Method of determining desired image signal range

Details Method of determining desired image signal range Method of determining desired image signal range

1988-08-22

1990-02-27

Jablon, Clark A.

Boots, shoes, and leggings

G06F 1568, G06F 1562, G03B 4202, A61B 600

Patent

active

049051490

ABSTRACT:
In order to determine a desired image signal range in image signals carrying an image having an object image portion and a pair of empty image portions separated by the object image portion, the image signals carrying the image are binary-coded into object image portion corresponding signals and empty image portion corresponding signals on the basis of a predetermined threshold value, and a binary-coded image consisting of an object image portion corresponding part carried by the object image portion corresponding signals and two empty image portion corresponding parts carried by the empty image portion corresponding signals and separated by the object image portion corresponding part is formed. The binary-coding step and the binary-coded image forming step are repeated while the value of the predetermined threshold is gradually lowered until the two empty image portion corresponding parts are united into a united empty image portion corresponding part, and the desired image signal range is determined on the basis of the image signals carrying the picture elements included in the united empty image portion corresponding part at the time the two empty image portion corresponding parts are united.

REFERENCES:
patent: 4527060 (1985-07-01), Suzuki et al.
patent: 4682028 (1987-07-01), Tanaka et al.
patent: 4804842 (1989-02-01), Nakajima

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