In this work, a hierarchical ensemble of projected clustering algorithm for high-dimensional data is proposed. The basic concept of the algorithm is based on the active learning method (ALM) which is a fuzzy learning scheme, inspired by some behavioral features of human brain functionality. High-dimensional unsupervised active learning method (HUALM) is a clustering algorithm which blurs the da...

In this paper, we propose the optimized real-time MPEG-2 video decoder. The decoder has been implemented in one FPGA device as a HW/SW partitioned system. We made timing/power-consumption analysis and optimization of the MPEG-2 decoder. On the basis of the achieved results, we decided for hardware implementation of the IDCT and VLD algorithms. Remaining parts were realized in software with 32-b...

|We propose the new Group Metric (GM) decoder for convolutionally coded synchronous multiple-access channels. The GM decoder makes decoding decisions for one user, but incorporates multiuser information in its metrics. This decoder will have a reduced complexity which is exponential in the sum of encoder memory and the number of users. The soft-decision maximum-likelihood (ML) joint decoder can...

This paper presents a novel low-cost high-performance CAVLC decoder for H.264/AVC. The proposed CAVLC decoder generates the length of coeff token and total zeros symbols with simple arithmetic operation. So, it can be implemented with reduced look-up table. And we propose multi-symbol run before decoder which has enhanced throughput. It can decode more than 2.5 symbols in a cycle if there are r...

This paper addresses the issue of cell loss and its consequent effect on video quality in a packet video system, and examines possible compensative measures. In the system's enconder, adaptive spectral separation is used to develop a two-layer coding scheme comprising a high priority layer to carry essential video data and a low priority layer with data to enhance the video image. A two-step er...

In this paper, we present a high-performance VC-1 mainprofile decoder for high-definition (HD) video applications, which can decode HD 720p video streams with 30 fps at 80 MHz. We implemented the decoder with a one-poly eight-metal 0.13 μm CMOS process, which contains about 261,900 logic gates and on-chip memories of 13.9 KB SRAM and 13.1 KB ROM and occupies an area of about 5.1 mm2. In designi...

We present an active chart parser which parses left connected wordgraphs in a strictly time synchronous way. The parser performs a beam search on the possible paths through the word graph and on the possible derivations of the uni-cation grammar simultaneously. A metric is given to assign scores to edges, taking into account the whole left context thereby combining acoustic probabilities, n-gra...