How to eliminate the water when the LED display screen ripple
We may have found that in the face of the LED display camera, often there will be water ripples, these lines in the photo, such as stuck in the throat, affecting people's vision. So, how does the water ripple on the display picture form it, and there is no way to let it disappear, this article is a discussion for everyone.
But the LED display on the water ripples, but did not get everyone's favorite, or even can be said to be disgusted. Especially in some meetings, studio, live activities and other large-scale use of camera and video occasions, the scene of the LED screen covered with water ripple to the original perfect activities through the pictures, video transmission, become flawed, it is not annoying The
The original beauty of the United States can complement each other, the results of the water ripple on the screen to drop a few grades. And serious water ripple to live screen marked with a natural mosaic, even the background are not on, completely lost the role.
Causing the water ripple is the reason for the use of LED display refresh rate is not enough, take pictures of the moment some of the LED display line is not lit, it produced a series of water ripples. To 1/4 sweep, equipped with ordinary cross-flow driver IC, refresh rate of 1000Hz screen, for example, set the camera exposure time of 1/1000 seconds, 1/500 seconds, 1/800 seconds, 1/2000 seconds, we take a look Photo simulation results.
It can be seen that only in the shutter speed of 1/500 seconds, all lines are lit twice, the brightness of the best shot out the best results. And 1/800 second and 1/1000 second shutter speed, there are some lines more lit 1 times, resulting in varying degrees of water ripples. More than 1/2000 sec in the shutter speed, half of the line is not lit, you can imagine the number of water ripples as much. So to achieve the refresh rate of more than 2 times the speed of the shutter speed shooting the best, no water ripple.
In the camera generally 1/2000 sec shutter speed, the ordinary cross-flow driver IC's near 1000 refresh rate and dual latch drive IC 1920Hz refresh rate, are not enough to avoid water ripple. Only have a refresh rate of more than 3840Hz high-definition high-level PWM driver IC, more protection LED display camera does not appear when the water ripple. Powerful color is equipped with a high-definition high-level PWM driver IC standard series LED rental display, refresh rate ≥ 3840Hz, water ripple, how to shoot how the United States.
In the fashion festival, forums, wedding applications, live television, outdoor opening activities, shopping malls indoor activities, conference and other applications, the face of a public camera, the camera guns short gun, with high refresh rate led display products still Show clear and beautiful, without a trace of water ripples, for customers to bring the ultimate visual experience.