Title :
A novel angle position detector for application to pattern recognition
Author :
Kang-Cheng Lin ; Si-Chen Lee
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Simulating the function of biological retina using electronic hardware is the future trend for intelligent electronics. It is believed that the first three features that a biological visual system extracts from an object image are edge position, edge orientation and angle position. The contrast edge position of an object and its orientation with respect to the horizontal line can be measured from the active hollow FOur QUadrant Orientation Detector (FOQUOD). Based on this device, a double FOQUOD device which can extract the angle position is proposed for the first time and has been fabricated successfully. The a-Si:H angle position detector is composed of two hollow FOQUODs packed in a concentric fashion and each FOQUOD consists of four a-Si:H p-i-n solar cells.
Keywords :
amorphous semiconductors; angular measurement; edge detection; elemental semiconductors; image recognition; image sensors; position measurement; silicon; Si:H; a-Si:H p-i-n solar cells; active hollow four quadrant orientation detector; angle position detector; contrast edge; double FOQUOD device; electronic hardware; intelligent electronics; pattern recognition; visual system; Biological system modeling; Detectors; Hardware; Image edge detection; Object detection; PIN photodiodes; Photovoltaic cells; Position measurement; Retina; Visual system;
Conference_Titel :
Device Research Conference, 1995. Digest. 1995 53rd Annual
Conference_Location :
Charlottesville, VA, USA
Print_ISBN :
0-7803-2788-8
DOI :
10.1109/DRC.1995.496274
