These slides confused me, here's what I noted in case it help you
Bilinear Interpolation: A technique used to estimate the value of a point within a two-dimensional grid by considering the values of its four nearest neighbors. It's essentially a fancy way of averaging those neighboring values
kalebdawit
Here's a Youtube video that I found helpful in breaking down bilinear filtering:
It also covers bicubic samples which I found interesting.
stephanie-fu
Related to the bicubic sampling reference ^ I've found bicubic interpolation to be more helpful when visual contrast is important because it can overshoot beyond its two endpoints. In some applications this may not be allowed, but for a visually-pleasing upsampled image it can actually be better.
These slides confused me, here's what I noted in case it help you
Bilinear Interpolation: A technique used to estimate the value of a point within a two-dimensional grid by considering the values of its four nearest neighbors. It's essentially a fancy way of averaging those neighboring values
Here's a Youtube video that I found helpful in breaking down bilinear filtering:
https://www.youtube.com/watch?v=_htjjOdXbmA&ab_channel=javidx9
It also covers bicubic samples which I found interesting.
Related to the bicubic sampling reference ^ I've found bicubic interpolation to be more helpful when visual contrast is important because it can overshoot beyond its two endpoints. In some applications this may not be allowed, but for a visually-pleasing upsampled image it can actually be better.