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Moving estimating device and method for reference macro block window in scanning search area

A macroblock and reference frame technology, applied in computing, color TV components, TV system components, etc., can solve problems such as not being suitable for mobile environments, increasing the time to export motion vectors, increasing energy consumption, etc.

Inactive Publication Date: 2003-02-12
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This large number of memory accesses increases the amount of time required to derive motion vectors and increases energy consumption
[0013] Due to the large number of memory accesses and the accompanying large energy consumption, these traditional motion estimation methods are not suitable for the mobile environment

Method used

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  • Moving estimating device and method for reference macro block window in scanning search area
  • Moving estimating device and method for reference macro block window in scanning search area
  • Moving estimating device and method for reference macro block window in scanning search area

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Embodiment Construction

[0029] The present invention provides efficient motion estimation with reduced number of memory accesses by multiplexing common registers when scanning reference MBs in a search area. .

[0030] Figure 4 is a block diagram of the motion estimation system of the preferred embodiment of the present invention. The motion estimation system includes a current frame (C / F) 100 , a first register set 102 , a difference calculation unit 110 , a search area (S / A) 104 , a second register set 106 , and a controller 108 . The first and second register sets 102 and 106 store pixels for one macroblock (MB) of the current frame 100 and one MB of the search area 104, respectively. In one example, a MB is 16x16 pixels in size. Each of the first and second register sets 102 and 106 can store an array of 16x16 pixels. The controller 108 can be constructed with software or hardware.

[0031] Figure 5 A preprocessing step implemented using a 4:1 decimation filter is illustrated. At current...

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Abstract

A motion estimation technique compares a current macroblock with different reference macroblocks in a reference frame search area. A motion vector for the current macroblock is derived from the reference macroblock most closely matching the current macroblock. To reduce the number of instructions required to load new reference macroblocks, overlapping portions between reference macroblocks are reused and only nonoverlapping portions are loaded into a memory storage device.

Description

technical field [0001] The present invention relates to a motion estimation device and method. More particularly, the present invention relates to motion estimation apparatus and methods for scanning a window of reference macroblocks within a search area. Background technique [0002] This application claims priority from Korean Patent Application No. 2001-40904 filed on July 9, 2001, the contents of which are hereby incorporated by reference in their entirety. [0003] The video encoder generates a bitstream that complies with international standards for video compression, such as H.261, H.263, MPEG-1, MPEG-2, MPEG-4, MPEG-7, and MPEG-21. These standards are widely used in data storage, Internet-based image services, entertainment, digital broadcasting, portable video terminals and other fields. [0004] Video compression standards use motion estimation techniques that divide the current frame into macroblocks (MBs). The difference between the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/50H03M7/36H04N19/105H04N19/136H04N19/176H04N19/196H04N19/423H04N19/503H04N19/51H04N19/513H04N19/57H04N19/80
CPCH04N19/00781H04N19/00484H04N19/00515H04N19/00587H04N19/423H04N19/433H04N19/51H04N19/61H04N19/43H04N19/55
Inventor 赵真显卢亨来李润泰全炳宇
Owner SAMSUNG ELECTRONICS CO LTD
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