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US 2003/0072034 A1Published application
Architecture for processing fingerprint images
AssigneeIntel Corporation
InventorsTinku Acharya, Bhargab B. Bhattacharya, Partha Bhowmick, Arijit Bishnu, Jayanta K. Dey, Malay K. Kundu, Chivukula Anjaneya Murthy
Life of this patent
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Abstract
Embodiments of an architecture for processing gray-level images is disclosed.
Claims18
An apparatus comprising:
- a processing unit;
- said processing unit having the capability to evaluate a gradient of the gray-level in a neighborhood of pixels immediately surrounding a pixel.
The apparatus of claim 8, wherein said processing unit includes three input lines.
The apparatus of claim 9, wherein said processing unit includes the capability to delay the gray-level values of selected pixels in the neighborhood to compute the gradient of the gray-level.
The apparatus of claim 8, wherein the neighborhood comprises a three-by-three neighborhood.
An apparatus comprising:
- a plurality of input lines to apply gray-level pixel signal values to a configuration of comparators and digital delay latches, said comparators and digital delay latches being coupled so as to compute in operation whether the gradient of the gray-levels in a neighborhood immediately surrounding a selected pixel is positive, negative or substantially zero.
Dependencies are inferred from the claim text.