Image-signal processing apparatus, image-signal processing method and image-signal processing program
AssigneeSony Corporation
InventorHiroshi Kobayashi
Life of this patent
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Abstract
Disclosed herein is an image-signal processing apparatus, including: a band pass filter configured to increase the bit count of an input digital image signal in a bit decompression process and pass on an image signal of a high frequency band; an amplitude limiting section configured to limit the amplitude of the image signal passed on by the band pass filter to a level determined in advance; and a subtractor configured to subtract an image signal output by the amplitude limiting section from the input digital image signal.
Claims18
An image-signal processing apparatus, comprising:
- a band pass filter configured to increase the bit count of an input digital image signal in a bit decompression process and pass on an image signal of a high frequency band;
- an amplitude limiting section configured to limit the amplitude of said image signal passed on by said band pass filter to a level determined in advance;
- and
- a subtractor configured to subtract an image signal output by said amplitude limiting section from said input digital image signal.
An image-signal processing method, comprising the steps of:
- increasing the bit count of an input digital image signal in a bit decompression process and passing on an image signal of a high frequency band;
- limiting the amplitude of said image signal passed on by said band pass step to a level determined in advance;
- adjusting the gain of an image signal limited by said amplitude limiting step;
- and
- subtracting an image signal output by said gain adjustment step from said input digital image signal.
An image-signal processing computer program, comprising:
- a band pass procedure configured to increase the bit count of an input digital image signal in a bit decompression process and pass on an image signal of a high frequency band;
- an amplitude limiting procedure configured to limit the amplitude of said image signal passed on by said band pass procedure to a level determined in advance;
- a gain adjustment procedure configured to adjust the gain of an image signal limited by said amplitude limiting procedure;
- and
- a subtractor configured to subtract an image signal output by said gain adjustment procedure from said input digital image signal.
Dependencies are inferred from the claim text.