Image analysis – Histogram processing – For setting a threshold
Patent
1987-11-04
1990-03-27
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 44, 358109, 358105, G06K 900
Patent
active
049127705
ABSTRACT:
A method of detecting a change using an image includes an image inputting section, an image registration processing section, a binarization processing section and an image display section. In this method, images taken at different times are input, and any change in corresponding pixels in the input images are detected. The change detecting method includes a step of calculating differences in vectors of a plurality of images which are based on different image characteristics, and a step of extracting values of shape features of an object, so that the direction in the change that takes place in the image characteristics of the object is calculated for each image characteristic being observed, shape feature values of the object are calculated, and the calculated direction and shape feature values are compared with corresponding training data, so as to detect the change in the object.
REFERENCES:
patent: 4227211 (1980-10-01), Disbrow
patent: 4513438 (1985-04-01), Graham et al.
patent: 4590607 (1986-05-01), Kauth
"Manual of Remote Sensing", 2nd Edition, 1983, pp. 1612-1621.
Komura Fuminobu
Seto Youichi
Boudreau Leo H.
Hitachi , Ltd.
Jung Yon
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