[Radiance-general] Can you change the default colors in falsecolor images

[Shrikar Bhave]

HI Axel,

So far, I had not come across -pal and -palettes options! I will look into
it. Thanks for the command for the custom scales, that looks promising. My
initial reaction was I will need to tweak/play with the code for
falsecolor, but this looks like something I can actually do :)

Thanks a lot!

Shri


On Thu, Aug 28, 2014 at 4:32 PM, Axel Jacobs <jacobs.axel at gmail.com> wrote:

> Hi Shrikar,
>
> I suppose you have discovered the -pal and -palettes options, but this
> still doesn't give you what you want?
>
> You can create custom scales using the -r, -g and -b options.  Here is an
> example for a 3-step blue-yellow-white scale:
>
> falsecolor –ip picture.hdr –s 5000 –r ‘if(v-0.3,1,0)’ \
> –g ‘if(v-0.3,1,0)’ –b ‘if(v-0.3,if(v-0.7,1,0)1)’ > picture_fc.hdr
>
> It requires a bit of cal magic.  You may also look at the falsecolor code
> for inspiration.
>
> Best
>
> Axel
>
>
>
> On 28/08/14 21:20, Shrikar Bhave wrote:
>
>> Hello All,
>>
>> Got this unusual request. I am not sure how I can change that. Any
>> pointers?
>> Can I set custom colors based on say min/max and number of desired steps
>> in between?
>> I am looking at both Luminance and Illuminance falsecolor images.
>> Has anyone attempted that before, if yes, any examples?
>>
>> Thanks,
>>
>> Shri
>>
>> P.S> Apologies for my past emails with attachments, I promise I will be
>> diligent next time!
>>
>>
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>>
>
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