What exactly is dpi?

We often hear dpi determining image quality, but do you know what dpi represents?


DPI is an abbreviation of dots per inch, which means the number of dots that can be displayed or output per inch. It is often used to indicate the resolution unit on printing and scanning. For example, 200dpi means 200*200=40,000 dots per square inch. Generally speaking, the higher the DPI value, the better the image is, the scanned images with 600 dpi will look more realistic compared to the 200 dpi.


Do you understand the meaning now?


See you next time on the technical term introduction lecture 🙂

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