Bilinear texture filtering – artifacts, alternatives, and frequency domain analysis
https://bartwronski.com/2020/04/14/bilinear-texture-filtering-artifacts-alternatives-and-frequency-domain-analysis/ [bartwronski.com]
2020-04-15 13:10
In this post we will look at one of the staples of real-time computer graphics – bilinear texture filtering. To catch your interest, I will start with focusing on something that is often referred to as “bilinear artifacts”, trapezoid/star-shaped artifact of bilinear interpolation – what causes them? I will discuss briefly some common bilinear filtering alternatives and how they fix those, link a few of my favorite papers on (fast) image interpolation, and analyze the frequency response of common cheap filters.