Title :
A comparison of fixed-point 2D 9×7 discrete wavelet transform implementations
Author :
Kim, Hyung Cook ; Delp, Edward J.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
We describe three 2D discrete wavelet transform fixed-point implementations and compare them in terms of quantization error for the Daubechies 9×7 filter bank. The three implementations are the polyphase form, lifting scheme, and reduced scaling lifting scheme. Experimental results show that the reduced scaling lifting scheme is more robust than the other schemes. Also, the number of cycles the implementations take on a Texas Instruments TMS320C6201 simulator are given as reference.
Keywords :
channel bank filters; data compression; discrete wavelet transforms; image coding; Daubechies filter bank; JPEG2000 image compression; TMS320C6201 DSP; discrete wavelet transform; fixed-point implementation; polyphase form; quantization error; reduced scaling lifting scheme; Computational efficiency; Digital signal processing; Discrete wavelet transforms; Filter bank; Image processing; Instruments; Laboratories; Low pass filters; Quantization; Robustness;
Conference_Titel :
Image Processing. 2002. Proceedings. 2002 International Conference on
Print_ISBN :
0-7803-7622-6
DOI :
10.1109/ICIP.2002.1038042
