中文说明：把RGB图像转换为HSI颜色空间，先分别获取R、G、B分量，然后根据公式分别求出H、S、I分量，然后再组合为HSI，图中还对HSI各分量进行阈值分割
English Description：
HSI color space RGB image converted separately and then get the r, g, b component, and then according to the formula h, s and I weight is obtained, respectively, then mix again for HSI, HSI components were also threshold segmentation