Image analysis – Histogram processing – For setting a threshold
Patent
1988-09-09
1991-04-16
Razavi, Michael
Image analysis
Histogram processing
For setting a threshold
382 23, 382 24, 434 43, 180271, 180167, G06K 900
Patent
active
050089463
ABSTRACT:
There is disclosed a system which permits an automobile driver to control electrical devices installed on an automobile by moving his or her pupils and mouth intentionally. The system includes a TV camera, a light, a first microprocessor which controls the electrical devices according to the changes in the shape of the driver's mouth, a second microprocessor for performing various arithmetic operations, and memories. Reference values have been previously assigned to various elements of the driver's face and stored in one of the memories. The second microprocessor normalizes the distances between the elements of the face with the distance between the pupils of the eyes and compares the normalized distances with the reference values to calculate the degrees of similarity of the elements.
REFERENCES:
patent: 3638188 (1972-01-01), Pincoffs et al.
patent: 4281734 (1981-08-01), Johnston
patent: 4479784 (1984-10-01), Mallinson et al.
patent: 4625329 (1986-11-01), Ishikawa et al.
Nakasi Honda et al., Multivariate Data Representation and Analysis by Face Pattern Using Facial Expression Characteristics, 6-1985, 85-93.
Aisin Seiki K.K.
Razavi Michael
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