Image data processing method for compressing an image by approxi

Details Image data processing method for compressing an image by approxi Image data processing method for compressing an image by approxi

1991-09-30

1992-05-19

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

340735, 395142, 395150, G06K 946

Patent

active

051154790

ABSTRACT:
A method of processing an image data of a two-dimensional curve comprises steps of detecting an initial point of the curve as a first vector data, detecting a terminal point of the curve as a second vector data, detecting a tangential in contact with the curve, detecting an initial point of the tangential defined as an intersection of the first mentioned tangential and another tangential of the curve passing through the initial point of the curve as a third vector data, detecting a terminal point of the first mentioned tangential and still another tangential of the curve passing through the terminal point of the curve as a fourth vector data, and reproducing the curve by a polynomial defined by

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patent: 4620287 (1986-10-01), Yam
patent: 4674058 (1987-06-01), Lindbloom et al.
patent: 4907282 (1990-03-01), Daly et al.
patent: 4943935 (1990-07-01), Sato

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