Po-Chih Tseng

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Based on B-spline factorization, a new category of architectures for Discrete Wavelet Transform (DWT) is proposed in this paper. The B-spline factorization mainly consists of the B-spline part and the distributed part. The former is proposed to be constructed by use of the direct implementation or Pascal implementation. And the latter is the part(More)
—In this paper, three generic RAM-based architectures are proposed to efficiently construct the corresponding two-dimensional architectures by use of the line-based method for any given hardware architecture of one-dimensional (1-D) wavelet filters, including conventional convolution-based and lifting-based architec-tures. An exhaustive analysis of(More)
—In this paper, a detailed analysis of very large scale integration (VLSI) architectures for the one-dimensional (1-D) and two-dimensional (2-D) discrete wavelet transform (DWT) is presented in many aspects, and three related architectures are proposed as well. The 1-D DWT and inverse DWT (IDWT) architec-tures are classified into three categories:(More)
In this paper, a novel low-power parallel tree architecture is proposed for full search block-matching motion estimation. The parallel tree architecture exploits the spatial data correlations between parallel candidate block searches for data sharing, which effectively eliminates huge amount of data access bandwidth while consumes fewer hardware resources(More)
The large amount of the frame memory access and the die area occupied by the embedded internal buffer are the most critical issues for the implementation of two-dimensional discrete wavelet transform (2-D DWT). The former would consume the most power and waste the system memory bandwidth. The latter would enlarge the chip size and also consume much power.(More)
— In a typical multi-chip handheld system for multi-media applications, external access, which is usually dominated by block-based video content, induces more than half of total system power. Embedded compression (EC) effectively reduces external access caused by video content by reducing the data size. In this paper, an algorithm and a hardware(More)
In this paper, several VLSI architectures and implementations of Shape-Adaptive Discrete Wavelet Transform (SA-DWT) with odd symmetric biorthogonal filters are presented. The hardware implementation issues of SA-DWT algorithm are first addressed, and one lifting scheme together with some appropriate shape information processing units is introduced for the(More)
In this paper, a novel reconfigurable discrete wavelet transform processor architecture is proposed to meet the diverse computing requirements of future generation multimedia SoC. The proposed architecture mainly consists of reconfigurable processing element array and reconfigurable address generator, featuring dynamically reconfigurable capability where(More)
— In this paper, a memory-efficient VLSI implementation for line-based 2-D DWT, named multiple-lifting scheme, is proposed. Memory bandwidth and memory size dominate the cost of 2-D DWT and are highly related to the total power and area of 2-D DWT VLSI implementation, respectively. The proposed multiple-lifting scheme can reduce not only the average memory(More)