Color Morphological Transforms Based on HSL Space

Based on HSL (hue-saturation-lightness) color space, a new approach to color morphology, an evolution of mathematical morphology from gray-scale image to color image, is proposed . New color morphological operators are defined, and their properties are discussed. As an extension of mathematical morphology to color space, the proposed transformation can be efficiently used in color image processing, image encoding and shape features extraction of objects, etc.