What is the reason for the moire pattern of the full-color LED display?

2023-08-14 10:00:49 Ddon Visual

  Many users found that the full-color LED display in the application process of strange phenomena,for example,the naked eye is very clear,but when using a mobile phone or camera to shoot,the picture will exist double shadow,drag shadow,moire phenomenon,what is the reason for this?Follow Ddon Visual in Shenzhen,China to take a look:

LED ring screen

  1、Pixel Misalignment:If the pixels on the LED display and the camera sensor do not align perfectly,they can create interference patterns when they overlap.This misalignment can lead to unwanted visual artifacts,including moirépatterns.

  2、Pixel Density and Resolution Mismatch:If the pixel density of the LED display and the camera sensor are not matched appropriately,the camera might capture the LED pixels at a different ratio than they are displayed.This can cause interference patterns and moiréeffects to appear in the recorded footage.

  3、Resolution Scaling:When capturing content from an LED display,the camera might use a different resolution than the display's native resolution.Scaling up or down can lead to pixel patterns not aligning correctly,resulting in moiré.

  4、Frequency Interference:Moirépatterns can also occur when there's a frequency interference between the LED pixel pitch and the camera's sensor.The interaction between the frequencies can produce visible interference patterns.

  5、Display Content Patterns:Certain display content,such as fine patterns or textures,can trigger moirépatterns when captured by a camera.These patterns may interact with the camera's sensor grid in unintended ways.

LED background screen

  To minimize or avoid moirépatterns in full-color LED displays,consider the following steps:

  1、Choose a camera with a resolution and sensor alignment that matches the display's pixel structure as closely as possible.

  2、Use appropriate camera settings and capture resolutions to avoid scaling issues.

  3、Adjust the camera's position and angle to minimize pixel misalignment.

  4、Avoid displaying content with fine patterns or textures that can trigger moiréeffects.

  5、If possible,use software or hardware anti-aliasing techniques to reduce interference patterns.

LED video wall

  To solve the above problems,it is necessary to carefully inspect and repair the LED display,check whether the hardware and circuit of the display itself operate normally,and then determine whether the signal source matches,adjust the refresh rate of the product and the video parameters,and eliminate environmental interference,if there is still ghost,shadow,moire phenomenon after the above practice.It is necessary to contact the manufacturer or professional technical personnel to solve the problem.China Shenzhen Ddon Visual focus on high quality full color LED display R&D user production and sales,if you have related product needs,welcome to call Ddon,we will provide you with perfect product solutions and quality service.

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