US 6,611,294 B1 · Method and device for converting number of frames of image signals

Abstract

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 (S1) of interlaced scanning is converted into a signal (S2) of sequential scanning by an IP conversion unit (1). A movement detecting unit (3) detects movement detection signals (MD1 and MD2). A block unit movement vector searching unit (4) detects a block unit movement vector (BMV) by carrying out block matching processing. A movement vector correcting unit (5) 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 (6) 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 (7) generates an interpolation frame in movement correction processing carried out by a median filter in order to produce a signal (S4) of sequential scanning as a result of frame count transformation based on movement correction.

Claims20

Dependent claims

A frame count transformation method comprising the steps of:

detecting movement of a picture signal and searching for a block unit movement vector;
correcting said block unit movement vector in dependence on the magnitude of a movement correction error component of said block unit movement vector;
generating a movement vector selected on the basis of an error component between a movement correction signal of a current frame and a movement correction signal of an immediately preceding frame calculated by using said corrected block unit movement vector as a pixel unit movement vector;
and
generating a movement correction interpolation frame signal in dependence on the magnitude of an error component between a movement correction signal of a current frame and a movement correction signal of an immediately preceding frame calculated by using said pixel unit movement vector.

2 more elements

A frame count transformation apparatus comprising:

a block unit movement vector searching unit for detecting movement vector required in movement correction signal processing as a block unit movement vector;
a movement vector correcting unit for correcting said block unit movement vector in dependence on the magnitude of a movement correction error component of said block unit movement vector;
a pixel unit movement vector generating unit for generating a movement vector selected on the basis of an error component between a movement correction signal of a current frame and a movement correction signal of an immediately preceding frame calculated by using said corrected block unit movement vector as a pixel unit movement vector;
and
a movement correction interpolation frame signal generating unit for generating a movement correction interpolation frame signal in dependence on the magnitude of an error component between a movement correction signal of a current frame and a movement correction signal of an immediately preceding frame calculated by using said pixel unit movement vector.

2 more elements

An information handling home apparatus comprising:

an input unit for inputting a picture signal;
a frame count transformation unit for carrying out transformation processing on the number of frames of said picture signal by adoption of a frame count transformation method comprising:
detecting movement of a picture signal and searching for a-block unit movement vector;
correcting said block unit movement vector in dependence on the magnitude of a movement correction error component of said block unit movement vector;
generating a movement vector selected on the basis of an error component between a movement correction signal of a current frame and a movement correction signal of an immediately preceding frame calculated by using said corrected block unit movement vector as a pixel unit movement vector;
and
generating a movement correction interpolation frame signal in dependence on the magnitude of an error component between a movement correction signal of a current frame and a movement correction signal of an immediately preceding frame calculated by using said pixel unit movement vector;
and
a display unit for displaying an output of said frame count transformation unit.

6 more elements

Dependencies are inferred from the claim text.

Method and device for converting number of frames of image signals

Life of this patent

Method and device for converting number of frames of image signals

Life of this patent

Abstract

Claims20