Robust Image Hashing Based on Cool and Warm Hue and Space Angle

Image hashing has attracted more and attention in the field of information security. In this paper, a novel algorithm using cool warm hue three-dimensional space angle is proposed. Firstly, original image preprocessed to get opposite color component H HSV space. Then, distribution pixels extracted from H. Blocks H, according proportion each small block, combined with quaternion component, constructed (CWOCQ) feature. space, color, are obtain (TDSA) The CWOCQ feature TDSA connected disturbed final hash sequence. Experimental results show that proposed good security better classification performance shorter computation time compared some advanced algorithms.