Patent ID: 11882843
Assignee: UNIVERSITY OF MARYLAND, COLLEGE PARK
Field: Computer technology (Electrical engineering)
Classification: CPC A  B  G | IPC A  B  G

Claim 10:
11. The method of claim 10, further comprising:
in said CNN processing routine, prior to the application of the sliding window, pre-processing said each image for the conveyor belt background removal and main body centroid determination through transforming said each image into a binary format image and applying a distance transformation routine to said binary format image,
generating a gray scale image containing pixel values describing a distance between a specific pixel and a closest background pixel,
applying a watershed routine to said grayscale image to merge pixels with similar grayscale value into a group thereof, and
training said knuckle detection CNN classification model by a training dataset containing a plurality of knuckle sub-image regions and no-knuckle sub-images.