[Radiance-general] Create constant radiance image

[Guglielmetti, Robert]

Hi Marija,

You could do this with pcompos. The -b option is used for specifying the
radiance:

pcompos -x 1200 -y 800 -b r g b

Basically, you're using pcompos but not composing anything but a background,
the color of which is specified with that -b option.

- Rob

On 1/5/10 4:56 AM, "Marija Velickovic" <maricanis at gmail.com> wrote:

> Hi,
> 
> Happy New Year to all members and their families!
> 
> Is there some easy 'one command' way to create Radiance image with all pixels
> set to some constant value?
> 
> Equation like this works, where in dat file are listed pixel values
> pvalue -r -h +Y 9 +X 5 -d pixel_file.dat > uniform_image.hdr
> 
> But I need images of various resolutions, so not much sense to create dat file
> with 1024x1024 or so, equal pixels as input for pvalue.
> 
> Is there some way to give some constant radiance value and resolution on input
> of pvalue or some other program to create such images?
> 
> I tried creation of small image as above and then make it bigger with pfilt,
> but if image is completely black (all 0 pixels) for example, pfilt can't 
> filter it.
> 
> Thanks,
> Marija.
> 
>