Detection of a pattern in a digital image
First Claim
1. A method for detecting a pattern in a digital image by successive comparison of the content of current windows with the content of at least one reference window representative of the pattern, the reference window containing values of variance or standard deviation of sub-blocks of pixels of the pattern and the current windows containing values of variance or standard deviation of sub-blocks of pixels of the image, the sub-blocks being of the same size in the current and reference windows.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for detecting a pattern in a digital image by successive comparison of the content of current windows with the content of at least one reference window representative of the pattern, the reference window containing values of variance or standard deviation of sub-blocks of pixels of the pattern and the current windows containing values of variance or standard deviation of sub-blocks of pixels of the image, the sub-blocks being of the same size in the current and reference windows.
15 Citations
12 Claims
- 1. A method for detecting a pattern in a digital image by successive comparison of the content of current windows with the content of at least one reference window representative of the pattern, the reference window containing values of variance or standard deviation of sub-blocks of pixels of the pattern and the current windows containing values of variance or standard deviation of sub-blocks of pixels of the image, the sub-blocks being of the same size in the current and reference windows.
-
7. A method for detecting a pattern in a digital image, comprising:
-
defining a reference window containing variance or standard deviation values representative of sub-blocks of the pattern; defining a current window of equal size as the reference window, the current window containing variance or standard deviation values representative of sub-blocks of the image, the sub-blocks of the pattern and the sub-blocks of the image having equal dimensions; and successively comparing the values of the sub-blocks of the reference window with the values of the sub-blocks of the current window. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification