发明名称 |
Segmentierungsverfahren von beweglichen elektronischen Bildern in Beziehung auf die Bewegung von Bildblöcken mit Konturerkennungsverfahren. |
摘要 |
The field of the invention is that of the analysis and coding of electronic image sequences. The objective is to furnish such a process which determines the speed of displacement of the contour, in an image, and especially contours with translational displacement, intended to be inserted in an image-segmentation process allowing a compression of the image signal without psychovisual degradation of the reconstructed image. This objective is in particular achieved with the aid of a process of image segmentation into blocks with single speed of displacement vector, characterised in that it comprises a process (13) for detecting a contour in each of the said image blocks, and in that the said speed-representing vector allocated (17) to a block possessing a single predominant contour is the speed of displacement vector of the said contour. Advantageously, the speed representing vector is chosen from a set of n vectors, previously chosen (15) as being the most representative of the current image. A preferential application is to be found in TVHD image compression for transmission through MAC channel. <IMAGE> |
申请公布号 |
DE68923830(T2) |
申请公布日期 |
1996.04.18 |
申请号 |
DE1989623830T |
申请日期 |
1989.06.22 |
申请人 |
FRANCE TELECOM, PARIS, FR;TELEDIFFUSION DE FRANCE S.A., MONTROUGE, FR |
发明人 |
CHOQUET, BRUNO, F-35000 RENNES, FR;PELE, DANIELE, F-35000 RENNES, FR |
分类号 |
G06T7/20;H04N7/26;H04N7/46 |
主分类号 |
G06T7/20 |
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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