Wavelet Coefficients Generalized Gaussian Distribution Image Retrieval Algorithm Based on Shape

An image retrieval method based on shape was proposed by using wavelet coefficients Gaussian density distribution.This approach forms the feature vector of the shape by taking advantage of the statistical attribution of wavelet transformation coefficients.Experimental results show that the extracted feature vector can depict the shape outline accurately,and remain invariant to the image's scale and rotation.It is an efficient image retrieval method based on the shape content.