实现了点击大型遥感图片或其他大型图片的时候能够准确定位到这一点并将这一点附近的像素在子图中显示出来，这样便于更清晰的对图实现观察。-Click large remote sensing images or other large pictures can accurately locate the pixels near it and it is displayed in the subgraph This makes it easy to achieve clearer Figure observation.