An efficient HW/SW implementation for Wavelet-based t+2D Video Coding
Main Article Content
Abstract
In recent years, video compression has emerged as an effective technique to reduce spatial and temporal redundancy in video sequence. Temporal redundancy reduction deals with motion estimation and motion compensation algorithm with the matching technique to produce the next encoded video frame with motion vector. However, computational complexity and resource sharing of the motion estimation algorithm poses great challenges for real time applications. Dealing with these issues, the first part of this paper focuses on a system-level implementation of a wavelet-based t+2D video coding. Three blocks matching algorithms are implemented in order to evaluate the overall system performance. In fact, since the chip design and layout process is time consuming and expensive, it is very important to be able to predict the overall system performance in a high-level implementation before its circuit layout is deployed. The aim is to discuss the impact of different block matching motion estimation algorithms on video coding performance. Because of the complexity of the entire motion estimation system, decision in choosing one algorithm versus the other algorithms is often empirical and crucial. The paper presents also an efficient HW/SW codesign architecture for the proposed video encoder and its FPGA implementation. Each module of the encoder is investigated to find which approach between HW and SW is better to achieve overall performances such as real-time processing speed and flexibility.
Keywords: motion estimation, block matching algorithm, t+2D wavelet transform, video compression, HW/SW codesign, MPSoC.
Downloads
Article Details
COPYRIGHT
Submission of a manuscript implies: that the work described has not been published before, that it is not under consideration for publication elsewhere; that if and when the manuscript is accepted for publication, the authors agree to automatic transfer of the copyright to the publisher.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work
- The journal allows the author(s) to retain publishing rights without restrictions.
- The journal allows the author(s) to hold the copyright without restrictions.