Television – Camera – system and detail
Reexamination Certificate
2005-10-11
2005-10-11
Ho, Tuan (Department: 2615)
Television
Camera, system and detail
C348S152000, C382S107000
Reexamination Certificate
active
06954225
ABSTRACT:
A method detects activity within a fixed view by comparing first and second images. The first and second images respectively include a plurality of blocks, and each of the blocks having a plurality of pixels. The method including: calculating an average value A for each block of the second image, each of the average values A is equal to an average of differences between pixels of one of the blocks of the second image and pixels of a corresponding block of the first image; calculating a mean difference B between average pixel values of the first and second images; calculating a difference V between average value A and mean difference B for each block of the second image, and selecting blocks of the second image that have corresponding differences V greater than a threshold value; and determining whether there is any object moving within the fixed view according to the selected blocks.
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Ho Tuan
Hsu Winston
Huper Laboratories Co. Ltd.
Jelinek Brian
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