Design of Readability Improvement Control System for Electric Signboard Based on Brightness Adjustment

摘要

In the paper, when an image is displayed through an electronic signboard, all LED dots corresponding to each pixel constituting the image are output with a constant brightness. If the image contains various colors, the relatively bright color has a problem of being brighter than the dark color. In addition, since conventional electronic signboards display letters at a constant brightness regardless of the size of letters when displaying letters through a display board, there is a problem that relatively small letters are not visible compared with large letters. When displaying an image through a display board, we partially output the brightness of each dot of the display board differently according to various colors in the image, when letters are displayed through the electric sign board, the luminance is outputted differently according to the size of letters, we design a RICS system that can improve the readability of the information displayed through the electronic signboard.