关键词: 颜色分量补偿, 图像检测, 预处理, 分量选择

Abstract: This paper presents a preprocessing method for color-component compensation to improve the performance of traffic sign image processing.The RGB color-components are separated and candidate component is selected according to the chroma-features of traffic sign firstly.Then，threshold processing is applied on the candidate color-component to extract the sign region from background.A new traffic sign image is reconstructed by the replacement between threshold and its corresponding color-component.Finally，color extraction method is employed on the new image to figure out the candidate sign region accurately.Experimental results show that the proposed preprocessing method can improve the performance in traffic sign detection，especially in region location and shape checking.The proposed method can serve as a feasible solution for preprocessing of traffic sign image.

Key words: color-component compensation, image detection, preprocessing, component choice