Title :
Error correcting source decoding
Author :
Cinkler, Kalman ; Kammeyer, Karl Dirk
Author_Institution :
Telecommun. Dept., Bremen Univ., Germany
Abstract :
This paper presents an a posteriori channel error correction method, based on subband synthesis. We estimate the position and amplitude of transmission errors using undownsampled subband signals, thus allowing correction of the subband signals and resynthesis of a nearly error-free signal. The method can be extended to multiple dimensions. Examples of images transmitted (compressed) with and without this method are shown. The results are very promising.
Keywords :
data compression; decoding; error correction codes; image coding; source coding; a posteriori channel error correction method; amplitude estimation; compressed image transmission; error correcting source decoding; image coding; multiple dimensions; position estimation; subband synthesis; transmission errors; undownsampled subband signals; Channel capacity; Decoding; Discrete wavelet transforms; Error correction; Filtering; Filters; Image coding; Quantization; Signal analysis; Signal synthesis;
Journal_Title :
Signal Processing Letters, IEEE
