by Dept. of Electrical Engineering, Linköping University in Linköping .
Written in English
|Series||Linköping studies in science and technology -- no. 318|
|LC Classifications||TA1632 .L5 1993|
|The Physical Object|
|Pagination||254 p. :|
|Number of Pages||254|
Low bit-rate coding of image sequences using adaptive regions of interest. Low bit-rate image sequence coding Author: This research has recently culminated in the introduction of several standards for image compression. The CCITT H and the motion picture experts group (MPEG) standards both target full-motion video and are based upon a hybrid architecture which combines motion-compensated prediction with Cited by: 2. Low bit-rate coding of image sequences using adaptive regions of interest January IEEE Transactions on Circuits and Systems for Video Technology 8(8) - Spatio-temporal segmentation of image sequences for object-oriented low bit-rate image coding.
In this paper a new motion compensated predictive coding method for an image sequence at a low bit rate is presented. Motion compensation is based on the segmentation of the reconstructed image performed in both encoder and decoder. This will eliminate the need to transmit the region shape information. Also, motion vector prediction is implemented to reduce the overhead for motion information. MALLAT AND FALZON: ANALYSIS OF LOW BIT RATE IMAGE TRANSFORM CODING Fig. 1. Four test images for numerical experiments. the same scanning order, the amplitude of the nonzero quan-tized coefﬁcients are also entropy encoded with a Huffman or an Arithmetic coding. Fig. 2 gives the distortion of this wavelet trans-form coding for the test. Nicolas, H.; Cicconi, P. Proc. of International Workshop on Coding Techniques for Very Low Bit-rate Video, Colchester, United Kingdom, 6, The scope of this chapter encompasses the coding of video signals, both black and white and color, to be displayed on a television screen for human viewing. Discussions of image sequences derived from radar, infrared, and acoustic sources as well as image sequence coding for automatic tracking of objects have been excluded.
image. However, this output is extended in the space and in the time so that the final masks to be computed. The results show a significant improvement of the quality of the frames at low bitrates. 1. Introduction Several coding techniques have been proposed in the past in order to reduce the spatial-temporal redundancy of image sequences. Conventional schemes for low bitrate coding of image sequences such as the video coding standard for audiovisual services at low data rates (CCITT Rec. H, ) are developed from statistical communication theory. without any per image adaptation of configuration and QP value. 4. Conclusion As we have shown, the HEVC Intra frame encoder is an excellent candidate for next generation low bit rate image compression. It offers sophisticated encoding tools, a large and constantly expanding install base, and . Video image sequence coding at low bit rate. Author: Fadzil, Ahmad. ISNI: Awarding Body: University of Essex Current Institution: The University of Essex pre-October Date of Award: Availability of Full Text: Full text unavailable from EThOS.