Image processor which removes background from image data
AssigneeMinolta Co., Ltd.
InventorsSHOJI IMAIZUMI, JUNJI NISHIGAKI, KENICHI MORITA
Life of this patent
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Abstract
In an image processor, after the background of input image data is removed, the image data are divided into a plurality of areas, and the attribute of image is discriminated for each area. The image data after the background removal is compressed according to the result of attribute discrimination. The amount of the background removal can be controlled. Preferably, the amount of the background removal is controlled according to the discriminated attribute. Then, the background can be removed without artificial feeling in a reproduced image.
Claims20
An image processor comprising:
- a background remover which removes background from image data;
- a divider which divides the image data, which have been subjected to background removal by said background remover, to a plurality of blocks;
- an attribute discriminator means for discriminating an attribute of image data in each of the blocks obtained by said divider;
- and
- a compressor which compresses the image data in each block, from which the background has been removed, according to the attribute of the block discriminated by said attribute discriminator means.
An image processor comprising:
- a background remover which removes an amount of background removal from image data;
- an attribute discriminator means for discriminating an attribute of the image data on which said background remover has removed a predetermined amount of the background;
- a controller which changes the amount of background removal or said background remover according to the attribute discriminated by said attribute discriminator means;
- and
- a compressor which compresses the image data on which the background has been removed by said background remover by the amount changed by said controller.
An image processor comprising:
- a background remover which removes background from image data;
- a first compressor which compresses the image data which have been subjected to background removal by said background remover;
- a divider divides the image data, which have been subjected to background removal by said background remover, to a plurality of blocks;
- an attribute discriminator means for discriminating an attribute of image data in each of the blocks;
- and
- a second compressor which compresses the image data in a block, which have been compressed by said first compressor, according to the attribute of the block discriminated by said attribute discriminator means.
A method for processing an image comprising the steps of:
- removing background from image data;
- compressing the image data which have been subjected to background removal;
- dividing the image data, which have been subjected to background removal, to a plurality of blocks;
- deciding an attribute of image data in each block;
- and
- compressing the image data in each block, which have been compressed after the background removal, according to the attribute of the block.
Dependencies are inferred from the claim text.