Chest Radiographs Retrieval Based on Multi-Band Wavelet Transformation

Use the chest radiographs for study,a new image retrieval method based on multi-band wavelet transformation is presented. Firstly,an image is decomposed by multi-band wavelet and the coefficients of each component are extracted; Secondly,row modulus maxima density,column modulus maxima density and modulus maxima energy of each component are computed by analyzing the coefficients,and the eigenvector of the image is composed by them;Finally,the similarity between the target image and each image of the database is measured,and according to the order of the similarities,the retrieval results are displayed.Experimental results show that the retrieval effect based on multi-band wavelet transformation is better than it based on gray level co-occurrence matrix or the binary wavelet transformation.