Invention Grant
- Patent Title: Noise reduction filter processing circuit, image processing circuit, imaging device, and storage medium storing noise reduction program
- Patent Title (中): 降噪滤波处理电路，图像处理电路，成像装置和存储降噪方案的存储介质
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Application No.: US12591644Application Date: 2009-11-25
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Publication No.: US08345116B2Publication Date: 2013-01-01
- Inventor: Takashi Minagawa
- Applicant: Takashi Minagawa
- Applicant Address: JP Tokyo
- Assignee: Nikon Corporation
- Current Assignee: Nikon Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2008-309478 20081204
- Main IPC: H04N5/235
- IPC: H04N5/235 ; H04N5/217 ; H04N5/335
Abstract:
A noise reduction filter processing circuit includes a first operating part calculating first saturation information indicative of a saturation of an input image, a nonlinear processing part performing nonlinear processing on the input image, a second operating part calculating second saturation information indicative of a saturation of the input image subjected to the nonlinear processing, and a correction operating part performing a correction operation on the input image subjected to the nonlinear processing using the first saturation information and the second saturation information.
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