中文说明：应用背景这种方法的优点是能够克服图像背景的干扰 先在灰度处理的部分通过调整灰度图像的上下阈值 去掉背景中与曲线灰度值相差较大的部分关键技术为方便 准确地将数字图像中的曲线图转换为可以被计算机识别的 便于随时调用的曲线数据 论 文提出一种基于图像处理技术提取图像中曲线数据的新方法 并利用 Matlab 编写出 GUI 程序 这 种方法通过对图像进行灰度变换 二值变换 形态学运算的细化和重构 将数字图像中的曲线图提 取出来 同时将曲线的数据 即曲线上点的坐标 以数组的形式保存为 Matlab 数据文件 之后即可 在 Matlab 中通过插值法得到曲线上任意一点的值
English Description：
Application backgroundThe advantage of this method is that it can overcome the interference of the background of the image in the gray processing section.Key TechnologyIn order to facilitate the conversion of the curve diagram of the digital image to the curve data, which can be identified by computer, it can be easily and accurately.In this paper, a new method of extracting curve data from image processing technology based on image processing technique is proposed, and the GUI program is written in Matlab.Method through the image of gray-scale transformation binary morphological transformation operation refinement and reconstruction of the digital image curve figureTake out the curve of the data that is, the coordinates of the points on the curve in the form of an array of Matlab data can be saved as a fileThe value of any point on the curve is obtained by the interpolation method in Matlab.