In order to improve its performance,this paper proposes bicubic convolution template algorithm:make the bicubic interpolation discrete and infer 16 templates,in which the original real operations are replaced by integer operations.

Considering the problems existing in prefecture-level TV weather forecast program making,with the VB programming tool and the reflectivity factor data from new-gerenration radar,a TGA document series with an Alpha channel is generated,by means of the cubic convolution interpolation algorithm scaling.

To overcome the problems of the interpolation of the velocity and velocity derivative on non-grid during wavefront construction,a more accurate interpolation algorithm,called bicubic convolution interpolation,has been presented.

To solve this problem,we propose approximation algorithms including the nearest neighbour,bilinear and cubic convolution interpolation.

The PAL image is restored according to the imaging feature of panoramic annular lens,referenced to the highest resolution,adopt an interpolation method based on edge detection which adopts cubic convolution interpolation for edge and bilinear interpolation for non-edge.