The gray level of an outdoor LED display is mainly used to evaluate its color reality. By judging the brightness level from the darkest single primary color to the brightest, the gray level is used as the standard to evaluate the display color of the display. When the gray level is high, the display is rich and gorgeous; when the gray level is low, the color change is single. Therefore, the improvement of the gray level is beneficial to increase the color display level of the image and contribute to the improvement of the color depth.
The contrast of the display screen affects the visual imaging effect. High contrast improves the clarity of the picture and the bright colors, and effectively improves the image quality of the details, clarity, and gray level. In addition, the contrast also has a certain impact on the resolution conversion of the dynamic video. High contrast can make it easier for the naked eye to distinguish the light-dark conversion process in the dynamic image.
