Title :
Recovering from bit errors in scalar-quantized discrete wavelet transformed images
Author :
Mohr, Alexander E. ; Riskin, Eve A. ; Ladner, Richard E.
Author_Institution :
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
Abstract :
In this paper we study the effects of transmission noise on fixed-length coded wavelet coefficients. We extend our previous work on maximum a posteriori detectors (Wang et al. 1996) to include inter-bitplane information and determine which transmitted codeword was most likely corrupted into a received erroneous codeword. We present a simple method of recovering from these errors once detected and demonstrate our restoration methodology on scalar-quantized wavelet coefficients that have been transmitted across a binary symmetric channel
Keywords :
discrete wavelet transforms; error correction; image coding; image restoration; noise; nonlinear filters; telecommunication channels; transform coding; binary symmetric channel; bit errors; fixed-length coded wavelet coefficients; inter-bitplane information; maximum a posteriori detectors; received erroneous codeword; recovery; restoration; scalar-quantized discrete wavelet transformed images; transmission noise; transmitted codeword; Computer errors; Discrete wavelet transforms; Error correction codes; Frequency; Low-frequency noise; Noise robustness; Quantization; Redundancy; Robust control; Wavelet analysis;
Conference_Titel :
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-8186-8821-1
DOI :
10.1109/ICIP.1998.999038
