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The difference between video resolutions 1080P, 1080i, 2k, 4k

The difference between video resolutions 1080P, 1080i, 2k, 4k

The difference between video resolutions 1080P, 1080i, 2k, 4k

Our common video resolutions are 720P, 1080P, 1080i, 2k, 4k, etc. So many names may make people confused. The following is to explain:
 
What is about "P" and "i"?
 
720P, 1080P and 1080i, usually we say that there is always a P after the resolution, so what does this P mean? With the development of video imaging technology, there are two kinds, one is progressive scanning, and the other is interlaced scanning. Progressive scanning means that when the display screen is displayed for scanning, it is performed line by line from the first line in the upper left corner of the screen, and the entire image is scanned once. Therefore, the image display screen flickers small and the display effect is good. Most of the current advanced displays use progressive scanning. In the imaging technology of the consumer electronics field, there are more progressive scan applications, so we often hear 1080P resolution.
 
Interlaced scanning refers to i after 720i and 1080i, which is another scanning method, that is, each field contains all odd or even scan lines in one frame, usually scanning odd lines first to get the first field. And then scan the even lines to get the second field. The display effect is not as good as the line-by-line, but it has been widely used in the past, and it is currently used in security monitoring and other industries.
 
What is about "K"?
 
k is a higher-definition video resolution introduced in recent years, 2K, 4K, etc., which means "the total number of columns of video pixels", such as 4K, which means that the video picture has 3840 or 4096 columns of pixels. The 4K resolution camera usually has 3840*2160 or 4096*2160 pixels. Therefore, the display effect will be more clear. However, the limit that the human eye can actually recognize is basically 1080P. After that, there will not be much experience improvement. However, such high pixels have certain advantages for advertising and other aspects!
 
The above is descriptions about the video resolution 1080P, 1080i, 2k, 4k, I hope it will help you a better understand on the video resolution information.