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Device and method for searching motion vector

A motion vector and motion vector search technology, applied in the field of motion vector search devices, can solve problems such as large processing capacity

Inactive Publication Date: 2004-07-14
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] As a second problem, the MV search operation in moving image coding requires a very large amount of processing

Method used

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  • Device and method for searching motion vector
  • Device and method for searching motion vector
  • Device and method for searching motion vector

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Embodiment Construction

[0033] Now, embodiments of the present invention will be described with reference to the drawings.

[0034] Referring to FIG. 3 and FIG. 4, a motion vector search apparatus according to a first embodiment of the present invention will be described.

[0035] First, this embodiment will be briefly described.

[0036] Referring to FIG. 3, the motion vector searching means includes a motion vector searching section (101-110) supplied with an input image signal representing successive images. A motion vector search section (101-110) for dividing each image of the input image signal into macroblocks (MB), and for searching each block of each image in a search area of ​​the input image signal for each block of each image The motion vector (MV) of is used as the search motion vector.

[0037] The motion vector search device also includes an MV state storage section 112 , an MV learning section 113 and an MV search area determination section 114 . The MV state storage section 112 st...

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Abstract

In a motion vector searching device which includes a motion vector searching portion (101-110) supplied with an input picture signal representative of a succession of pictures for dividing each of the pictures of the input picture signal into blocks and for searching for a motion vector as a searched motion vector for each of the blocks of each of the pictures in a search area of the input picture signal for each of the blocks of each of the pictures, a learning portion (113, 313) learns tendencies of the searched motion vectors for previous pictures previous to a current picture of the pictures of the input picture signal to produce tendency information representative of the tendencies. A determining portion (114) determines the search area for each of the blocks of the current picture on the basis of the tendency information to cause the motion vector searching portion to search for the motion vector as the searched motion vector for each of the blocks of the current picture in the search area for each of the blocks of the current picture.

Description

technical field [0001] The present invention relates to a motion vector searching device and a motion vector searching method, which are generally used for searching a motion vector in an input image when encoding a moving image. The present invention also relates to a recording medium recording a program for executing the motion vector search method. Background technique [0002] In the traditional method, moving image coding is used to compress the data volume of a moving image, by dividing an input moving image into a plurality of small blocks (macroblocks, hereinafter referred to as MB), and searching for objects representing an object relative to each other in a macroblock. Motion vectors (hereinafter referred to as MV) based on the movement of a past or future image, and use the MV information to delete the temporal redundancy of the moving image. Each MB typically has 16x16 pixels. [0003] Referring to Fig. 1, a related motion vector search device will be described...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/50H03M7/36H04N19/423H04N19/503H04N19/51H04N19/57
CPCH04N7/26765H04N19/0066H04N19/00587H04N7/2684H04N19/51H04N19/56H04N19/176
Inventor 长崎真由美
Owner NEC CORP