04794531 is referenced by 77 patents and cites 1 patents.

In an unsharp masking processing for sharpening images such as radiographic images, an emphasizing coefficient of an image and parameters for real-time change of picture quality are set interactively. The entire image is divided into a plurality of regional images and filtering optimized for each pixel image is effected using a standard deviation computed for each regional image and a density difference between pixel images.

Title
Unsharp masking for image enhancement
Application Number
795461
Publication Number
4794531
Application Date
April 22, 1987
Publication Date
December 27, 1988
Inventor
Kazuhiko Hamatani
Tokyo
JP
Tetsuo Yokoyama
Tokyo
JP
Tetsuo Okabe
Kashiwa
JP
Shimbu Yamagata
Yokohama
JP
Koichi Morishita
Kawasaki
JP
Agent
Antonelli Terry & Wands
Assignee
Hitachi Medical Corporation
JP
Hitachi
JP
IPC
G06F 15/68
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