数字图像处理第五章ME和MC技术资料

1、ME and MC Based on WTYan JingwenME and MC Based on WTVideo image motion estimation and motion compensation in DCT domain.Video image motion estimation and motion compensation in WT domain.ME and MC performance comparison in DCT and WT domain.ME of Multi-resolution levelMotion Vector in different lev

2、elMotion Vector Estimation Proceeded for Coarse to Fine ScaleIn Motion Vector in different levelMultiResolution Motion Estimation (MRME) and Full Search Algorithm (FSA) are widely applied in video image compression.FSA have a high precision and a lot of time needed to obtain ME. Motion Vector in dif

3、ferent levelBecause of the downsampling effect, the motion vector estimation in coarse scale gives rise to some error in comparison to the motion vector estimation in time domain, it make the predictive precision decrease.MPEG-1 Motion predictonMPEG-2 Motion predictonInterband self-similiarity Inter

4、band self-similiarityMotion prediction Using Interband self-similiarity2D Motion Prediction(2DMP) Conclusion2DMP can exploit the relations in different frames.Because of the limitation of searching area, 2DMP produces bigger errors when the scenes change speedily.2DMP spend a volume of time, and a h

5、igh compression ratio can be got.3D SPIHT Compression3D SPIHT can be derived from 2DSPIHT.3D SPIHT can exploit 3D redundancy in a 3D video serial, so it does not need motion prediction.3D SPIHT can take advantage of full data information in 3D data.3D SPIHT Compression3D video data construction3D SP

6、IHT CompressionAlternatively apply wavelet transform along X,T, and T dimensions3D SPIHT Compression3D SPIHT Compression3D SPIHT Compression2D SPECK CompressionSet Partition Embedded bloCK (SPECK) Coding IntroductionLow ComplexityEmbeddednessImplementation easily2D SPECK Compression2D SPECK Compress

7、ion2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compression2D SPECK Compress

8、ion2D SPECK CompressionEZW, SPIHT and SPECK Performance ComparisonEZW, SPIHT and SPECK Performance ComparisonEZW, SPIHT and SPECK Performance ComparisonEZW, SPIHT and SPECK Performance ComparisonConclusionConclusionConclusionFrom EZW,SPIHT and SPECK performance comparison, EZW has the lowest compression performance, and SPIHT has the highest compression performance. Especially compress