or the variable-spray control system based on
machine vision, it is highly required to real-time image
acquisition, processing as well as drive the actuator rapidly and
stably. To reduce the developing cycle and programming
difficulty, VB program language is used for its high executive
efficiency to collect real-time information and control signals;
meanwhile, MATLAB software is adopted for its excellent image
processing function. Requirement of fast reaction for the control
system is satisfied with COM component, it is introduced to
combine VB and MATLAB to control variable-spray system, and
it provides the foundation for future development and
application.