Regular pictures taken with phones range from about 10Kb to a couple hundred Mbs but today I see a post about a picture of brain tissue with a file size in petabytes. I also know that some NASA pictures are very large(dunno why) but even that makes more sense than a zoomed in pic of brain tissue. Obviously the instruments used are different but why such a large difference.
In: Technology
At its very simplest, an image will need to store the three colors that make up each pixel. For standard color space, that takes 24 bits, which is 3 bytes. A 4K image has 3840 * 2160 = 8,294,400 pixels. That means a 4K image would require 24,883,200 bytes = 24.8832 megabytes. There are various compression techniques to reduce the size, and some kinds of images compress much better than others, but that’s your basic math.
Latest Answers