Magical Lotus

Bin Chen 2008

The Lotus Flower | Model/Texture/Scene | Photon Mapping | Environment | Participating Media | Tone Mapping | Bloom | DOF | Final Image

To add some mysterious glow, I added bloom (in C++) as a postprocessing step.  And I was a bit surprised by how much it adds to the scene.  The process of adding bloom:

First we have the orignal rendered image:

 

Blur it with a filter with certain radius:

Add these two images together, and normalize the color:

 

I found that simply adding the orignal image and the blurred image together might not be the best way to blend two images.  So I implemented a blend mode that is similar to the Screen blend mode in some photo editting tool.

After adding bloom: