Color correction for "Fast Bilateral Filtering" tone mapping
The results below compare the results of the
original tonemapping based on the bilateral filter [Durand and
Dorsey, 2003] with the same algorithm that has been extended with our
color correction formula based on the experimental data. Each row
shows the results for different base contrast
compression.
The middle columns shows a reference, not
modified image. In case of HDR images, this is the best exposure
correction (manually selected).
To observe
While the
algorithm produces satisfactory results for default parameters
(base=5), color correction is necessary for strong contrast
compression (base=2).
Additional comments
Note that on some displays
(especially LCD) color appearance may change depending on the position
on the screen and viewing direction. For the best viewing, make sure
that the screen is seen from the perpendicular angle. If you see a
difference between reference images in the middle column (they are the
same), try scrolling the page.
The color matching
criterion is the image that appears the closest to the reference
image. The critertion IS NOT the preferred or the most natural
image.
Click on an image to see its
full size version. To compare two or more images, open them in
separate tabs in your browser, then altrenate between the tabs.
Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 



Low base contrast (base = 2) 
Original algorithm 
Reference 
With color correction 
Typical base contrast (base = 5) 


