Accession Number:

ADD010948

Title:

Sobel Edge Extraction Circuit for Image Processing.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

• Couturier,G. D.

Report Date:

1984-02-21

Pagination or Media Count:

8.0

Abstract:

The Sobel square root algorithm Sa2bc-g2fe2a2Hg-c2-desquared, with 8-bit input data from a 3x3 window and 6-bit output is performed on a single VLSI chip, using a square table only 128x13 and a square root table only 1027 or 1032x6 in ROM. The random logic including adders and clock circuits are also on the same chip with the ROM tables. Author

Descriptors:

• *Patents
• *Image processing
• *Tables(Data)
• *Logic circuits
• *Digital systems
• *Pattern recognition
• Algorithms
• Circuit analysis
• Multiplexing
• Integrated circuits
• Chips(Electronics)
• Edges
• Read only memories
• Extraction
• Output
• Circuits
• Input
• Clocks
• Logic

Subject Categories:

• Electrical and Electronic Equipment
• Theoretical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE