In order to recognize small objects, we need to crop the image， so that nvinfer can get objects
Gst-nvinfer can crop multiple objects images when it works as SGIE. Please refer to Gst-nvinfer — DeepStream 5.1 Release documentation and the sample code of deepstream-test2 (C/C++ Sample Apps Source Details — DeepStream 5.1 Release documentation).
In order to identify small targets，I want to divide a 1920 * 1080 image into four images，and then, after “nvstreammux” and “nvinfer”. what should we do in deepstream