Back to results
US 2011/0234912 A1Published application
Image activity detection method and apparatus
OwnerXu Wang, Jiang Denginventors
Life of this patent
Estimating the term…
Abstract
The invention provides a method and apparatus for performing activity detection on images, by comparing a difference in file sizes of two still images f0 and fd between a predetermined interval, it is judged whether an activity happens on the image within the predetermined interval. Algorithm of the invention is very simple and computation burden thereof will not be affected by size of the detected image or number of pixels.
Claims7
An image activity detection method comprising steps of:
- a. collecting and storing a still image f0 before an activity happens;
- b. collecting a still image fd according to a predetermined interval;
- c. comparing whether a difference in file sizes of the still images f0 and fd is greater than a predetermined threshold;
- and
- d. outputting information confirming that an activity happens in the image detected within the predetermined interval if the difference in file sizes of the still images f0 and fd is greater than the predetermined threshold.
2 more elements
An image activity detection apparatus, comprising:
- an image collecting module for collecting a still image f0 before an activity happens and collecting a still image fd according to a predetermined interval;
- a storage module for storing the still image f0 before an activity happens;
- and
- a comparing module for comparing whether a difference in file sizes of the still images f0 and fd is greater than a predetermined threshold, and outputting information confirming that an activity happens in the image detected within the predetermined interval if the difference in file sizes of the still images f0 and fd is greater than the predetermined threshold.
1 more element
Dependencies are inferred from the claim text.