A Method of Image Mosaicking Using Multi-scale Wavelets Decomposition
一种基于多尺度小波分解的图象镶嵌技术

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.