Study on Method of Nozzle Assembly Alignment Based on Image Processing
Zhaoba Wang · Journal of Projectiles.Rockets.Missiles and Guidance · 2008
The alignment method by which solid rocket motor axis and nozzle axis are in alignment replace the artificial alignment with image processing technology was introduced.Pre-processing and binary for acquired image were conducted firstly,the round hole in the nozzle's surface was made as object,the single pixel edge of binary image was extracted by algorithm of morphology and was expressed by Freeman chain.An advanced Hough transform was used to solve the coordinate of circle center,and then adjusting the object according to the center deviation between image and circle.This method can solve practical assembly alignment problem perfectly.