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Wavelet Transform Aparatus and Method, Scalable Video Coding Apparatus and Method Employing the Same, and Scalable Video Decoding Apparatus and Method Thereof
Wavelet Transform Aparatus and Method, Scalable Video Coding Apparatus and Method Employing the Same, and Scalable Video Decoding Apparatus and Method Thereof
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机译:小波变换设备和方法,采用其的可伸缩视频编码设备和方法以及可伸缩视频解码设备和方法
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摘要
Provided are a lift-based wavelet transform apparatus and method, a scalable video coding apparatus and method using the same, and a scalable video decoding apparatus and method. The lifting-based wavelet transform apparatus includes: a prediction unit which performs bidirectional motion compensation on odd-indexed frames based on even-indexed frames and generates high-frequency frames using differential frames from which most of energy is removed; an update determination unit which, in the even-indexed frame, determines whether to update each target block at which a reference block indicated by a motion vector is placed; and an update unit which updates a target block of the even-indexed frame which is determined to be updated by adding the differential frame to each target sub-block included in the target block and generates low-frequency frames.
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