10-bit lin

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Categories: Digital Basics, Images

A type of digital sampling of analog images that creates 10-bit (210, 1024 possible levels) numbers to describe the analog brightness levels of an image. Lin, short for ‘linear’ means the levels are assigned evenly to the levels of the analog signal they describe. So an LSB change describes the same change in level if it is in a bright area or a dark area of the picture. Most professional HD and some SD television is sampled this way according to ITU-R BT.601 and 709. 10-bit lin sampling allows good quality to be maintained through TV production and post production where the processes can make particular demands outside the range of normal viewing, and so produces good results for viewers. However if color grading is required then the wide dynamic range that can be described by 10-bit log would be more useful, or indeed one of the newer high dynamic range formats.

See also: 10-bit log, Gamma, Color Space