A Novel VLSI Architecture for Real-Time Line-Based Wavelet Transform Using Lifting Scheme

2007 ◽  
Vol 22 (5) ◽  
pp. 661-672 ◽  
Author(s):  
Kai Liu ◽  
Ke-Yan Wang ◽  
Yun-Song Li ◽  
Cheng-Ke Wu
Keyword(s):  
Wavelet Transform ◽  
Real Time ◽  
Vlsi Architecture ◽  
Lifting Scheme ◽  
Time Line

FPGA Implementation of a High-Speed Two Dimensional Discrete Wavelet Transform

2013 ◽  
Vol 479-480 ◽  
pp. 508-512
Author(s):  
Chin Fa Hsieh ◽  
Tsung Han Tsai
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Real Time ◽  
High Speed ◽  
Critical Path ◽  
Vlsi Architecture ◽  
Image Sensor ◽  
Discrete Wavelet ◽  
Two Dimensional ◽  
Clock Period

This paper proposes high-speed VLSI architecture for implementing a forward two-dimensional discrete wavelet transform (2D DWT). The architecture is based on 2D DWT mathematical formulae. A pipelined scheme is used to increase the clock rate, which allows its critical path to take only one adder delay. The proposed design enables 100% hardware use and faster computing than other 2D DWT architecture. It is easily extended to multilevel decomposition because of its regular structure. It requires N/2 by N/2 clock cycles for k-level analysis of an N by N image. The proposed architecture was coded in VerilogHDL and verified on a real time platform which uses a CMOS image sensor, a field-programmable gate array (FPGA) and a TFT-LCD panel. In the simulation, the design worked with a clock period of 132.38MHz. It can be used as an independent IP core for various real-time applications.

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