Howtosignalprocessing
Which interpolation method is best for image?
If you are enlarging the image, you should prefer to use INTER_LINEAR or INTER_CUBIC interpolation. If you are shrinking the image, you should prefer to use INTER_AREA interpolation. Cubic interpolation is computationally more complex, and hence slower than linear interpolation.
How do you interpolate an image?
Image interpolation is generally achieved through one of three methods: nearest neighbor, bilinear interpolation, or bicubic interpolation. Since each method has its own merits and challenges, the choice of appropriate method is based on state of affairs.
