gradient preference

• 梯度适应

gradient preference的用法和样例：

例句

1. This algorithm is based on the watershed transform.First the gradient image is preprocessed according to the pixels intensity and spatial information.
   该方法在分水岭算法的基础上，首先结合像素点亮度特征和空间分布特性应用自适应方法对梯度图像进行预处理。