Optimization of downsampling occurring before encoding images during compression

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11265563
APP PUB NO 20200120349A1
SERIAL NO

16599780

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Abstract

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The disclosure lies in the field of coding image data, scalable in image resolution, such that one or more successive downsamplings are performed from a source signal of maximal image resolution to a minimal image resolution, in order to encode a base layer (L0) corresponding to this minimal resolution, the base layer (L0) serving as a reference for one or more enhancement layers (L1, L2) to be used for decoding at a terminal having a screen of higher image resolution than the minimal image resolution. From said successive downsamplings, the base layer (L0) and the one or more enhancement layers (L1, L2) are constructed, and then an encoded bit stream is prepared in order to be transmitted, comprising data of the base layer and of the enhancement layer or layers. In particular, the downsampling step comprises the application of an adaptive low-pass filter to the image data from the downsampling.

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  • ATEME

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Parois, Ronan Rennes, FR 1 2

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