Method and system for detecting cuts in a video signal
AssigneeElectronic Data Systems Corporation
InventorE. North Coleman, Jr.
Life of this patent
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Abstract
A method and apparatus for detecting cuts in a digital video signal made up of a series of video images is disclosed. The method comprises segmenting a plurality of the video images into a number of cells, each comprised of a number of pixels having a pixel intensity value. Then, a plurality of cell contrast vectors each associated with one of the segmented video images is generated. An element of the cell contrast vector comprises the standard deviation of the pixel intensity values for the pixels in a particular cell. A cut detect signal is generated for a video image in response to the cell contrast vector associated with that image.
Claims28
A method of detecting a cut in a digital video signal made up of a series of video images, comprising:
- segmenting a plurality of the video images, each of the plurality of video images segmented into a first number of cells, each cell comprising a second number of pixels, a pixel having a pixel intensity value representing the intensity of the pixel;
- generating a plurality of cell contrast vectors each associated with one of the segmented video images, each element of the cell contrast vector associated with one of the cells and comprising the standard deviation of the pixel intensity values for the pixels in that cell;
- generating a cut-detect signal for a video image in response to the cell contrast vector associated with that image.
A computerized system for detecting a cut in a digital video signal made up of a series of video images, comprising:
- a computer-readable medium;
- and
- a computer program encoded on the computer-readable medium, the computer program further operable to
- segment a plurality of the video images, each of the plurality of video images segmented into a first number of cells, each cell comprising a second number of pixels, a pixel having a pixel intensity value representing the intensity of the pixel;
- generate a plurality of cell contrast vectors each associated with one of the segmented video images, each element of the cell contrast vector associated with one of the cells and comprising the standard deviation of the pixel intensity values for the pixels in that cell;
- and
- generate a cut-detect signal for a video image in response to the cell contrast vector associated with that image.
A computerized system for detecting a cut in a digital video signal made up of a series of video images, comprising:
- a storage medium;
- a processor coupled to the storage medium;
- a digital video signal source coupled to the storage medium and providing the digital video signal to the system;
- a computer program stored in the storage medium, the computer program operable to run on the processor and process the digital video signal, the computer program further operable to
- segment a plurality of the video images, each of the plurality of video images segmented into a first number of cells, each cell comprising a second number of pixels, a pixel having a pixel intensity value representing the intensity of the pixel;
- generate a plurality of cell contrast vectors each associated with one of the segmented video images, each element of the cell contrast vector associated with one of the cells and comprising the standard deviation of the pixel intensity values for the pixels in that cell;
- generate a cut-detect signal for a video image in response to the cell contrast vector associated with that image.
A method of detecting a cut in a digital video signal made up of a series of video images, comprising:
- segmenting a plurality of the video images, each of the plurality of video images segmented into a first number of cells, each cell comprising a second number of pixels, a pixel having a pixel intensity value representing the intensity of the pixel;
- generating a plurality of cell intensity vectors each associated with one of the segmented video images, each element of the cell intensity vector associated with one of the cells and proportional to the average of the pixel intensity values for the pixels in that cell;
- generating a cut-detect signal for a video image in response to the cell intensity vector associated with that image.
Dependencies are inferred from the claim text.