Straight line is the most basic element of graphics

and it is of great significance to study fast algorithm of line generating. On the basis of Bresenham algorithm

this paper considers and takes full advantage of the relativity between pixels in the same line

and can generate all the pixels in a pixel line every time. The new algorithm based on pixel line can guarantee the line precision to be the same as Bresenham algorithm

but can get higher speed and is easily for hardware implementation.