Let’s say I have a 1080p image and a 1080p monitor. I assume that obviously that scenario would render exactly 1080 pixels in the vertical field across 1920 columns.
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But if I take that same image and zoom in by 1% to 49%, how would software or the monitor interpret the pixel count which can now seemingly no longer fit into the screen without some sort of interpolation? In the 1% scenario, how can all other pixels be complementarily boosted by ~1% while remaining in the typical grid-like configuration?
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Wouldn’t zooming in like that significantly degrade the quality of image to a greater extent than the percentage of zoom alone would indicate?
In: Technology
There are various different scaling algorithms which try to compute new pixels based on multiple pixels which were located around that location. There is a tradeoff between speed and image quality, and different algorithms give can be better for different kinds of content. Different people can also prefer different algorithms.
There is always a little bit of quality decrease, but if this is done properly it can be okay.
The simplest method is to just use the one pixel which was closest to that location. That’s called nearest neighbour. It is fastest but gives the worst result.
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