In recent years, the application of indoor LED full-color display screens in stadiums, road traffic, advertising, leasing, etc. has shown a rapid growth trend. The current market demand analysis believes that the necessity of on-site verification has become increasingly prominent.

The uniformity evaluation can be divided into factory evaluation, repair evaluation, service area evaluation and on-site evaluation.

Two on-site inspection methods:

1. The calibration method according to the running time of the LED full-color display: This is an early on-site verification method, which performs on-site verification of the display according to the stalking record of the running time of each LED module. According to the rough calculation when the LED is working, the uniform brightness attenuation of each LED is determined, and the different calibration levels are estimated, and then sent to each LED module for corresponding adjustment. This method does not require manual input. But this method ignores an important problem, that is, the LED attenuation frequency estimated from the running time is not applicable to every LED.

2. According to the site conditions, quickly collect the light color information of each pixel of the LED full-color display, compensate the actual attenuation of each LED light-emitting tube through related algorithms, and then use a special collection device to The light color information of each pixel of the LED full-color display is collected on site in real time, so as to achieve real common collection. Even for LED modules that cannot be collected at the same time in working status, pixel-level correction can be completed. After finishing, the display returns to the uniform display effect when it left the factory. Go back to Sohu for details.