Patent ID: 9218655
Filing Date: 2015-12-22
Classification: G06T

Abstract:
1. A brightness measuring method of device with backlight, performed by a controlling device to measure a legend of backlight provided by a backlight module of a device under test (DUT), the method comprising: turning on a uniform light source external to the DUT so as to illuminate the DUT; indicating to capture an image of the DUT illuminated with the uniform light source as a base image; receiving the base image; identifying a complete pattern of a to-be-measured legend in the base image; turning off the uniform light source while turning on the backlight of the DUT, so as to let the backlight illuminate the DUT; indicating to capture an image of the DUT illuminated with the backlight as a comparison image; receiving the comparison image, wherein the scope of the comparison image overlaps the scope of the base image; and calculating the brightness values for a plurality of pixels in the comparison image whose positions overlap the positions of the complete pattern so as to obtain a backlight brightness of the legend.