How to adjust contrast for text.

[yash0307]

Dear Ankush ( @ankush-me ),

I'm trying to generate synthetic scene text images for Bangla language. However, the generated images have text with poor contrast or lot of blending, which makes it hard to detect even for humans. I think this could be possibly because of alpha-blending ? Could you please provide some insight on this ?

Here is an example of generated image.

[yash0307]

Here is another such example.

[ankush-me]

This is due to poisson blending -- the problem arises due to the background having higher magnitude of gradients than the foreground (text), as pointed out in #14. You could just do a simple alpha-blend when blitting text on "high-texture" backgrounds (can define "high-textureness" as being having high magnitude of gradients), or force the magnitude of gradients of the foreground to be higher than background's.

[anonymous2792]

Hi @yash0307
were you able to solve this problem. Can you kindly guide what changes are required in code to fix the blending problem?

[Lane689]

Hi @yash0307 , how did you put a different images in script?

[yash0307]

@Lane689, I am not sure if I understand the question correctly. Could you please elaborate?

[Didier0]

Hi @yash0307
Did you resolve the problem with color of text and background?