Yk. Kim et Jb. Ra, ADAPTIVE LEARNING-METHOD IN SELF-ORGANIZING MAP FOR EDGE-PRESERVING VECTOR QUANTIZATION, IEEE transactions on neural networks, 6(1), 1995, pp. 278-280
The Kohonen's Self-Organizing Map algorithm for vector quantization of
images is modified to reduce the edge degradation in the coded image.
The learning procedure is performed by adaptive learning rates that a
re determined according to the image block activity. The simulation re
sult of 4x4 vector quantization for 512x512 image coding demonstrates
the feasibility; of the proposed method.