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Research on Frame Rate Up Conversion Based on Symmetrical Motion Compensation Interpolation

Author: HeQingDi
Tutor: ZhouZongYi；YuLi
School: Huazhong University of Science and Technology
Course: Communication and Information System
Keywords: Video Coding Frame - rate up - conversion Symmetrical motion compensation Bidirectional motion estimation Lens shift detection
CLC: TN919.81
Type: Master's thesis
Year: 2009
Downloads: 36
Quote: 0
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Abstract


With the development of information technology , multimedia communication has gradually become an important part of people's lives . Multimedia data requires a tremendous amount of data , therefore , in order to meet the requirements of storage and transmission must be compressed. Although today 's video compression techniques can provide a higher compression ratio , but for some transmission bandwidth is limited occasions , still the need for new technology to provide a sufficiently low bit rate . Low bit rate coding techniques usually two ideas , i.e. reduce the time resolution or the spatial resolution of the input video . If you keep the frame rate unchanged , will inevitably bring about the decline of the decoding side output video quality . Or under conditions that guarantee the quality of the video frame , lower frame rate. In this case , the decoding side , the introduction of a frame-rate conversion mechanism can be restored to the original frame rate is very necessary so that the decoded sequence . This paper first introduces the key technology of video codec and the current mainstream video codec standard , and then described in detail on the current frame rate conversion technology research status and on behalf of the algorithm , and on this basis, based on symmetric motion compensation frame rate conversion technology, effectively avoiding the direct use of traditional motion estimation motion compensated interpolation overlaps and empty . Condition for strenuous exercise and scene switching a motion compensated extrapolation use interpolation algorithm can not find the exact matching block blur caused and error phenomenon . In addition, in reference to the lens switching the basis of the theory , the paper also proposed a compressed domain - based lens pan detection and recovery algorithm , video sequences within the lens fast or slow pan , can be based on stream the motion vector distribution of intra- block and residual detection and recovery , so that the newly inserted video frames to get a better subjective and objective effects .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Image communication, multimedia communication > Image coding
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