Abstract: Base on an optimized fast outspread theory, fisheye lens image can be transformed into omin-directional image. It works by transforming the coordinates with the bicubic interpolation and inner stitching. There is no need of stitching some photos taken by camera or using cylindrical theory and parameter of apparatus in this method. In the end, the effectiveness of the method is demonstrated by the final examples by way of MATLAB.

Key words: computer application, omni-directional image, fast outspread theory, fisheye lens image