Accept headers can be used to indicate that the request is specifically limited to a small set of desired types, as in the case of a request for an in-lineimage.
Accept标头可用来指示该请求专门限于一小组期望类型，如请求内联映像时。
2
For each linein the data array, extract the precise pixel coordinates in the image.
对于数据数组中的每一行，提取图像中的精确像素坐标。
3
The path of the image file is defined in the first line; the script won't work unless the path is identified correctly.