发明名称 |
TECHNIQUE FOR SIMULATING FILM GRAIN USING FREQUENCY FILTERING |
摘要 |
<p>Simulation of film grain in an image can occur by compressing a video image, then transmitting compressed video together with a message containing at least one parameter indicative of the original film grain, to a decoder, and restoring the original grainy appearance of images by having the decoder simulating film grain based on the content of the film grain message. To improve efficiency, one or more parameters of film grain information undergo scaling in accordance with a target pixel block size for pixel blocks in the image. Such scaling allows for the use of conventional circuitry for performing block-based operations in connection with the film grain simulation.</p> |
申请公布号 |
WO2005032143(A9) |
申请公布日期 |
2005.10.13 |
申请号 |
WO2004US30950 |
申请日期 |
2004.09.22 |
申请人 |
THOMSON LICENSING S.A.;LLACH, JOAN;BOYCE, JILL, MACDONALD;TOURAPIS, ALEXANDROS |
发明人 |
LLACH, JOAN;BOYCE, JILL, MACDONALD;TOURAPIS, ALEXANDROS |
分类号 |
G06T5/00;G06T11/00;H04N5/262;H04N7/26;(IPC1-7):H04N7/26 |
主分类号 |
G06T5/00 |
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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