Which algorithm are you referring to? I have a copy of Jain et al and I can’t find what you’re describing. Do you have a link to something? The Hough transform

Which algorithm are you referring to? I have a copy of Jain et al and I can’t find what you’re describing. Do you have a link to something? The Hough transform is used in this article, if that’s what you’re thinking of, but that will not work to find the bounding box of text, the lines have to be solid, contiguous, and linear for that to work. Note the method in the article doesn’t depend on the text having a solid surround color, or even have the text arranged in a roughly rectangular shape. And it also doesn’t depend on the text being linear. These differences are valuable, not having to make the same assumptions you’re making, and it means this method (whether or not it’s “better”) may work in a wider variety of situations, or may make a very good complement to existing methods.