-: If data is not labeled then use "labelimg" and label your data(this step is very important, check video on youtube how to do that)
-: After label you data , you will have XML of all images
-: create folder (annotations and images) [E.g, cardDetection-:(annotations,images)]
-: put your Images in "images" folder and it's XML in "annotations" folder
-: "pretrained-yolov3.h5" download this from internet
-: check version of tensorflow
-: now, set your path and run your script
-: after first phase, you will have many models
-: download the latest one
-: set path and load the model
-: use that model into the OpenCv
-: we have a result