Fractal video coding by matching pursuit
نویسندگان
چکیده
Fractal image and video coders use redundancies present in different scales of natural images for compression. Motion compensation, on the other hand, is a powerful method for exploiting similarities at the same scale in frames of a video sequence. In this paper, a new method is proposed to take advantage of both interscale and intrascale selfsimilarities present in video sequences. A rate-distortion optimized orthogonal matching pursuit algorithm is used to seamlessly combine motion compensation and fractal techniques into an efficient video coding algorithm.
منابع مشابه
Fractal image coding using rate-distortion optimized matching pursuit
Matching pursuit is a general and exible method for solving an optimization problem that is of interest in signal analysis, coding, control theory and statistics. In this paper, principles of rate-distortion optimal coding are used in combination with matching pursuit algorithm to obtain an enhanced fractal image coding method. The advantages of using such a method over traditional fractal imag...
متن کاملAtom Position Coding in a Matching Pursuit Based Video
Atom Position Coding in a Matching Pursuit Based Video Coder
متن کاملMatching Pursuit Dictionary Pruning for MPEG-4 Video Object Coding
This paper describes how Matching Pursuit can be employed in an MPEG-4 video encoder as a replacement for the DCT at boundary-blocks to improve coding efficiency, while retaining backward compatibility. The key aspect of Matching Pursuit is that the video signal can be represented with less coefficients than with an orthogonal transform, due to the over-complete set of basis functions. However,...
متن کاملEfficient Scalable Video Coding Based on Matching Pursuits
Efficient encoding of motion residuals is essential for low-delay video applications in which videos are encoded by hybrid motion compensation and a residual encoding structure. Current standard video coding systems use hybrid motion compensation and the discrete cosine transform (DCT), where the number of bases needed to encode a residual block is the same as the number of the pixels in the bl...
متن کاملVideo Compression Using Matching Pursuits - Circuits and Systems for Video Technology, IEEE Transactions on
The use of matching pursuit (MP) to code video using overcomplete Gabor basis functions has recently been introduced. In this paper, we propose new functionalities such as SNR scalability and arbitrary shape coding for video coding based on matching pursuit. We improve the performance of the baseline algorithm presented earlier by proposing a new search and a new position coding technique. The ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1996