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VIDEO-SIGNAL PROCESSING METHOD, PROGRAM OF VIDEO-SIGNAL PROCESSING METHOD, RECORDING MEDIUM HAVING RECORDED THEREON PROGRAM OF VIDEO-SIGNAL PROCESSING METHOD, AND VIDEO-SIGNAL PROCESSING APPARATUS
VIDEO-SIGNAL PROCESSING METHOD, PROGRAM OF VIDEO-SIGNAL PROCESSING METHOD, RECORDING MEDIUM HAVING RECORDED THEREON PROGRAM OF VIDEO-SIGNAL PROCESSING METHOD, AND VIDEO-SIGNAL PROCESSING APPARATUS
A video-signal processing method for measuring a noise level of an input video signal includes the steps of detecting an intra-field or intra-frame feature for each region that, is set in the input video signal, the intra-field or intra-frame feature representing a noise level in the input video signal within a field or frame; checking the intra-field or intra-frame feature against a noise-free-region threshold, and excluding regions with which the infra-field or intra-frame feature is less than the noise-free-region threshold from subjects of noise-level measurement; and outputting a result of noise-level measurement by statistically processing the intra-field or intra-frame features of regions remaining without being excluded.
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