Method of image transformation in a display device

Details Method of image transformation in a display device Method of image transformation in a display device

1982-02-16

1984-11-20

Martin, John C.

Image analysis

Histogram processing

For setting a threshold

382 46, 382 54, 358287, G06K 944, G06K 936, H04N 140

Patent

active

044843470

ABSTRACT:
In an image transformation method in an image display apparatus for displaying a digital image derived by transforming an original digital image, each of intensities of second picture elements including at least three points on the original digital image surrounding a first point on the original digital image, corresponding to coordinates of a first picture element on a transformed digital image is weighted by a value related to a length of at least one of two sides of a polygon which apexes are the second picture element opposing to its own second picture element and the first point, the two sides surrounding the first point, and the intensity of the first picture element is determined based on the calculated intensities of the second picture elements.

REFERENCES:
patent: 3976982 (1976-08-01), Eiselen
patent: 4155097 (1979-05-01), Lux
patent: 4365273 (1982-12-01), Yamada et al.
patent: 4381547 (1983-04-01), Ejiri
"Image Enlarging/Reducing Method" by Miyai Digest for the 20th National Congress of the Japanese Institute of Information Processing; pp. 463-464 (1979).

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