Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1997-12-30
2000-11-28
Couso, Yon J.
Image analysis
Image transformation or preprocessing
Changing the image coordinates
382107, G06K 932
Patent
active
061545783
ABSTRACT:
A method for compensating a motion of a moving image after estimating said motion is provided. In the method, a triangle-patch wireframe model is formed on a present frame of the moving image, and the triangle-patch wireframe model contains apexes. The motion vectors between the apexes of the triangle-patch wireframe model and corresponding points on a previous frame of the moving image is determined. The triangle-patch wireframe model on the present frame is transformed to form a transformed triangle-patch wireframe model on the previous frame by using the motion vectors such that the corresponding points respectively relate to secondary apexes of the transformed triangle-patch wireframe model. A first pixel value of a first pixel located at a predetermined position within the triangle-patch wireframe model of the present frame is replaced with a replacement pixel value of a second pixel located at a corresponding position within the triangle-patch wireframe model in the previous frame. Then, a new image is reconstructed using the replacement pixel value.
REFERENCES:
patent: 5117287 (1992-05-01), Koike et al.
patent: 5654771 (1997-08-01), Tekalp et al.
Super-low Bit Rate Moving Image Encoding Using Adaptive Warping Prediction, and Prediction of Non-Integral Pixel Interpolation, Technical Report of the IEICE, 96(2), pp. 33-40 (Apr. 12, 1996).
H. Li, P. Roivainen, R. Forchheimer, "3-D Motion Estimation in Model-Based Facial Image Coding", IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 15, No. 6, Jun. 1993, p. 545-555.
Kim Hak-Soo
Park Kye-ho
Couso Yon J.
Samsung Electronics Co,. Ltd.
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