Photographing for CG textures
This is a really basic guide for non 3d artists on how to take photos that can be used as texture maps.
Here is a basic check list that you should run through before you take a shot.
Get as 'flat on' to the subject as possible.
Here are a few examples:
want to take a picture of the window near the centre of the
photo as a texture. From this viewpoint the window is to small
to be of much use, you need to get closer.
we're nice and close but as we are not directly in front of the window
the perspective is going to cause problems. This can be corrected in photoshop,
but this is less than ideal.
we're in front of the window but a bit to low, also using a wide angle lens
causes pincushion distortion.
better, long lens, flat on to the subject. The only problem is
the crisp shadows.
Perfect. The sun's gone in which gives a much more even illumination.
sample, this time a table top.
Nice even illumination of the surface but we need to be
flat on if possible.
but as you can see the shadow across the
surface will create problems.
the table has been moved out of the sun
so we have a more even illumination.