Image-quality adjusting apparatus, image-quality adjusting method, and display apparatus
First Claim
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1. An image-quality adjusting apparatus for adjusting image quality of a video image corresponding to a video signal by performing signal processing for the video signal, said image-quality adjusting apparatus comprising:
- a noise-level detecting device for detecting a level of noise included in the video signal;
an adjustment-value changing device for changing an image-quality adjustment value, in accordance with the noise level detected by said noise-level detecting device; and
an image-quality adjusting device for adjusting the image quality of the video image, in accordance with the image-quality adjustment value changed by said adjustment-value changing device.
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Abstract
A sharpness adjusting apparatus (20) detects the level of noise included in a video signal, for each of a plurality of frequency bands, and sets and changes a sharpness intensity value in accordance with the detected noise level, for each of the plurality of frequency bands. Then, the sharpness adjusting apparatus (20) adjusts the sharpness of a video image, in accordance with the sharpness intensity value, for each of the plurality of frequency bands.
28 Citations
13 Claims
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1. An image-quality adjusting apparatus for adjusting image quality of a video image corresponding to a video signal by performing signal processing for the video signal, said image-quality adjusting apparatus comprising:
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a noise-level detecting device for detecting a level of noise included in the video signal;
an adjustment-value changing device for changing an image-quality adjustment value, in accordance with the noise level detected by said noise-level detecting device; and
an image-quality adjusting device for adjusting the image quality of the video image, in accordance with the image-quality adjustment value changed by said adjustment-value changing device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An image-quality adjusting method of adjusting image quality of a video image corresponding to a video signal by performing signal processing for the video signal, said image-quality adjusting method comprising:
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a noise-level detecting process of detecting a level of noise included in the video signal;
an adjustment-value changing process of changing an image-quality adjustment value, in accordance with the noise level detected in said noise-level detecting process; and
an image-quality adjusting process of adjusting the image quality of the video image, in accordance with the image-quality adjustment value changed in said adjustment-value changing process.
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12. A display apparatus comprising an image-quality adjusting apparatus for adjusting image quality of a video image corresponding to a video signal by performing signal processing for the video signal, said image-quality adjusting apparatus comprising:
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a noise-level detecting device for detecting a level of noise included in the video signal;
an adjustment-value changing device for changing an image-quality adjustment value, in accordance with the noise level detected by said noise-level detecting device; and
an image-quality adjusting device for adjusting the image quality of the video image, in accordance with the image-quality adjustment value changed by said adjustment-value changing device.
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13. A computer program product in a computer-readable medium for tangibly embodying a program of instructions executable by a computer, to make the computer function as an image-quality adjusting apparatus for adjusting image quality of a video image corresponding to a video signal by performing signal processing for the video signal, said image-quality adjusting apparatus comprising:
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a noise-level detecting device for detecting a level of noise included in the video signal;
an adjustment-value changing device for changing an image-quality adjustment value, in accordance with the noise level detected by said noise-level detecting device; and
an image-quality adjusting device for adjusting the image quality of the video image, in accordance with the image-quality adjustment value changed by said adjustment-value changing device.
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Specification