Pseudo Pipelined COordinate Rotation DIgital Computer Discrete Cosine Transform Architecture for Image Compression

2017 ◽  
Vol 14 (8) ◽  
pp. 3758-3763
Author(s):  
D Jessintha ◽  
M Kannan
Keyword(s):  
Image Compression ◽  
Discrete Cosine Transform ◽  
Digital Computer ◽  
Cosine Transform ◽  
Coordinate Rotation ◽  
Coordinate Rotation Digital Computer

Low-Power High-Modularity Architecture for 8-Point DCT Computation

2013 ◽  
Vol 380-384 ◽  
pp. 1816-1819
Author(s):  
Hai Huang ◽  
Jiang Ming Liu ◽  
Bo Wu ◽  
Wei Dong Wang
Keyword(s):  
Low Power ◽  
Discrete Cosine Transform ◽  
Fast Algorithm ◽  
Digital Computer ◽  
Rotation Angle ◽  
Matrix Decomposition ◽  
Experimental Results ◽  
Cosine Transform ◽  
Lower Power ◽  
Coordinate Rotation

In this paper, a low-power and high-modularity architecture for 8-point discrete cosine transform (DCT) computation is proposed. The coordinate rotation digital computer (CORDIC) based fast algorithm for DCT computation is derived using matrix decomposition. The sum-angle formula and double-angle formula is used to reduce the CORDIC types. Thus, a high-modularity DCT architecture is obtained by reusing the unique rotation angle CORDIC. The experimental results show that the proposed DCT architecture has lower power and higher modularity than other known architectures.

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