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Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other digital data.
1,270 × 1,707 (494 KB) RodRabelo7: File:TrumpPortrait.jpg cropped 20 % horizontally, 17 % vertically, 33 % areawise using CropTool with lossless mode. File usage.
Like any resampling operation, changing image size and bit depth are lossy in all cases of downsampling, such as 30-bit to 24-bit or 24-bit to 8-bit palette-based images.. While increasing bit depth is usually lossless, increasing image size can introduce aliasing or other undesired artifa
The internationally recommended unit symbol for the kilobyte is kB. [ 1 ] However, in some areas of information technology , particularly in reference to random-access memory capacity, kilobyte instead typically refers to 1024 (2 10 ) bytes.
The term resolution is often considered equivalent to pixel count in digital imaging, though international standards in the digital camera field specify it should instead be called "Number of Total Pixels" in relation to image sensors, and as "Number of Recorded Pixels" for what is fully captured.
High Efficiency Image File Format (HEIF) is a digital container format for storing individual digital images and image sequences. The standard covers multimedia files that can also include other media streams, such as timed text, audio and video.
Raw image files are sometimes incorrectly described as "digital negatives".Like transparency film and unlike negative film, raw image pixels contain positive exposure measurements.
Isuzu D-Max or KB, a pickup truck; NZR K B class, a New Zealand steam locomotive; Other uses in science and technology. Boltzmann constant, k or k B;