Four-point interpolation for image zooming with edge preservation
Nailiang Zhao · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1998
A new adaptive algorithm for image zooming with edge preservation is proposed. The 4-point interpolation scheme is introduced to resample the original low-resolution image. By using the wavelet transform and inverse wavelet transform, edges in original image are extracted and restored to the final high-resolution image automatically.