Shaders and Texturing - An Introduction to Computer Graphics for Artists - page 196

Fig. 11.16 The camera angle in this shot causes some of the architectural decorations to block the
view of other parts of the building

Fig. 11.17 Photographs taken in low light or incorrect exposure settings will produce noise

eliminate completely because the color of the noise will depend on the color of
objects in the scene, which will vary. The best way to have a noise-free image is to
take the photo in good lighting conditions.

11.5.3.14 Conclusion

Once you have a good quality cleaned-up photograph, you can either use it as-is, or
use it as reference for a painted texture. There are two schools of thought on this. On
one side, there are artists who prefer to use photos as texture maps. The idea is that
photos are more realistic because they are more detailed and accurate than painted