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Extensible object notation method and device for use in video coder/decoder

An object representation, codec technology, applied in the direction of digital video signal modification, image communication, electrical components, etc., can solve the problems of unfavorable detection and recognition, no objects, etc.

Active Publication Date: 2014-05-21
PEKING UNIV
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AI Technical Summary

Problems solved by technology

[0002] Existing video coding methods are not well combined with object detection, usually it is necessary to decode the acquired video code stream, and object detection and recognition can only be performed on the decoded image
At the same time, the video code stream usually does not contain information such as the position and shape of the object, which is not conducive to fast and accurate object detection and recognition

Method used

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  • Extensible object notation method and device for use in video coder/decoder

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] The invention proposes a scalable object representation method in a video codec. In the encoding process, the method determines the object attribute of the coding unit according to the division structure of the coding unit and the object information, so as to encode the object attribute into the bit stream of the output video; in the decoding process, the object attribute is decoded, thereby obtaining the , the location object information.

[0022] Such as figure 1 As shown, the encoding process of a scalable object representation method in a video codec includes:

[0023] Coding object attribute step S1, when encoding the original video image, it is judged whether coding units of different sizes belong to the object, and...

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Abstract

The invention provides an extensible object notation method and device for use in a video coder / decoder. In a coding process, the object property of a coding unit is judged according to the partition structure and object information of the coding unit in order to write the object property into the bit stream of an output video; in a decoding process, the object property is decoded to obtain object information comprising shapes and locations. An extensible object notation device for use in the video coder / decoder is provided by using the method. For a maximum coding unit, recursive partitioning is performed according to a mode decision. For a coding unit of which partitioning is ended, a judgment on whether the coding unit belongs to an object is made. If the coding unit does not belong to the object, an identity coding module is entered to code an object index identity for the coding unit. If the coding unit belongs to the object, an object notation accuracy decision module is entered.

Description

technical field [0001] The invention relates to a scalable object representation method in a video codec, which belongs to the video object representation technology in the technical field of digital media processing. Background technique [0002] Existing video coding methods are not well combined with object detection, usually the acquired video code stream needs to be decoded, and objects can be detected and recognized only on the decoded image. At the same time, the video code stream usually does not contain information such as the position and shape of the object, which is unfavorable for fast and accurate object detection and recognition. Contents of the invention [0003] The invention proposes a scalable object representation method in a video codec. The feature of this method is that in the encoding process, the object attribute of the coding unit is determined according to the division structure of the coding unit and the object information, so that the object a...

Claims

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Application Information

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IPC IPC(8): H04N19/20H04N19/136
Inventor 黄铁军董思维田永鸿王耀威
Owner PEKING UNIV
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