So you've finally created a great model, staged a dramatic scene, and waited patiently for your final render. Well, probably not. Almost all rendered images can benefit from some amount to post-production processing. In this module, you will learn about important image enhancement techniques. After Equalization Sometimes called tone adjusting, equalization is to images what Dolby sound expansion is to audio.
Every image has a maximum and a minimum color value.
Some images may have very low contrast and have maximum and minimum values close to each other. As a general rule, all pictures should make use of the entire range of values available either on a monitor or in print. The equalization process analyzes an image to determine it's maximum and minimum colors and computes a mathematical formula to stretch all the image's colors so that the new maximum and minimum are exactly pure black and white. It is nearly impossible to set up a 3D scene to render an image that is already properly equalized. Concentrate instead on achieving the right mood and lighting effects without washing out highlights and shadows during rendering then use an image processing program to correct the tonal range of the results.