System for contracting bit map image data

Details System for contracting bit map image data System for contracting bit map image data

1994-08-18

1996-07-16

Saras, Steven

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345131, 395155, G09G 500

Patent

active

055371302

ABSTRACT:
A system for contracting bit map image data to allow interactive correction of an image that has been brought out of shape when the bit map image data are contracted at a certain magnification. The system includes a memory for storing original bit map image data and contracted bit map image data, a decimating unit for decimating from the original bit map image data dot data at decimating positions in rows and/or columns which have been determined in advance according to a given contraction ratio, a display unit for displaying the original bit map image data, decimating positions, and the contracted bit map image data, and a shift indicating unit for indicating a shift of the decimating positions while viewing the images displayed by the display unit. The system permits the operator to shift the decimating positions in an interactive manner for minimizing any loss in the contracted bit map image of major figure elements contained in the original bit map image.

REFERENCES:
patent: 4628534 (1986-12-01), Marshall
patent: 4829370 (1989-05-01), Mayne et al.
patent: 4831556 (1989-05-01), Oono
patent: 4881069 (1989-11-01), Kameda et al.
patent: 4892258 (1990-01-01), Sakuragi
patent: 5172103 (1992-12-01), Kita
patent: 5239287 (1993-08-01), Siio et al.

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