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US 8,014,620 B2Granted
Image processing system, image compression system, image editing system, computer readable medium, computer data signal and image processing apparatus
AssigneeFuji Xerox Co., Ltd.
InventorShunichi Kimura
Life of this patent
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Abstract
An image processing system includes an identification unit, a region division unit and a pixel value change unit. The identification unit identifies a second pixel among an image including a first pixel and the second pixel. A pixel value of the first pixel is not to be changed. A pixel value of the second pixel is to be changed. The region division unit divides the image into regions. The pixel value change unit changes the value of the second pixel to a predetermined value through a filtering process when the second pixel identified by the identification unit is included within the regions obtained by the region division unit.
Claims24
An image processing system comprising:
- an identification unit that identifies at least one second pixel among an image including a first pixel and the at least one second pixel, a pixel value of the first pixel being not to be changed and a pixel value of the at least one second pixel being to be changed;
- a region division unit that divides the image into a plurality of frequency regions and a plurality of frequency sub-regions within the plurality of frequency regions using a processor;
- a pixel value change unit that changes the value of the at least one second pixel to a value through a filtering process when the at least one second pixel identified by the identification unit is included within the plurality of frequency regions or the plurality of frequency sub-regions obtained by the region division unit, wherein the pixel value change unit is configured to switch between an output value zero norm and a local power minimum norm based on whether the first pixel is included in the plurality of frequency regions or the plurality of frequency sub-regions.
An image processing system comprising:
- an identification unit that identifies at least one second pixel among an image including a first pixel and the at least one second pixel, a pixel value of the first pixel being not to be changed and a pixel value of the at least one second pixel being to be changed;
- a region division unit that divides the image into a plurality of frequency regions and a plurality of frequency sub-regions within the plurality of frequency regions using a processor;
- and
- a first pixel value change unit that changes a value of the at least one second pixel in a numerical direction in which the value after a filtering process becomes zero when the at least one second pixel identified by the identification unit is included within the plurality of frequency regions or the plurality of frequency sub-regions obtained by the region division unit, wherein the pixel value change unit is configured to switch between an output value zero norm and a local power minimum norm based on whether the first pixel is included in the plurality of frequency regions or the plurality of frequency sub-regions.
1 more element
An image processing system comprising:
- an identification unit that identifies a second pixel among an image including a first pixel and the second pixel, a pixel value of the first pixel being not to be changed and a pixel value of the second pixel being to be changed;
- a region division unit that divides the image into a plurality of frequency regions and a plurality of frequency sub-regions within the plurality of frequency regions using a processor;
- and
- a pixel value change unit that changes a value of the second pixel in a numerical direction in which a value of power after a filtering process becomes minimum when the second pixel identified by the identification unit is included within the plurality of frequency regions or the plurality of frequency sub-regions obtained by the region division unit, wherein the pixel value change unit is configured to switch between an output value zero norm and a local power minimum norm based on whether the first pixel is included in the plurality of frequency regions or the plurality of frequency sub-regions.
1 more element
A non-transitory computer readable medium storing a program causing a computer to execute image processing, the image processing comprising:
- identifying a second pixel among an image including a first pixel and the second pixel, a pixel value of the first pixel being not to be changed and a pixel value of the second pixel being to be changed;
- dividing the image into a plurality of frequency regions and a plurality of frequency sub-regions within the plurality of frequency regions using a processor;
- and
- changing the value of the second pixel to a value through a filtering process when the identified second pixel is included within the plurality of frequency regions or the plurality of frequency sub-regions obtained by the dividing, wherein the filtering process is configured to switch between an output value zero norm and a local power minimum norm based on whether the first pixel is included in the plurality of frequency regions or the plurality of frequency sub-regions.
1 more element
A non-transitory computer readable medium storing a program causing a computer to execute image processing, the image processing comprising:
- identifying at least one second pixel among an image including a first pixel and the at least one second pixel, a pixel value of the first pixel being not to be changed and a pixel value of the at least one second pixel being to be changed;
- dividing the image into a plurality of frequency regions and a plurality of frequency sub-regions within the plurality of frequency regions;
- changing a value of the at least one second pixel in a numerical direction in which the value after a filtering process becomes zero when the identified at least one second pixel is included within the plurality of frequency regions or the plurality of frequency sub-regions obtained by the dividing, wherein the filtering process is configured to switch between an output value zero norm and a local power minimum norm based on whether the first pixel is included in the plurality of frequency regions or the plurality of frequency sub-regions.
A non-transitory computer readable medium storing a program causing a computer to execute image processing, the image processing comprising:
- identifying a second pixel among an image including a first pixel and the second pixel, a pixel value of the first pixel being not to be changed and a pixel value of the second pixel being to be changed;
- dividing the image into a plurality of frequency regions and a plurality of frequency sub-regions within the plurality of frequency regions;
- and
- changing a value of the second pixel in a numerical direction in which a value of power after a filtering process becomes minimum when the identified second pixel is included within the plurality of frequency regions or the plurality of frequency sub-regions obtained by the dividing, wherein the filtering process is configured to switch between an output value zero norm and a local power minimum norm based on whether the first pixel is included in the plurality of frequency regions or the plurality of frequency sub-regions.
1 more element
Dependencies are inferred from the claim text.