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Combined, these channels can produce approximately (

JPEG reduces file size by permanently discarding data that the human eye is less likely to notice, such as subtle variations in color. 24.jpeg

It uses a process called Discrete Cosine Transform (DCT) to convert image data into a mathematical form that is easier to compress. Combined, these channels can produce approximately ( JPEG

), which is often called "True Color" because it exceeds the number of colors the human eye can typically distinguish. How the JPEG Standard Works 24.jpeg