Bi-Cubic Interpolation Algorithm for Image Scaling

Question

I\'m trying to write a basic bicubic resize algorithm to resize a 24-bit RGB bitmap. I have a general understanding of the math involved, and I\'m using this i

Answer 1

You should switch the x and z when you call getpixel, and in getpixel you should index the array using:

[(y * 3 * src_width) + (3 * x) + channel]