发明名称 |
FRAME LEVEL QUANTIZATION ESTIMATION |
摘要 |
A frame level noise estimate for an image can be determined. An image processor includes a high pass filter unit configured to perform high-pass spatial filtering of image data for first and second frames to produce high-pass spatially filtered information for the first frame and the second frame. A cumulative histogram generator is configured to analyze the high-pass spatially filtered information for the first frame and the second frame to produce a first cumulative histogram for the first frame and a second cumulative histogram for the second frame. A comparator is configured to determine a difference value between the first and second cumulative histograms. A mapping unit is configured to determine an estimated noise value based on the difference value.
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申请公布号 |
US2012133836(A1) |
申请公布日期 |
2012.05.31 |
申请号 |
US20100955188 |
申请日期 |
2010.11.29 |
申请人 |
RAFFALLI ANNA;WANG HAIYUN;HUI LUCAS;STMICROELECTRONICS ASIA PACIFIC PTE. LTD. |
发明人 |
RAFFALLI ANNA;WANG HAIYUN;HUI LUCAS |
分类号 |
H04N5/21 |
主分类号 |
H04N5/21 |
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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