ADAPTIVE FILTERING

摘要

An adaptive filter having multiple filter parameters is determined by defining at least one filter parameter as having a first level of adaptivity and defining at least one other filter parameter as having a second, different level of adaptivity. The parameter values for the at least one filter parameter having the first level of adaptivity are determined among a first set of allowable filter parameter values. The parameter values for the at least one filter parameter having the second level of adaptivity are correspondingly determined among a second, different set of allowable filter parameter values. The different levels of adaptivity in the filter parameters of the adaptive filter are achieved as the second set comprises more allowable filter parameter values than the first set. The adaptive filter is advantageously used in filtering in intra or inter predication during video encoding and decoding.