Proj1WarpExamples

Here are some examples for nonlinear warps. Starting from this input picture

Here are examples of warps done using point sampling

Notice the jagged edges in the pictures. This is not always desirable.

Using bilinear interpolation instead produces smoother results

However, notice that the blurriness in the center of the fisheye warp is incorrect. This area should be sharper.

We get similar effects using gaussian kernel with fixed radius.

Finally, here are two examples done using a variable gaussian filter. These were produced using simple isotropic filtering