Challenge: check and adjust multicolour array of LEDs panel for luminosity, inspect their colour and position.
Difficulties: several different types of displays exist, integrate solution within existing electrical test board, make the non-dependent of camera resolution, luminosities of LEDs differ, they can be bent or twisted.
Solution: we build special container to achieve controlled lighting conditions, PC hardware NI LabWindows/CVI and Vision Development Module is used in solution, we utilize PCs parallel port to interact with the existing electrical test board, three special calibration LEDs are used to make the system independent of camera resolution, LED panel is thoroughly checked column-by-column, brightness of LEDs is adjusted, the panel luminosity is checked for uniformity. Smaller adjustments to the algorithm are made inside GUI, complete customization can be done via configuration file.