[Radiance-general] How to get extreme values from a falsecolor image

[Axel Jacobs]

Vaib,

it's
'-s a', not '-a'
the following work, too:
'-s auto' and '-s Auto' (anything that starts with uppercase or lowercase 'a')

Regards

Axel


On 5 February 2014 17:24, Vaib <vaibhavjain.co at gmail.com> wrote:
> Thank you Rob.
>
> Am I doing it wrong? -a option is a "bad option" :) Not valid argument I
> mean..
>  $ falsecolor -i foo.hdr -s 1000 -n 10 -l Lux -a > bar.hdr
>
> And pextrem doesn't take HDR file. I have to work with HDR, as it has
> conversion libraries in Java.
>
> Vaib
>
>
> On 5 February 2014 17:50, Guglielmetti, Robert
> <Robert.Guglielmetti at nrel.gov> wrote:
>>
>> Hi Vaib,
>>
>>
>>
>> A couple of things:
>>
>>
>>
>> Thing One: there is an -a option, which "autoscales" the max value for the
>> scale to peak at the max value found in the image.
>>
>> Thing Two: yes, you can use pextrem to get the min and max values (in
>> Rr,Rg,Rb) printed to the command line.
>>
>>
>>
>> - Rob
>>
>>
>>
>> From: Vaib [mailto:vaibhavjain.co at gmail.com]
>> Sent: Wednesday, February 05, 2014 9:39 AM
>> To: Radiance general discussion
>> Subject: [Radiance-general] How to get extreme values from a falsecolor
>> image
>>
>>
>>
>> Hello everyone,
>>
>>
>>
>> Falsecolor's documentation states that "The -e option causes extrema
>> points to be printed on the brightest and darkest pixels of the input
>> picture."
>>
>>
>>
>> Is there any way to output (not print on image) the extrema values? This
>> could be helpful in appropriately scaling the "scale".
>>
>>
>>
>> Thank you!
>>
>>
>>
>> Best regards,
>>
>> Vaib
>>
>>
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>
>
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