Image processing device and method

Abstract

This image processing device and method are capable of improving the encoding efficiency of a motion vector. When a motion estimation is made for an image, a time estimation motion vector information determination unit determines a retrieval region for retrieving motion vector information as time estimation motion vector information, from within a reference region corresponding to the region to be subjected to processing in a reference image. A difference motion vector generation unit generates the time estimation motion vector information retrieved from the determined retrieval region, and generates difference motion information constituting the difference of the motion information in the region. The reference region is divided into a plurality of divided regions. The time estimation motion vector information determination unit determines, as the retrieval region, the largest region where the maximum area overlaps with the region, from among the plurality of divided regions in the reference region. This feature can be applied to an image processing device.

Description

technical field [0001] The technology relates to an image processing device and method, in particular to an image processing device and method that can improve the efficiency of motion vector coding. Background technique [0002] In recent years, devices conforming to the MPEG (Moving Picture Experts Group) scheme, etc., which utilize redundancy unique to image information in order to efficiently transmit and store information, have become popular in broadcasting stations that distribute information and ordinary households that receive information. At the same time, the image information is regarded as digital and the information is compressed through orthogonal transformations such as discrete cosine transform and motion compensation. [0003] In particular, MPEG-2 (ISO (International Organization for Standardization) / IEC (International Electrotechnical Commission) 13818-2) is defined as a general-purpose image coding scheme that covers interlaced images and progressive ima...

AI Technical Summary

Problems solved by technology

[0006] However, it is of concern that the macroblock size of 16 pixels by 16 pixels is not optimal for the large image frames provided in UHD (Ultra High Definition; 4000 pixels by 2000 pixels), which will be the target of next-generation coding schemes

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