SYSTEM AND METHOD FOR VIDEO CODING USING VARIABLE COMPRESSION AND OBJECT MOTION TRACKING
First Claim
Patent Images
1. A method of coding a video signal that contains video data corresponding to an imaged scene, comprising:
- identifying an object that corresponds to a visual element from the scene, a portion of the scene other than the visual element being a remainder of the scene;
compressing video data corresponding to the object and compressing a remainder of the video data using an amount of compression that is greater than an amount of compression used to compress the video data for the object so as to produce a high fidelity video component corresponding to the visual element and a low fidelity video component corresponding to the remainder of the scene; and
tracking the object using the high fidelity video component and using tracking information regarding a predicted position of the object in a future frame of the video signal to compress the video data when the future frame arrives.
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Abstract
A video coding technique and system employ variable compression for different portions of an imaged scene and motion tracking of an object. The object is coded to have higher fidelity than a remainder of the scene. The higher fidelity facilitates tracking of the object that, in turn, assists in maintaining quality coding of the object.
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Citations
22 Claims
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1. A method of coding a video signal that contains video data corresponding to an imaged scene, comprising:
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identifying an object that corresponds to a visual element from the scene, a portion of the scene other than the visual element being a remainder of the scene; compressing video data corresponding to the object and compressing a remainder of the video data using an amount of compression that is greater than an amount of compression used to compress the video data for the object so as to produce a high fidelity video component corresponding to the visual element and a low fidelity video component corresponding to the remainder of the scene; and tracking the object using the high fidelity video component and using tracking information regarding a predicted position of the object in a future frame of the video signal to compress the video data when the future frame arrives. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A video signal encoder that encodes a video signal that contains video data corresponding to an imaged scene, comprising:
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an object identification module that identifies an object that corresponds to a visual element from the scene, a portion of the scene other than the visual element being a remainder of the scene; an image compression module that compresses video data corresponding to the object and compresses a remainder of the video data using an amount of compression that is greater than an amount of compression used to compress the video data for the object so as to produce a high fidelity video component corresponding to the visual element and a low fidelity video component corresponding to the remainder of the scene; and a motion tracking module that tracks the object using the high fidelity video component and generates tracking information regarding a predicted position of the object in a future frame of the video signal, the tracking information used by the image compression module to compress the video data when the future frame arrives. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of coding a video signal that contains video data corresponding to an imaged scene, comprising:
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compressing video data corresponding to an identified portion of the scene; compressing a remainder of the video data using an amount of compression that is greater than an amount of compression used to compress the video data for the identified portion of the scene; and outputting a high fidelity video component corresponding to the identified portion of the scene and a low fidelity video component corresponding to the remainder of the video data. - View Dependent Claims (22)
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Specification