[Radiance-general] Pcomb to mask an area of one image on to another

[Greg Ward]

Hi Chris,

Is it that your discriminator isn't segmenting the image as you would like?

It would help if  you gave the full command you are using.  Your expression snippet isn't a legal option to pcomb.

Cheers,
-Greg

> From: Christian Humann <chris at christianhumann.com>
> Subject: [Radiance-general] Pcomb to mask an area of one image on to another
> Date: February 29, 2016 4:45:58 PM PST
> 
> Greetings,
> 
> (apologies for the duplicate post which I errantly posted in haste the first time by using reply to another subject)
> 
> I’d like to write an expression within pcomb to mask the area of green trees in one  HDR fisheye scene and apply those selected pixels in the same location on a second image (both images are the same resolution).  Here’s an example of what I’m trying to do:
> https://gyazo.com/932e7a14d64c35bff1802bcd11acc053
> 
> I’m getting close, but just can’t quite get there with the correct syntax using a threshold value for green [ex: -e 'gi(1)-thres*gi(2)’]
> 
> Thanks,
> Chris
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