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AP CSP Unit 2

TermDefinition
Heuristic a problem solving approach (algorithm) to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible.
Lossless Compression a data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data.
Image A type of data used for graphics or pictures
Metadata Data that describes other data. For example, a digital image may 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.
Hexadecimal Number System A number system consisting of 16 distinct symbols — 0-9 and A-F — which can occur in each place value.
Lossless: A compression scheme in which every bit of the original data can be recovered from the compressed file.
Lossy A compression scheme in which “useless” or less-than-totally-necessary information is thrown out in order to reduce the size of the data. The eliminated data is unrecoverable.
Abstraction Removing unnecessary details to focus on the essential characteristics. To break problems up into separate parts which can then be solved separately and recombined to form a complete solution.
Created by: Dawn Cabrera
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