SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, IMAGING APPARATUS, AND IMAGING PROCESSING METHOD
First Claim
Patent Images
1. A signal processing device comprising:
- an enhancement countermeasure unit in which when a linear matrix gain using a linear matrix coefficient is multiplied to a pixel value of an image signal output for each channel by a pixel of an imaging device, whereby an enhancement of color occurs in an image based on the image signal, the image signal in which a portion where the enhancement of color occurs is corrected for each channel is output based on a color-difference component separated from the result of multiplication of the linear matrix coefficient to the pixel value for each channel and a luminance calculated from the result.
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Abstract
A signal processing device includes: an enhancement countermeasure unit in which when a linear matrix gain using a linear matrix coefficient is multiplied to a pixel value of an image signal output for each channel by a pixel of an imaging device, whereby an enhancement of color occurs in an image based on the image signal, the image signal in which a portion where the enhancement of color occurs is corrected for each channel is output based on a color-difference component separated from the result of multiplication of the linear matrix coefficient to the pixel value for each channel and a luminance calculated from the result.
20 Citations
7 Claims
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1. A signal processing device comprising:
an enhancement countermeasure unit in which when a linear matrix gain using a linear matrix coefficient is multiplied to a pixel value of an image signal output for each channel by a pixel of an imaging device, whereby an enhancement of color occurs in an image based on the image signal, the image signal in which a portion where the enhancement of color occurs is corrected for each channel is output based on a color-difference component separated from the result of multiplication of the linear matrix coefficient to the pixel value for each channel and a luminance calculated from the result. - View Dependent Claims (2, 3, 4)
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5. A signal processing method in which when a linear matrix gain using a linear matrix coefficient is multiplied to a pixel value of an image signal of each channel, whereby an enhancement of color occurs in an image based on the image signal, the image signal in which a portion where the enhancement of color occurs is corrected for each channel is output based on a color-difference component separated from the result of multiplication of the linear matrix coefficient to the pixel value for each channel and a luminance calculated from the result.
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6. An imaging apparatus comprising:
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an imaging device that photoelectrically converts incident light entering an imaging surface through an optical system to output an image signal; a linear matrix operation unit that multiplies a linear matrix gain using a linear matrix coefficient with a pixel value of the image signal of each channel; and an enhancement countermeasure unit in which when an enhancement of color occurs in an image based on the image signal due to multiplication of the linear matrix gain, the image signal in which a portion where the enhancement of color occurs is corrected for each channel is output based on a color-difference component separated from the result of multiplication of the linear matrix coefficient to the pixel value for each channel and a luminance calculated from the result.
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7. An imaging processing method comprising:
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multiplying a linear matrix gain using a linear matrix coefficient with a pixel value of the image signal of each channel; and when an enhancement of color occurs in an image based on the image signal due to multiplication of the linear matrix gain, outputting the image signal in which a portion where the enhancement of color occurs is corrected for each channel based on a color-difference component separated from the result of multiplication of the linear matrix coefficient to the pixel value for each channel and a luminance calculated from the result.
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Specification