Patent Document ID: 9721331
Application ID: 14471092
Patent Status: 1

Claim One:
1. A digital filter for image processing, the digital filter comprising: a decomposing unit that performs multiresolution decomposition, which includes a decomposition phase and a synthesis phase, on image data by using a broad-sense pinwheel framelet that is a set of an approximate filter with no orientation and a plurality of detail filters with respective orientations, and that has a degree, and obtains subband signals output from the synthesis phase; and a reconstructing unit that obtains reconstructed image data by reconstructing an image by summing the subband signals obtained by the decomposing unit; wherein the reconstructing unit generates the reconstructed image data by summing the subband signals after attenuating or amplifying a subband signal, which is output from the synthesis phase, corresponding to at least one of filters that have predetermined frequency characteristics and/or a predetermined orientation among the filters.