图像在不同的色彩空间可以表现出不同的光谱特性，从而适用于不同的应用场合。在 HSV 色彩空间中，阴影在色度和饱和度通道中都与非阴影区域有明显的区别。根据阴影的这种特性，利用连续两次的 HSV 彩色空间变换，可以在图像中有效的区分出阴影与非阴影区域。

-Images in a different color space can be expressed in different spectral characteristics, making it suitable for different applications. In the HSV color space, the shadow in the hue and saturation channels with non-shaded area was significantly different. According to the shadow of these characteristics, the use of two consecutive HSV color space conversion, and the distinction between shadow and non-shaded area in the image.