Image signal padding method, image signal coding apparatus, imag

Details Image signal padding method, image signal coding apparatus, imag Image signal padding method, image signal coding apparatus, imag

1997-10-23

2000-06-20

Couso, Jose L.

Image analysis

Image compression or coding

Predictive coding

382232, 382236, G06K 936

Patent

active

060786949

ABSTRACT:
A method of padding an image signal comprising dividing an image signal of an object into plural regions; processing the plural regions in a prescribed processing order; padding an insignificant region with a padding value obtained by a prescribed method; which region abuts a boundary region including a boundary of the object, and is composed of insignificant pixels; and generating additional information with reference to significant signals showing whether significant pixels are included, for each of the plural regions, by a prescribed method, which additional information is referred to when the pixel values of pixels in the plural regions are padded. Both the boundary region and the insignificant region adjacent to the boundary region are padded, and region by region padding is performed using the additional information. Therefore, when the image is encoded or decoded, a prediction signal with less difference can be obtained even for an image of great motion, whereby the delay time and the arithmetic amount in the coding and decoding processes are significantly reduced.

REFERENCES:
patent: 5608458 (1997-03-01), Chen et al.
Video Group, International Organisation for Standardisation, MPEG4 Video Verification Model VM 8.0, Jul. 1997, pp. 1-283, and attachment pp. 1-20.

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