Process and apparatus for providing data indicative of the shape

Details Process and apparatus for providing data indicative of the shape Process and apparatus for providing data indicative of the shape

1980-04-03

1982-04-27

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358106, 356237, H04N 718

Patent

active

043273750

ABSTRACT:
Process and apparatus for providing digital data indicative of the contour of a leaf-like article, e.g. a tobacco leaf, and the flaws (holes) that it may comprise, from a video signal composed of image lines. The video signal is coded by comparing same with thresholds so as to detect transitions. The number n of points pertaining to a hole is compared with a threshold n.sub.1, firstly within a line X, then in successive lines X, X+1, and the code is converted to "flaw" when n.gtoreq.n.sub.1. Only when they precede a transition, the coded signals are stored in a memory in the order of appearance of the lines. The stored signals are readout in the opposite order, whereby all the codes pertaining to a given flaw can be rendered uniform and the codes pertaining to unsignificant flaws can be suppressed.

REFERENCES:
patent: 4079416 (1978-03-01), Faami et al.

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