Compression is when a picture is made smaller, it takes away such things as color, pixels and the image size is reduced to atempt to save memory. this makes it much faster to download an image but it does decrease the resolution so it may not look the same as it did when you viewed it on the internet, it also encodes data better so it takes up less Space on the computer.
Image capture can be done with a number of things, Such as cameras and tablets as they can capture an image and save it withought compressing it. another way of capturing an image is to use a scanner to scan it into the computer
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