Pattern-matching sheet-joining machine

Details Pattern-matching sheet-joining machine Pattern-matching sheet-joining machine

1989-01-27

1991-01-08

Nerbun, Peter

Sewing

Stitch forming

Feeding work material

11212111, 112320, 226 32, 356425, D05B 2706, D05B 2708

Patent

active

049826778

ABSTRACT:
A pattern-matching joining machine for joining two sheets (e.g., sewing two cloths) having the same patterns with the patterns matching. The pattern-sensing photo-sensor generates intensity data for three different colors and the color data processed to correctly discriminate elements of a pattern having colors of similar brightnesses, and to accurately pick out pattern elements with faint colors from behind outstanding pattern elements. One way of processing the data includes calculating differences between intensity data for different colors. Another way includes selecting the color that has the largest intensity change.

REFERENCES:
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patent: 4612867 (1986-09-01), Rosch et al.
patent: 4652136 (1987-03-01), Harjunmaa
patent: 4766828 (1988-08-01), Nomura et al.
patent: 4777896 (1988-10-01), Nomura
patent: 4788650 (1988-11-01), Willis et al.
patent: 4901659 (1990-02-01), Nomura et al.

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