Measuring Acceptance of Block-Based Coding Environments

Block-based Subband Coding

Partial Feedback Based Orthogonal Block Coding

Over the last couple of years a number of spacetime block codes have been proposed for use in multiple transmit antennas systems. In this article we propose a method to extend any space-time code constructed for m transmit antennas to m p transmit antennas through GroupCoherent Codes (GCC). GCC make use of very limited feedback from the receiver (as low as one bit). In particular the scheme can...

Adaptive Block-based Light Field Coding

A compression scheme is presented that has been designed to e ciently code light elds. Based on video compression techniques, the light eld image array is divided into image blocks. Di erent block-coding modes have been devised to exploit redundancy between images over a wide range of target bit rates. Prediction from multiple reference images further enhance coding e ciency. Rate-constrained m...

Measuring acceptance of computer-mediated communication systems

Three dimensions of acceptance for Computer-Mediated Communication Systems (CMCS) were only moderately interrelated in a longitudinal study of users of four systems: use, subjective satisfaction, and benefits. The methodological objective of this study was to identify generaiizabie factor structures for acceptance of CMCS, based on a small set of items. Analysis of the items measuring subjectiv...

Block truncation coding with entropy coding

Block Truncation Coding (BTC) is a simple and fast image compression algorithm wich achieves constant bit rate of 2.0 bits per pixel. The method is however suboptimal. In the present paper we propose a modification of BTC in which the compression ratio will be improved by coding the quantization data and the bit plane by arithmetic coding with an adaptive modelling scheme. The results compare f...