[Insight-users] How to equalize the brightness of sequential images?

[Fucang Jia]

Hi Luis, hi everyone,

I am encoutering a problem, there are some serial section images, which were 
scanned by a digital camera. Due to the collection was not done in the same 
time and the background light are not the same. This problem does not affect 
registration in fact. But it affect the segmentation. I use Rescale and 
Normalize filter to adjust the image brightness, but the result seems not 
good. I wonder to know if there exists good method to equalize the 
brightness. And firstly, how to compute the brightness of an image, should 
convert RGB colorspace to HSV one and then compute the mean of V(value), or 
convert to HLS colorspace and compute the mean of the Lightness?

Thanks a lot!

Fucang






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