Motion vector detection apparatus and motion vector detection method
A technology of motion vector and detection equipment, which is applied in the direction of TV, electrical components, image communication, etc., and can solve the problems of shortened duration, long time consumption, and increased power consumption, etc.
Inactive Publication Date: 2008-02-13
CANON KK
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Therefore, it takes a long time to encode the image
[0015] Also, in the case of mobile devices such as video c
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A motion vector detection apparatus is configured to calculate a temporal distance between a frame to be coded and each of a plurality of reference candidate frames referred to by the frame to be coded. The motion vector detection apparatus searches for a candidate motion vector between the frame to be coded and each the plurality of reference candidate frames and detects a motion vector for the frame to be coded from the candidate motion vectors. In searching for and detecting a candidate motion vector, the motion vector detection apparatus changes an amount of the calculation performed during the detection of a candidate motion vector according to the calculated temporal distance between the frame to be coded and the reference candidate frame, and a coding type of the reference candidate frame.
Description
technical field [0001] The present invention relates to a motion vector detecting device and a motion vector detecting method, and more particularly, the present invention relates to a method for detecting a motion vector between pictures. Background technique [0002] In recent years, digitized information has been widely used in multimedia products. With the widespread use of digital information, high-quality images are required in the field of video broadcasting. For example, broadcast media is currently transitioning from a legacy standard definition (SD) system of 720 x 480 pixels to a high definition (HD) system of 1,920 x 1,080 pixels. [0003] As the demand for high-quality images in video broadcasting increases, the amount of digital data is growing. Therefore, more advanced compression encoding and decoding than conventional methods are required. [0004] Faced with this demand, ITU Telecommunication Standardization Sector Study Group 16 (ITU-T SG16) and ISO / IEC...
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Login to view more IPC IPC(8): H04N7/26H04N19/50H04N19/105H04N19/134H04N19/136H04N19/176H04N19/503H04N19/51H04N19/57H04N19/577H04N19/593H04N19/60H04N19/61H04N19/91
Inventor 坂本大辅
Owner CANON KK
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