Adaptive frame rate up-conversion method based on motion classification

A technology of motion classification and conversion method, applied in the direction of standard conversion, image analysis, color TV components, etc., can solve the problem of inaccurate compensation and interpolation, and achieve the effect of improving accuracy, avoiding errors and saving calculation amount.

Inactive Publication Date: 2009-07-22
XIDIAN UNIV
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Problems solved by technology

[0010] The purpose of the present invention is to provide an adaptive frame rate up-conversion method based on motion classification, to overcome the problem of inaccurate compensation and interpolation cause...

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  • Adaptive frame rate up-conversion method based on motion classification
  • Adaptive frame rate up-conversion method based on motion classification
  • Adaptive frame rate up-conversion method based on motion classification

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Embodiment Construction

[0044] The core idea of ​​the present invention is to use a simple and effective global motion estimation method to classify frame sequences into frame sequences with global motion types and frame sequences with local motion types. For the sequence of global motion, since the whole frame of images is almost in motion, the motion estimation part is performed directly. For local motion sequences with static pixels accounting for the majority, the detection of moving objects and the detection of occluded and exposed areas are performed, and only the motion analysis is performed on the moving parts. In order to obtain motion vectors with high accuracy, the present invention adopts a hybrid motion estimation method to obtain motion vector information. For the search strategy, it can be determined according to the system requirements. If the real-time requirement is high, the fast search method can be used. If the interpolation frame quality is high, the full search, 3DRS search can...

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Abstract

The invention discloses a self-adapting motion compensation frame rate up-conversion method based on a motion classification mainly solving the problems of inaccurate motion compensation and over big motion complexity in the prior method and comprising: firstly dividing a video into a global motion sequence and a local motion sequence by a global motion estimating method based on an integral projection; obtaining a still background and an occlusion region by a motion detection to the local motion sequence through a high order statistical model; constructing a gray co-occurrence matrix with a pixel distance, quantizing a vein complexity by using two indexes of an angle second moment and an entropy; adding a Cross-Sectional Absolute Deviation (CSAD) criterion to a provided mixing motion estimation method, performing the motion estimation to a motion region of the global motion sequence and the local motion sequence according the vein complexity, avoiding the generation of a superposition and a pore zone during a motion compensation interpolation; finally performing the compensation interpolation to the motion region, and performing a time-domain average to the still region. The occlusion region is a copy of a current frame or former frame.

Description

technical field [0001] The invention belongs to the field of image / video processing, and relates to digital TV format processing, in particular to an adaptive frame rate up-conversion method, which can be used for video conferencing, compatibility of video terminal equipment, and video enhancement of low-bit encoding and decoding terminals. Background technique [0002] With the rapid development of image coding and video transmission, digital high-definition television HDTV enables people to enjoy extremely high-quality audio-visual enjoyment in their living rooms. However, the transition from analog to digital TV is a gradual process. High-definition TV HDTV, standard-definition TV SDTV, and traditional analog TV will exist at the same time for a long period of time. Various film and television equipment have different frame rate requirements, so frame rate conversion is required for connections between various devices. [0003] Frame rate up-conversion refers to converti...

Claims

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Application Information

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IPC IPC(8): H04N5/14H04N7/01G06T7/20
Inventor 高新波路文程鹏刘妮何力火
Owner XIDIAN UNIV
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