Method and system for detecting transitional markers such as uni

Details Method and system for detecting transitional markers such as uni Method and system for detecting transitional markers such as uni

1996-06-07

1998-07-07

Boudreau, Leo

Image analysis

Image transformation or preprocessing

Image storage or retrieval

348700, 395328, H04N 974

Patent

active

057781087

ABSTRACT:
A method and system for detecting transitional markers such as uniform images in a digital video signal made up of a series of video images is disclosed. One aspect of the invention is a method for detecting uniform fields. The method comprises segmenting a plurality of the video images into a number of cells, each cell comprising a number of pixels, each pixel associated with an intensity value representing the intensity of the pixel. Then, a plurality of cell contrast vectors each associated with one of the segmented video images is generated. Each element of the cell contrast vector is associated with one of the cells of the video image and comprises the standard deviation of the pixel intensity values for the pixels in that cell. A uniform image is detected for a video image in response to the cell contrast vector for that image.

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