Image processor having a partial image preprocessor

Details Image processor having a partial image preprocessor Image processor having a partial image preprocessor

1996-10-22

1999-07-20

Lee, Thomas D.

Image analysis

Image enhancement or restoration

Edge or contour enhancement

382260, G06K 940

Patent

active

059265787

ABSTRACT:
Overall actual image data is divided into tiles, spatial frequency distribution states of respective tiles are analyzed, and three extracted images including an image (95A) having the maximum number of high frequency components, an image (95C) having the minimum number of high frequency components and an image (95B) including the intermediate number of high frequency components are displayed on an extracted image display screen (91B). When a user inputs candidate values for contour enhancement processing parameters as to the three extracted images, contour enhancement processing is performed on the respective extracted images in response to this. When the candidate values for the parameters are ascertained, contour enhancement processing is performed on the overall actual image in response to this, and the image is displayed on a display box (51). Thus, an image processor having a short contour enhancement processing time with excellent sharpness tuning efficiency is provided.

REFERENCES:
patent: 4794531 (1988-12-01), Morishita et al.
patent: 4987602 (1991-01-01), Brunner et al.
patent: 5128879 (1992-07-01), Greve et al.
patent: 5343390 (1994-08-01), Doi et al.
patent: 5454044 (1995-09-01), Nakajima
patent: 5454053 (1995-09-01), Okubo et al.
patent: 5524162 (1996-06-01), Levien

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