Design and implementation of parallax measuring apparatus for head-up display

Parallax test result is subjective and difficult to give quantitative results during head-up display (HUD) debugging process. Based on machine vision, a set of automatic HUD parallax detection device was developed. The device consists of a traditional optical system and a CCD optical coupling device. The CCD optical coupling device was manually adjusted to image the large field of view collimator reticule, the image was processed and parallax was given based on calculation. Comparing the results obtained from this device with those of manual testing, the results show that parallax instrument greatly improved the HUD parallax detection accuracy, which reaches 28.