IMAGE NOISE REMOVAL METHOD AND IMAGE NOISE REMOVAL DEVICE,申请号JP20100291603-传众专利搜索

IMAGE NOISE REMOVAL METHOD AND IMAGE NOISE REMOVAL DEVICE

申请公布号：JP2012138043(A)

申请号：JP20100291603

申请日期：2010.12.28

申请公布日期：2012.07.19

申请人：

JVC KENWOOD CORP

发明人：SATO MAKI

分类号：G06T5/00;H04N1/409;H04N5/21

主分类号：G06T5/00

摘要：<P>PROBLEM TO BE SOLVED: To obtain an excellent noise-removed image by responding to a change in a luminance distribution of an image itself to improve reproducibility of a luminance change existing in a dark part of the image. <P>SOLUTION: A norm first variation calculation unit 12 sets an image norm that responds to a local luminance change defined as noise in a target image, and calculates a norm first variation as a noise suppression term of the image norm for each pixel. A luminance average value calculation unit 13 calculates a luminance average value of a processing target pixel and peripheral pixels thereof in the target image. An &epsi; calculation unit 14 calculates an adjustment parameter &epsi; for setting a degree of noise suppression due to the norm first variation to a value corresponding to the luminance average value. A multiplication unit 15 multiplies the norm first variation by the adjustment parameter &epsi;. An addition unit 16 adds the processing target pixel to a multiplication result to generate noise-removed processing target pixel data. <P>COPYRIGHT: (C)2012,JPO&INPIT