The resolution selection of LED outdoor large display needs to consider a number of factors, and the appropriate resolution depends on the viewing distance, display size, application scenarios and budget. Here are some suggestions:
1. the concept of resolution and influencing factors
Resolution definition
Resolution refers to the number of pixels in the horizontal and vertical directions on the display screen, usually expressed in the form of "width × height", such as 1920×1080. The higher the resolution, the sharper the image and the more detail it can show.
Factors affecting resolution selection
Viewing distance: This is one of the key factors in determining resolution. In general, the greater the viewing distance, the lower the resolution requirements. For example, if the display is on the side of a highway and the viewer is watching from a distance, a lower resolution may be sufficient. On the contrary, if the display is in a crowded place such as a mall or square, the audience may be watching at a closer distance, which requires a higher resolution to ensure the clarity of the image.
Display size: Larger displays require higher resolution to maintain the sharpness of the image. If the resolution is too low, the image will appear blurry and coarse. For example, if the resolution of a huge outdoor LED display is only 800×600, the image will have a clear sense of pixel when viewed at close range.
Application scenario: Different application scenarios have different resolution requirements. For example, displays used to show advertisements and promotional videos may require higher resolution in order to attract viewers' attention and show more detail. For displays that display simple information such as time, temperature, announcements, etc., a lower resolution may be sufficient.
Budget: Higher resolution usually means higher costs, including the price of the display itself, the cost of the control system, and the cost of installation and maintenance. Therefore, budget is also an important factor to consider when choosing a resolution.
2. the appropriate resolution in different scenarios is recommended
View scene from a distance
For scenes viewed from a distance such as highway billboards and the exterior walls of large stadiums, the viewing distance is usually dozens or even hundreds of meters. In this case, the resolution can be relatively low, such as 1024×768 or 1280×960. This can ensure the clarity of the image when viewed at a distance and reduce the cost.
For example, a large LED display beside a highway has a size of 20 meters ×12 meters and a viewing distance of more than 50 meters. Choose 1280×960 resolution, at such a distance, the image can still clearly convey the advertising message, and the cost is relatively low.
View the scene from a medium distance
The viewing distance of the scene such as the external wall of the shopping mall and the square is generally between ten meters and dozens of meters. At this point, the resolution can be appropriately increased, such as 1920×1080 or higher. This ensures that the image has a high degree of clarity and fineness when viewed at a medium distance.
For example, the LED display on the exterior wall of a shopping mall has a size of 15 meters ×8 meters, and the viewing distance is between 10 meters and 30 meters. Choosing a resolution of 1920×1080 can meet the audience's requirements for image quality when viewing at a medium distance, and can also better display the promotional information and brand advertising of the mall.
See the scene up close
For close viewing scenes such as exhibitions and indoor events, the viewing distance may be within a few meters. In this case, very high resolutions such as 2K (2560×1440), 4K (3840×2160) and beyond are required. This ensures that the image is pixel-free even when viewed up close, presenting a very sharp effect.
For example, the indoor LED display in an exhibition center has a size of 8 meters ×4.5 meters, and the viewing distance is between 1 and 5 meters. Choose 4K resolution, can provide the audience with the ultimate visual experience, better display product details and promotional content.
3. Other issues to consider
Content adaptation
After selecting the appropriate resolution, you also need to make sure that the content you play can adapt to that resolution. If the video, pictures and other content resolution is too low, even if the resolution of the display is very high, it can not achieve the best display effect. Therefore, when choosing the resolution, it is necessary to take into account the resolution of the commonly used playback content, and try to choose a resolution that is compatible with most of the content.
Control system and signal transmission
High-resolution displays require more powerful control systems and faster signal transmission. When selecting the resolution, it is necessary to ensure that the control system can support the selected resolution, and the signal transmission is stable and reliable, and there will be no problems such as stalls and flower screens.
Future scalability
Taking into account possible future demand changes, the choice of resolution can be appropriate to leave room, choose a resolution with a certain scalability. In this way, even if higher resolution is needed in the future, it can be achieved by upgrading the control system and the display screen, etc., without the need to completely replace the entire display system.
In summary, the resolution selection of LED outdoor large display needs to consider factors such as viewing distance, display size, application scenarios and budget. In the actual selection, it can be weighed and adjusted according to the specific situation to achieve the best display effect and cost performance.
