Hi guys,
If anyone has any experience with image processing, was wondering if you could help explain how I would go about upsampling an image by x2, I can easily get my head around nearest neighbour but have been searching for hours and hours for bilinear and bicubic interpolation, I've looked at Wikipedia and dozens of other sites, but can't quite see which pixels are being placed where in the upsampled image.
I've tried using the 4 diagonal pixels to generate a centre pixel and then from that using the cross 4 pixels to fill in the remaining blank pixels, but compared this method with Matlab and Gimp which produce different results to mine (better looking too)
Many thanks for help on this!
If anyone has any experience with image processing, was wondering if you could help explain how I would go about upsampling an image by x2, I can easily get my head around nearest neighbour but have been searching for hours and hours for bilinear and bicubic interpolation, I've looked at Wikipedia and dozens of other sites, but can't quite see which pixels are being placed where in the upsampled image.
I've tried using the 4 diagonal pixels to generate a centre pixel and then from that using the cross 4 pixels to fill in the remaining blank pixels, but compared this method with Matlab and Gimp which produce different results to mine (better looking too)
Many thanks for help on this!
