How to prepare custom data for training

[anonymous-useraccount]

How to prepare data for training, data example:
x1,y1,x2,y2,x3,y3,x4,y4,text
x1,y1,x2,y2,x3,y3,x4,y4,text
x1,y1,x2,y2,x3,y3,x4,y4,text
Each annotation text file contains bounding box coordinates with corresponding text.