发明名称 |
Detection of repeated and frozen frames in a video signal |
摘要 |
<p>An apparatus and method for the detection of repeated and frozen frames in a video signal obtains the absolute differences between pixels in corresponding fields of consecutive frames and generates a logic bit-map based on a threshold that is related to a maximum absolute difference for the field. The logic "1"s in the logic bit-map are counted to determine a normalized distribution count for the field and to determine an actual count in each of a plurality of segments of the logic bit-map. The actual counts are compared with bounds generated from the normalized distribution count and, if all the actual counts for the field are within the bounds, a repeated frame is reported. Alternatively in the absence of noise the actual counts are compared with a minimum value and, if all of the actual counts are below the minimum value, a repeated frame is reported. <IMAGE></p> |
申请公布号 |
EP1107604(A2) |
申请公布日期 |
2001.06.13 |
申请号 |
EP20000310542 |
申请日期 |
2000.11.28 |
申请人 |
TEKTRONIX, INC. |
发明人 |
JANKO, BOZIDAR;PATEL, KAMALESH |
分类号 |
H04N19/89;(IPC1-7):H04N7/26 |
主分类号 |
H04N19/89 |
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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