In this paper a novel image mosaicking approach is proposed

which includes three steps. Firstly multi-scale wavelet decompositions are performed on each image segment that is partitioned from large reference image and each tile image in image library respectively. Then standard deviations of image wavelet decomposition coefficients and similarity distance between image segments and tile images are calculated in each level

which latterly are used as a criterion for tile image selection that images in library best matched to the mosaic area in reference image are selected. Finally to make the color of mosaic image identical to that of reference image

color correction on each pixel of mosaic image is employed. Due to human visual character that what human perceives is only the whole intensity of observed region by rounding and meaning of the intensity values in it

the final work of mosaicing has realized the effect that the tile images only can be discern nearly and the overall figure looks similar to that of the reference image from a distant view. An automatic computer mosaic image generation routine using above algorithm has been implemented

which shows the feasibility of this approach.