A Morphological Color Image Contrast Enhancement Technique Using Hilbert 3D Space Filling Curve

This paper presents a method based on mathematical morphology for enhancing the contrast of a color image using total ordering with Hilbert space filling curves. The method defines a total ordering of three-dimensional (3D) space (RGB space) using Hilbert 3D space filling curve and then applies morphological operators on the color image to obtain the contrast enhanced image. The output obtained through the above method has been compared with the outputs obtained through marginal morphology and vector morphology based on a distance measure. Experimental results show the efficiency of the proposed method in terms of enhanced contrast and better time complexity.

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