When you’re shading an image, do the RGB values change equally in the shaded area?
Yo, I’m a programmer and currently working on an algorithm for computer vision. In essence I want to recognize patterns in the color values of an image by checking if the RGB values increase or decrease in certain areas.
When you want to make your images brighter or darker, are the red, green and blue values similar to eachother? For example if you want to make something darker would it look something like red=0, blue=0, green=0 and alpha=x... or is it more complex than that depending on what you’re trying to achieve? And does the same apply if you want to make it brighter?
It would be easy to solve if I had source images for this but sadly I don’t. Any input you have is appreciated!
When you want to make your images brighter or darker, are the red, green and blue values similar to eachother? For example if you want to make something darker would it look something like red=0, blue=0, green=0 and alpha=x... or is it more complex than that depending on what you’re trying to achieve? And does the same apply if you want to make it brighter?
It would be easy to solve if I had source images for this but sadly I don’t. Any input you have is appreciated!
Replies
But to the original question, often the values are tinted different hues when brightening or darkening, depending on whether it was done in 3d using lighting with different colored lights, or in 2D using paint with warm/cool colors.
Some examples, with explanations: http://spiff.rit.edu/richmond/mt/tutorials/jansson/www.itchstudios.com/psg/art_tut.htm#light_stuff