Gray imaging principle of full-color LED display screen
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Gray imaging principle of full-color LED display screen
Gray scale of LED display screen is gray scale, which refers to how many shades a color can have from light to dark. For the display screen technology using data, the gray level is the decisive factor of the number of displayed colors. Generally speaking, the higher the gray level, the richer the colors displayed, the more delicate the picture, and the easier it is to show rich details.
Gray imaging principle:
The gray level of LED display screen mainly depends on the number of digital-to-analog conversion bits of the system. Of course, the video processing chip, memory and transmission system of the system should provide the support of the corresponding number of bits. At present, LED display screen mainly adopts:
1, 8-bit processing system, that is, 256(2 to the 8th power) gray scale. A simple understanding is that there are 256 brightness changes from black to white.
2, 10-bit processing system, that is, 1024(2 to the 10th power) gray scale. A simple understanding is that there are 1024 brightness changes from black to white.
3, 12-bit processing system, that is, 4096(2 to the 12th power) gray scale. A simple understanding is that there are 4096 brightness changes from black to white.
4, 14-bit processing system, that is, 16384(2 to the 14th power) gray scale. A simple understanding is that there are 16384 brightness changes from black to white.
How to identify the brightness level of LED display screen
The brightness discrimination level of LED display screen refers to the brightness level of the image that can be distinguished by human eyes from the darkest to the whitest. As mentioned above, the gray level of the display screen is very high, which can reach 256 or even 1024. However, due to the limited sensitivity of human eyes to brightness, these gray levels cannot be completely recognized. That is to say, many adjacent levels of gray scale may look the same to the human eye. And the eye resolution is different from person to person. For the display screen, the more grades people can recognize, the better, because the displayed images are for people to see after all. The more brightness levels the human eye can distinguish, the greater the color space of the display screen, and the greater the potential for displaying rich colors. The brightness discrimination level of LED display screen can be tested by special software, and the general display screen can reach more than 20 levels, which is considered as a better level.
At present, the so-called 4096-level gray scale or 16384-level gray scale or higher of some domestic LED display control system suppliers refer to the gray scale space size after nonlinear transformation. Class 4096 adopts the nonlinear transformation technology from 8-bit source to 12-bit space, while class 16384 adopts the nonlinear transformation technology from 8-bit to 16-bit. By nonlinear transformation of 8-bit source, the converted space is definitely larger than that of 8-bit source. Generally at least 10 digits. Just like gray scale, the bigger this parameter is, the better. Generally, 12 bits can do enough transformation.
Gray imaging principle of full-color LED display screen
Gray scale of LED display screen is gray scale, which refers to how many shades a color can have from light to dark. For the display screen technology using data, the gray level is the decisive factor of the number of displayed colors. Generally speaking, the higher the gray level, the richer the colors displayed, the more delicate the picture, and the easier it is to show rich details.
Gray imaging principle:
The gray level of LED display screen mainly depends on the number of digital-to-analog conversion bits of the system. Of course, the video processing chip, memory and transmission system of the system should provide the support of the corresponding number of bits. At present, LED display screen mainly adopts:
1, 8-bit processing system, that is, 256(2 to the 8th power) gray scale. A simple understanding is that there are 256 brightness changes from black to white.
2, 10-bit processing system, that is, 1024(2 to the 10th power) gray scale. A simple understanding is that there are 1024 brightness changes from black to white.
3, 12-bit processing system, that is, 4096(2 to the 12th power) gray scale. A simple understanding is that there are 4096 brightness changes from black to white.
4, 14-bit processing system, that is, 16384(2 to the 14th power) gray scale. A simple understanding is that there are 16384 brightness changes from black to white.
How to identify the brightness level of LED display screen
The brightness discrimination level of LED display screen refers to the brightness level of the image that can be distinguished by human eyes from the darkest to the whitest. As mentioned above, the gray level of the display screen is very high, which can reach 256 or even 1024. However, due to the limited sensitivity of human eyes to brightness, these gray levels cannot be completely recognized. That is to say, many adjacent levels of gray scale may look the same to the human eye. And the eye resolution is different from person to person. For the display screen, the more grades people can recognize, the better, because the displayed images are for people to see after all. The more brightness levels the human eye can distinguish, the greater the color space of the display screen, and the greater the potential for displaying rich colors. The brightness discrimination level of LED display screen can be tested by special software, and the general display screen can reach more than 20 levels, which is considered as a better level.
At present, the so-called 4096-level gray scale or 16384-level gray scale or higher of some domestic LED display control system suppliers refer to the gray scale space size after nonlinear transformation. Class 4096 adopts the nonlinear transformation technology from 8-bit source to 12-bit space, while class 16384 adopts the nonlinear transformation technology from 8-bit to 16-bit. By nonlinear transformation of 8-bit source, the converted space is definitely larger than that of 8-bit source. Generally at least 10 digits. Just like gray scale, the bigger this parameter is, the better. Generally, 12 bits can do enough transformation.
led display,display screen,lcd screen
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