Hitachi, Ltd.

Takashi Kanehachi

Mitsuo Nakajima

Takaaki Matono

Yasutaka Tsuru

Masato Sugiyama

Haruki Takata

Kazuo Ishikura

Yasuhiro Hirano

The present invention provides a movement correction frame count transformation apparatus for carrying out frame count transformation processing on a picture signal. In the apparatus, an input picture signal (S ) of interlaced scanning is converted into a signal (S ) of sequential scanning by an IP conversion unit ( ). A movement detecting unit ( ) detects movement detection signals (MD and MD ). A block unit movement vector searching unit ( ) detects a block unit movement vector (BMV) by carrying out block matching processing. A movement vector correcting unit ( ) carries out miniblock division processing to generate a movement vector (BV) if a movement correction error is equal to or greater than a threshold value. A pixel unit movement vector generating unit ( ) generates a movement vector with a smallest error component between a frame signal of a current frame and a frame signal of an immediately preceding frame as a movement vector of a pixel. An MC interpolation frame signal generating unit ( ) generates an interpolation frame in movement correction processing carried out by a median filter in order to produce a signal (S ) of sequential scanning as a result of frame count transformation based on movement correction.

Method and device for converting number of frames of image signals

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Yokohama, Japan

Takashi Kanehachi