SURF (Scale Invariant Feature Transform) is a robust local invariant feature descriptor. However, SURF is mainly
designed for gray images. In order to make use of the information provided by color (mainly RGB channels), this paper
presents a novel colored local invariant feature descriptor, CISURF (Color Invariance based SURF). The proposed
approach builds the descriptors in a color invariant space, which stems from Kubelka-Munk model and provides more
valuable information than the gray space. Compared with the conventional SURF and SIFT descriptors, the experimental
results show that descriptors created by CISURF is more robust to the circumstance changes such as the illumination
direction, illumination intensity, and the viewpoints, and are more suitable for the deep space background objects.
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