can any one give me mat lab code of E spline and Lanczo's interpolation without inbuilt code

I am working on Interpolation in Image processing. For this I need fundamental interpolation algorithm matlab code without 'inbuilt' function. My paper is 'Fast digital zooming system using directionally adaptive image interpolation and restoration'.

[Jan]

The name of your paper is not really useful. Do you want all readers to search it in the internet, download and read it? Please show some own effort and present, what you have tried so far and explain, what exactly the problem is.

[Walter Roberson]

without inbuilt tells us that your interest is not in using the technique for research (because then you would not care about implementation as long as it was efficient .) It tells us that you have been assigned implementation of the paper as aa project -- and that you are asking that someone writes your project for you.

[hena sharma]

No, I only tried to write the code without using Inbuilt code . So that I can do adaptive E-spline and adaptive Lanczos interpolation. This, I can use for research.

[Walter Roberson]

Why do you care if it uses inbuilt functions as long as it does the job ?