Patent ID: 11895405
Assignee: UNIVERSITY COLLEGE CORK, NATIONAL UNIVERSITY OF IRELAND, CORK
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 13:
14. The method of claim 13 wherein the step of associating each selected pixel with a unique Walsh code time sequence comprises:
generating a N×N Walsh matrix, wherein each row of the matrix represents a unique N-bit Walsh code time sequence;
folding each column of the Walsh matrix into the same K×J 2D pixel grid;
calculating sequency parameters for each grid;
generating a modified N×N Walsh matrix by reordering the columns of the Walsh matrix from left to right in increasing order of calculated sequency parameters;
numbering the rows of the modified Walsh matrix from top to bottom sequentially from 1 to N; and
associating each selected pixel with the row of the modified Walsh matrix of the same number as the number assigned to the pixel.