U2L5 Lossy Compression and File Formats.pptx - Vocabulary...

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Vocabulary byte - The technical term for 8 bits of data. The standard fundamental unit (or “chunk size”) underlying most computing systems today measured in “megabytes”, “kilobytes”, “gigabytes”, etc. Image - A type of data used for graphics or pictures. metadata - is data that describes other data. For example, a digital image my include metadata that describe the size of the image, number of colors, or resolution. pixel - short for "picture element" it is the fundamental unit of a digital image, typically a tiny square or dot which contains a single point of color of a larger image. RGB - the RGB color model uses varying intensities of (R)ed, (G)reen, and (B)lue light are added together in to reproduce a broad array of colors. Lossless Compression - a data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data. Lossy Compression - (or irreversible compression) a data compression method that uses inexact approximations, discarding some data to represent the content. Most commonly seen in image formats like .jpg.

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