发明名称 |
Image processing apparatus and image processing method |
摘要 |
An image processing apparatus includes a gradation correction unit configured to multiply input image data by a gradation correction value appropriate for the input image data so as to obtain gradation corrected image data; and a noise suppression unit configured to suppress noise of the gradation corrected image data on the basis of a noise model of the input image data to obtain output image data. The noise suppression unit includes a parameter generator configured to generate a noise suppression parameter in accordance with the gradation corrected image data by using the noise model; a parameter correction unit configured to multiply the noise suppression parameter by the gradation correction value to correct the noise suppression parameter; and a low-pass filter configured to vary characteristics thereof in accordance with the noise suppression parameter corrected by the parameter correction unit and to suppress noise of the gradation corrected image data.
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申请公布号 |
US8081239(B2) |
申请公布日期 |
2011.12.20 |
申请号 |
US20080290229 |
申请日期 |
2008.10.28 |
申请人 |
ZHANG JING;INABA SEIJIRO;CHIBA TAKUYA;SONY CORPORATION |
发明人 |
ZHANG JING;INABA SEIJIRO;CHIBA TAKUYA |
分类号 |
H04N5/217;G06T1/00;G06T5/00;H04N1/409;H04N1/46;H04N1/60;H04N5/202;H04N5/238;H04N101/00 |
主分类号 |
H04N5/217 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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