Size magnification processing unit for processing digital image in accordance with magnification factor
First Claim
1. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
- smoothing means for processing the original digital image under a smoothing characteristic and for obtaining a smoothed image;
smoothing control means, coupled to said smoothing means, for controlling the smoothing characteristic in accordance with the magnification factor under which characteristic the original digital image is to be processed; and
magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means.
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Accused Products
Abstract
A size magnification processing unit processes an original digital image in accordance with a magnification factor. The size magnification unit includes a smoothing unit for processing the original digital image under a smoothing characteristic and for obtaining a smoothed image, a controller for controlling the smoothing characteristic in accordance with the magnification factor, under which characteristic the original digital image is to be processed, and an interpolation unit for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from the smoothing unit. The interpolation characteristic under which the interpolation process is to be performed by the interpolation unit may be controlled in accordance with the magnification factor. The smoothing characteristic and the interpolation characteristic may be controlled in accordance with a type of the original image.
45 Citations
19 Claims
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1. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
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smoothing means for processing the original digital image under a smoothing characteristic and for obtaining a smoothed image; smoothing control means, coupled to said smoothing means, for controlling the smoothing characteristic in accordance with the magnification factor under which characteristic the original digital image is to be processed; and magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means. - View Dependent Claims (2, 3, 4, 5)
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6. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
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smoothing means for processing the original digital image under a smoothing characteristic and for obtaining a smoothed image; edge detecting means for detecting a pixel positioned at an edge of the original digital image; smoothing control means, coupled to said smoothing means and said edge detecting means, for controlling the smoothing characteristic in accordance with a detecting result obtained by said edge detecting means under which characteristic the original digital image is to be processed; and magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means. - View Dependent Claims (7, 8, 9, 10)
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11. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
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smoothing means for processing the original digital image under a smoothing characteristic and for obtaining a smoothed image; edge detecting means for detecting a pixel positioned at an edge of the original digital image; smoothing control means, coupled to said smoothing means and said edge detecting means, for controlling the smoothing characteristic in accordance with a combination of the magnification ratio and a detecting result obtained by said edge detecting means, under which characteristic the original digital image is to be processed; and magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means.
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12. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
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smoothing means for processing the original digital image under a smoothing characteristic and for obtaining a smoothed image; input means for inputting an instruction; smoothing control means, coupled to said smoothing means and input means, for controlling the smoothing characteristic in accordance with the instruction input by said input means, under which characteristic the original digital image is to be processed; and magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means. - View Dependent Claims (13)
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14. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
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smoothing means for processing the original digital image under a predetermined smoothing characteristic and for obtaining a smoothed image; magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means; and magnification control means, coupled to said magnification means, for controlling an interpolation characteristic in accordance with the magnification factor, under which characteristic the interpolation process is to be performed by said magnification means. - View Dependent Claims (15)
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16. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
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smoothing means for processing the original digital image under a predetermined smoothing characteristic and for obtaining a smoothed image; edge detecting means for detecting a pixel positioned at an edge of the original digital image; magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means; and magnification control means, coupled to said magnification means and edge detecting means, for controlling an interpolation characteristic in accordance with a detecting result obtained by said edge detecting means, under which characteristic the interpolation process is to be performed by said magnification means. - View Dependent Claims (17)
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18. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
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input means for inputting an instruction; smoothing means for processing the original digital image under a predetermined smoothing characteristic and for obtaining a smoothed image; magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means; and magnification control means, coupled to said magnification means and input means, for controlling an interpolation characteristic in accordance with the instruction input by said input means, under which characteristic interpolation process is to be performed by said magnification means.
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19. A size magnification processing unit for processing an original digital image in accordance with a magnification factor, said size magnification unit comprising:
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smoothing means for processing the original digital image under a smoothing characteristic and for obtaining a smoothed image; smoothing control means, coupled to said smoothing means, for controlling the smoothing characteristic in accordance with the magnification factor, under which characteristic the original digital image is to be processed; and magnification means, coupled to said smoothing means, for performing an interpolation process in which image data of pixels arranged at sampling intervals depending on the magnification factor is calculated based on the smoothed image supplied from said smoothing means; magnification control means, coupled to said magnification means, for controlling a interpolation characteristic in accordance with the magnification factor under which characteristic interpolation process is to be performed by said magnification means.
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Specification