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Patent Searching and Data


Title:
MOVING VECTOR DETECTOR AND MOVING VECTOR DETECTING METHOD
Document Type and Number:
Japanese Patent JP2003169335
Kind Code:
A
Abstract:

To reduce the calculation quantity required for detecting a moving vector.

The method comprises (S102) of adding data of a value 0 to a pixel block under process to obtain an expanded pixel block under process, (S103) of FFTing this block to obtain a first FFT result, (S105) of dividing the search range of similar pixel blocks in a reference picture into nine partial search range pixel blocks, (S106) of FFTing them to obtain a second FFT result, (S107) of complex-multiplying complex conjugates of one of the first and second FFT results by complex conjugates of the other, (S108) of inverse FFTing the multiplication result, (S110) of taking the sum of squares of pixel data in each candidate pixel block, (S111) of obtaining an evaluation value of the similarity of the picture block under process to the candidate pixel block based on the inverse FFT result and the sum of squares of the data in each candidate pixel block, (S112) of detecting a similar picture block, i.e., the candidate pixel block having a minimum evaluation value thereof, and (S113) of calculating the moving vector.


Inventors:
TOYOKURA MAKI
Application Number:
JP2001367163A
Publication Date:
June 13, 2003
Filing Date:
November 30, 2001
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H04N19/50; G06T7/20; H03M7/30; H03M7/36; H04N19/51; H04N19/547; H04N19/57; H04N19/583; (IPC1-7): H04N7/32; G06T7/20; H03M7/30; H03M7/36
Attorney, Agent or Firm:
Hiroshi Maeda (7 outside)