Im trying to learn Computer Graphics. I have the following statement
For the representation of vector images, we assume that a typical image consists of 500 lines [BHS91]. Each line is deﬁned by its coordinates in the x direction and the y direction, and by an 8-bit attribute ﬁeld. Coordinates in the x direction require 10 bits (log 2 (640)), while coordinates in the y direction require 9 bits (log 2 (480)). Bits per line = 9bits + 10bits + 9bits + 10bits + 8bits = 46bits
I dont understand how Bits per line = 9bits + 10bits + 9bits + 10bits + 8bits = 46bits is calculated can someone explain with a little bit demonstration.