An optimality principle for unsupervised learning
Advances in neural information processing systems 1
Color quantization by dynamic programming and principal analysis
ACM Transactions on Graphics (TOG)
Principal component neural networks: theory and applications
Principal component neural networks: theory and applications
Self-organizing maps
Gray-level reduction using local spatial features
Computer Vision and Image Understanding
Pattern Recognition with Fuzzy Objective Function Algorithms
Pattern Recognition with Fuzzy Objective Function Algorithms
Neural Networks: A Comprehensive Foundation
Neural Networks: A Comprehensive Foundation
DELTA '02 Proceedings of the The First IEEE International Workshop on Electronic Design, Test and Applications (DELTA '02)
Color image quantization for frame buffer display
SIGGRAPH '82 Proceedings of the 9th annual conference on Computer graphics and interactive techniques
Engineering Applications of Artificial Intelligence
Sample-size adaptive self-organization map for color images quantization
Pattern Recognition Letters
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Color image compression and limited display using self-organization Kohonen map
IEEE Transactions on Circuits and Systems for Video Technology
New adaptive color quantization method based on self-organizing maps
IEEE Transactions on Neural Networks
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A new method is proposed for initializing Kohonen's selforganizing feature maps (SOFM) of fixed zero neighborhood radius for use in color quantization. The method employs the two largest principal components of the input image so that the initial weights of a number of neurons approach the input image color distribution. The rest of the neurons are initialized using the smallest principal component of the input image. Namely, standard SOFM is applied to the projection of the input image pixels onto the plane spanned by the two largest principal components and to pixels of the original image defined by the smallest principal component. The neuron values which emerge initialize the final SOFM of fixed zero neighborhood radius that performs the color quantization of the original image. Experimental results show that the proposed method can often produce smaller quantization errors than standard SOFM and other color quantization methods.