Object location using complementary color features: histogram and DCT

Color constitutes an important cue for recognizing and locating objects in complex scenes. Most of the existing techniques using colors employ only color histograms for object recognition and/or location. Color histograms are stable but not accurate. In this paper we study the complementary nature of color histogram and DCT coefficients with respect to accuracy and stability and develop a combined method using both histograms and discrete cosine transform (DCT) coefficients. The methods are experimentally evaluated. The combined method has higher stability and accuracy than using either feature alone