Image edge sensor

Details Image edge sensor Image edge sensor

1992-06-30

1994-09-27

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 66, 382 67, 250202, 2502081, G06K 948, G06K 920

Patent

active

053513096

ABSTRACT:
An image sensor comprised of an array of photo-sensing devices is devised to generate digital images of objects. Each photo-sensing device consists of four identically shaped photo-sensitive surfaces, each photo-sensing surface being shaped into an isosceles trapezoid having 45.degree. base angles. One photo-sensing device corresponds to one pixel of the digital image. Pixels that representing image edges can be directly located and orientations of image edges represented by those pixels can both be determined by arithmetically processing the values of electrical signals generated by the photo-detecting devices.

REFERENCES:
patent: 5144684 (1992-09-01), Inada et al.
Sah et al., "Amorphous Siicon Four Quadrant Orientation Detector (FOQUOD) for Application to Neural Network Image Sensors," IEEE (1990).

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