Rigde of probability desity based color normalization method for Image Mosaic

Abstract

Abstract: Considering the problem of the the chromaticity among a collection of remote sensing images that are to create image mosaics often differs，a rigde based color normalization method is proposed. The joint probability desity (PD) of DN values in the overlapped area of two images is calculated, then line equation across the ridge of PD is extracted as the regression model , the input image is corrected and make all the image have similar contrast and chromaticity distribution. Landsat TM data was selected to test the method, the result shows the color is uniform and have good visual features. The proposed method is more robust and has better statistical characteristics than traditinal method.

Key words: image mosaic, joint probability density, ridge extraction, color normalization

CLC Number:

P237

References

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