Title:
【発明の名称】雑音減少方法及びその回路
Document Type and Number:
Japanese Patent JP2951619
Kind Code:
B2
Abstract:
A noise reduction method and circuit determines the presence of an impulse component in a current input sample by generating two windows of different size and detecting the impulse component in the two respective windows in order to prevent degradation of an input image signal due to an erroneous detection. If the impulse component is not detected in the sample, the sample is bypassed. However, if the impulse component is detected, the sample is trimmed by a trimmed mean filter and then output.
More Like This:
| JPH088653 | [Title of Invention] Digital Image Processing Device |
| JP2006237716 | IMAGE PROCESSOR |
Inventors:
KIN NAGASAWA
Application Number:
JP9600397A
Publication Date:
September 20, 1999
Filing Date:
April 14, 1997
Export Citation:
Assignee:
SANSEI DENSHI KK
International Classes:
H04N5/21; H04N5/213; (IPC1-7): H04N5/21
Attorney, Agent or Firm:
Tadahiko Ito (1 outside)