Self-adaptive kinetic estimated device and method

Abstract

A full search motion estimation part obtains a motion vector from all blocks in a predetermined search range based on a current frame and / or field and a reference frame and / or field and a prediction motion estimation part estimates a motion vector from ambient blocks about a block in which a candidate motion vector is estimated. A motion vector selection part determines a motion vector having a position value of a smallest error in comparison with a stored threshold value among the obtained and estimated motion vectors as a final motion vector. Since the full search motion estimation algorithm and the prediction motion estimation algorithm are adaptively selected, a smooth and correct motion vector reflecting an actual motion is obtainable.

Description

technical field [0001] This application claims priority from Korean Application No. 2002-9746 filed with the Korean Intellectual Property Office on February 23, 2002, the disclosure of which is hereby incorporated by reference. [0002] The present invention relates to a device for adaptive motion estimation and a method for adaptive motion estimation, in particular to a method for adaptively selecting one of the full search motion estimation method and the predictive motion estimation method and according to the adaptive selection method An adaptive motion estimation apparatus and method for estimating motion vectors. Background technique [0003] Image data with multi-dimensional characteristics has more information than general data. Large amounts of data are required to represent visual images as digitized images. In order to process, store and transmit such digital images, various transmission and storage media using Very Large Scale Integration (VLSIU) and signal pro...

AI Technical Summary

Problems solved by technology

In order for the full-search motion estimation device to estimate a smooth motion vector that reflects the actual motion, the motion vector should be obtained by reducing the block size or overlapping blocks, which leads to a problem that the calculation becomes more complicated

[0021] The predictive motion estimation algorithm estimates smooth motion vectors that reflect actual motion more accurately than the full search algorithm, but the predictive motion estimation algorithm can produce situations where the correct motion vector is not searched, resulting in the wrong motion vector being used as a candidate motion vector

In this case, because the correct motion vectors are not used, the visual effect may be worse than with the method that does not use motion information

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