In order to raise the image expressing ability of the detail of potential field data, a method of determining color specification file based on field value gradient is brought up from the idea of non-uniform whole quantity.

• 为了提高图像表达位场数据细节信息的能力，借鉴图像灰度非均匀整量的思想，给出了一种基于场值梯度的色标文件生成方法。