Implementing the image processing algorithm
Various image processing algorithm can be implemented flexily.
Simple Canny filter can be implemented by using comp engine twice.
（Label engine is used when line traced in hysterisis needs to be accurate.)
Hough transform（Straight line extraction）is performed by P-Cube by generating
characteristic image, and implemented by scanning of high luminance points
by comp (Can obtain the slant and segments of straight line). Here provide
sample code of P-Cube.
The loop will be initiated by micro packet processor, so the user just needs to provide parameters of the engine as program.
[1st pass] cycle=２ commands×Screen size ／processor num.
[2nd pass] cycle＝7 commands×Extract num.／processor num.