[Radiance-general] Pvalue for converting to luminance

[chang cw]

HI greg,

Thanks, i believe for RGB, the conversion to radiance units is the same factor ?

I think as compared to PFSview, the pixels for Pvalues are shifted -1
-1 for x and y.

Thanks

Cw

On Sat, Sep 6, 2008 at 12:15 PM, Greg Ward <gregoryjward at gmail.com> wrote:
> Hi Chew,
>
> Yes, pvalue -o -b * 179 and the ximage 'l' command should report the same
> values for the same pixels, though it's a bit difficult to know if you are
> in fact checking the same pixels -- the ximage 'p' command can help with
> that.
>
> I guess this is moot since you couldn't compile ximage.  I believe Ecotect
> offers a Windows-ready substitute free of charge.
>
> Best,
> -Greg
>
>> From: "chang cw" <solomoncw76 at gmail.com>
>> Date: September 5, 2008 7:39:49 PM PDT
>>
>> Hi Greg,
>> Thanks for replying so fast.
>> So i assume that the value read off from ximage is the same at that
>> from pvalue ?
>>
>> Using -b -o option  and a factor of 179 ?
>> Sorry but i could get not the radiance source compiled for ximage ;(
>>
>> Thanks
>> Chew Wai
>
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