Dynamic positioning method and system for detection area of long-period sequence image

The invention provides a method and a system for dynamically positioning a detection area of a long-period sequence image. According to the method, the image with the standard periodic height is extracted from the collected periodic image to serve as the reference image, the image obtained through modeling is utilized, the position coordinates of each detection segment in the modeling image are dynamically obtained through the multi-window sliding comparison technology, and the position coordinates are continuously adjusted, updated and fed back, so that dynamic positioning of the detection area is completed. For long-period products, under the conditions that the overall similarity of the products is high and a certain image is deformed and distorted, the detection area can be accurately matched in real time, and the detection requirement is met. 本申请提供了一种长周期序列图像的检测区动态定位方法和系统。本申请通过从采集到的周期图像中提取具有标准周期高度的图像作为基准图像，利用建模得到的图像，通过多窗口滑动比对技术，针对每个检测片段动态获取其在建模图像中的位置坐标，不断调整、更新、反馈，从而完成检测区动态定位。对于长周期类产品，在产品总体相似性较高且存在某种图像变形扭曲