SCENE CHANGE DETECTION DEVICE AND VIDEO RECORDER

SCENE CHANGE DETECTION DEVICE AND VIDEO RECORDER

A SCENE CHANGE DETECTION DEVICE CAPABLE OF DETECTING A SCENE CHANGE RAPIDLY FROM A STREAM CODED USING SUCH A CODING SCHEME THAT CARRIES OUT PREDICTION CODING USING DECODED PIXELS. AN ENTROPY DECODING SECTION 31 PERFORMS ENTROPY DECODING OF PREDICTION MODES FROM THE CODED STREAM. AN INTRA-PREDICTION...

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Hauptverfasser: YOSHIMI MORIYA, YUICHI IDEHARA, SHUNICHI SEKIGUCHI
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator YOSHIMI MORIYA
YUICHI IDEHARA
SHUNICHI SEKIGUCHI
description A SCENE CHANGE DETECTION DEVICE CAPABLE OF DETECTING A SCENE CHANGE RAPIDLY FROM A STREAM CODED USING SUCH A CODING SCHEME THAT CARRIES OUT PREDICTION CODING USING DECODED PIXELS. AN ENTROPY DECODING SECTION 31 PERFORMS ENTROPY DECODING OF PREDICTION MODES FROM THE CODED STREAM. AN INTRA-PREDICTION MODE HISTOGRAM DIFFERENCE GENERATING SECTION 32 ACQUIRES THE PREDICTION MODES PASSING THROUGH THE ENTROPY DECODING BY THE AMOUNT CORRESPONDING TO MULTIPLE BLOCKS WITHIN A SINGLE PICTURE TO GENERATE A HISTOGRAM, AND COMPARES THE HISTOGRAMS OF THE PREDICTION MODES GENERATED FOR INDIVIDUAL PICTURES TO CALCULATE THE DEGREE OF SIMILARITY BETWEEN THE HISTOGRAMS. A SCENE CHANGE DECIDING SECTION 33 DECIDES AS TO WHETHER A SCENE CHANGE OCCURS BETWEEN THE PICTURES FROM THE DEGREE OF SIMILARITY OBTAINED BY THE INTRA-PREDICTION MODE HISTOGRAM DIFFERENCE GENERATING SECTION 32.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
title SCENE CHANGE DETECTION DEVICE AND VIDEO RECORDER
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