The motion transform: a new motion compensation technique
نویسندگان
چکیده
Motion estimation plays an important role in video coding schemes by removing temporal redundancies that exist in image sequences. Motion information that is required in motion compensated prediction is transmitted as side information, as in forward motion estimation, or can be computed at the receiver in backward motion estimation. The former method has the advantage of more accurate prediction but, suffers in that the motion information is transmitted as side information. We introduce the Motion Transform (MT), a new motion estimation and compensation technique that does not require the transmission of motion vectors yet, performs well under a variety of conditions. In the proposed method, motion information is obtained in a bottom-up hierarchical fashion using a two-dimensional wavelet-like decomposition.
منابع مشابه
Motion estimation and compensation in the redundant-wavelet domain using triangle meshes
In this paper, a technique is presented that incorporates an irregular triangle mesh into wavelet-domain motion estimation and compensation using a shift-invariant redundant wavelet transform. The main contribution of this work resides in a demonstration that triangle-mesh motion estimation and compensation can be deployed more effectively in the redundant-wavelet domain thanks to a simple corr...
متن کاملNew adaptive interpolation schemes for efficient meshbased motion estimation
Motion estimation and compensation is an essential part of existing video coding systems. The mesh-based motion estimation (MME) produces smoother motion field, better subjective quality (free from blocking artifacts), and higher peak signal-to-noise ratio (PSNR) in many cases, especially at low bitrate video communications, compared to the conventional block matching algorithm (BMA). Howev...
متن کاملMotion compensated wavelet transform
The wavelet transform has proved its eeciency in removing spatial redundancy. In the framework of hybrid coding schemes, this paper studies the way to combine the wavelet transform and a block matching motion estimation technique. Diierent coding schemes are presented which diier through the data on which the motion estimation and motion compensation are respectively applied. Simulations result...
متن کاملMesh-based motion estimation and compensation in the wavelet domain using a redundant transform
In this paper, a technique is presented that incorporates an irregular triangle mesh into wavelet-domain motion-estimation and motion-compensation using a shift-invariant redundant wavelet transform. Triangle vertices are identified by a simple correlation operator locating image edges in the wavelet subbands, while motion compensation takes place through an affine transformation mapping triang...
متن کاملEvaluation of Wavelet Domain Block Motion Compensation (wbmc)
Wavelet based image compression has proved its superiority over DCT based methods. However, wavelet based techniques did not have so much success in video coding because motion compensation usually produces residuals that are not suitable for wavelet compression. This paper discusses a motion compensation technique which should fit naturally into wavelet based compression schemes. The motion co...
متن کامل