问题
I tried this example Hough Transform.
But I didn't get any results after making an example with original image.
I'm currently wanting to make it work for my application where I'm trying to extract the boxes out and use OCR and get the numbers of this.
Please refer to this question for more information.
So, I could then add them all up. It's from a paper.png, whose the right side is cropped.
来源：https://stackoverflow.com/questions/29776316/hough-transform-in-java-extract-rectangles