rlk/envtools

Utilities to manipulate spherical images

envtools's Issues

32bit float tif format

hello,

i'm trying to use envtoirr.c but when i convert (imagemagic tool) your cube.tif like this:

$> convert etc/cube.tif -depth 32 -define quantum:format=floating-point cube-float.tif

cube-float.tif looks ok in osx Preview.

$> ./envtoirr -n 128 -f cube-float.tif cube-irr.tif
Spherical harmonic coefficients:
0.09265 0.08183 0.05268
-0.02050 -0.02379 -0.01875
0.01137 0.01039 0.00868
-0.00058 0.00017 0.00088
-0.01319 -0.01128 -0.01012
0.00549 0.00483 0.00035
-0.00869 -0.00703 -0.00668
-0.01011 -0.00871 -0.01014
-0.00062 -0.00123 -0.00239

this values are so low and produce almost black irradiance map. I know it's probably problem in conversion, but tif format has so many options and i don't know what could be wrong. How should look like etc/cube.tif in 32bit float format? How do you convert to this format?

Explanation about dome remapping

Hello. Could you please explain why if I apply remap to the rect picture, I get a fully circular dome, that can be used as a texture in a hemisphere 3D object:

./envremap -i rect -o dome etc/rect.tif out/out3.tif

However, if I remap the fisheye (hemi) to dome, I get half of circule projection:

Could you please explain how can I remap a fisheye 180 degrees picture to a dome image? So I can apply it as a texture to a 3D object:

What camera types were used to take the pictures in etc/ ?

In special, I am curious about the rect picture.

What camera was used to output this image?

Licensing ?

I made a package for ArchLinux, but I couldn't find what license you'd like to use.

Right now it's listed as unknown, which means the default copyright laws apply.

need support for cuda to have better performance

do you need if there are faster alternatives?
I need to transform rect to cube 👍