关键词: 图像金字塔, Gaussian金字塔, Laplacian金字塔, 分维, 图像融合

Abstract: Data fusion is an important technique to detect and recognize target from images. However, loss of information is unavoidable in fusion process. It is crucial to select fusion algorithm and avoid the loss of useful information. Because images in different levels of image pyramid were self-similar, which was the foundation of fractal, a new image fusion algorithm was presented based on image pyramid and fractal dimension. Different source images were decomposed into image pyramid sequence with different scales. Corresponding level images were merged, with fractal dimension as weight. An experiment was given using a mid-wave and a long-wave infrared image as two source images. Experiment results show the algorithm is feasible.

Key words: image pyramid, Gaussian pyramid, Laplacian pyramid, fractal dimension, image fusion