How to add a glare effect to a given photo

Is there any way to give a glare effect to a given image based on VOS(1984)?

I'd like to know if there are any libraries available in MATLAB or user functions that are being shared.

Answer 1

[Taru]

Hi,

I comprehend that you want to achieve a glare effect for a certain image. Since, you have not provided the image I can offer you methods to work your way through.

First, use thresholding to get a binary matrix (mask) which highlights the area on which the glare needs to propogate.

Ex:

mask=img<150;                                   %150 is just random value for the sake of example

Then, you can use the 'regionfill' function to get the glare effect.

fixedImage = regionfill(img,mask);

You can further modulate the contrast to get the desired effect.

[윤석 이]

Thank you for answer. Are there any functions that actually give glare effect?

Answer 2

[DGM]

There seem to be a number of papers, including the one you mention that propose methods for calculating/simulating disability glare. That said, I don't have access to any of those papers, and I don't see any existing File Exchange submissions that solve the task.

There are more naive and nontechnical ways to do what one would call "bloom", but I see that as a different set of goals.