Invention Grant
- Patent Title: Hybrid error concealment method
- Patent Title (中): 混合错误隐藏方法
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Application No.: US11466497Application Date: 2006-08-23
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Publication No.: US08094730B2Publication Date: 2012-01-10
- Inventor: Chang Hoon Yim
- Applicant: Chang Hoon Yim
- Applicant Address: KR Seoul
- Assignee: Konkuk University Industrial Cooperation Corp.
- Current Assignee: Konkuk University Industrial Cooperation Corp.
- Current Assignee Address: KR Seoul
- Agent Adam Sacharoff
- Priority: KR10-2006-0001277 20060105
- Main IPC: H04N7/12
- IPC: H04N7/12

Abstract:
Disclosed herein is a hybrid error concealment method. The hybrid error concealment method of the present invention includes a first step of calculating a side match distortion, measured when a motion vector for an arbitrary intra-frame is assumed to be zero, and the intra-frame is temporally reconstructed, a second step of applying temporal error concealment when the side match distortion, calculated at the first step, is less than a predetermined low threshold value, a third step of applying spatial error concealment when the side match distortion, calculated at the first step, is greater than a predetermined high threshold value, and a fourth step of performing error concealment based on (x,y)=α·t(x,y)+β·s(x,y) when the side match distortion, calculated at the first step, exists between the low threshold value and the high threshold value. According to the present invention, the hybrid error concealment method improves PSNR performance compared to a conventional spatial error concealment algorithm used in H.264, and obtains greatly improved performance characteristics, particularly when motion is small and the value of a quantization parameter is relatively low.
Public/Granted literature
- US20070153898A1 HYBRID ERROR CONCEALMENT METHOD Public/Granted day:2007-07-05
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