, adjusting the level of the pixel of interest based on the result of the comparison, while when said determination means determines that a pixel of interest of the input data is contained in the raster image, maintaining the level of the pixel of interest. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification