Discrete Cosine Transform

URI: https://gptkb.org/entity/Discrete_Cosine_Transform

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:transformation
gptkbp:abbreviation	gptkb:DCT
gptkbp:application	audio compression image compression pattern recognition video compression watermarking
gptkbp:basisFor	cosine
gptkbp:category	gptkb:transformation orthogonal transform unitary transform
gptkbp:designer	gptkb:Inverse_Discrete_Cosine_Transform
gptkbp:dimensions	3D 2D 1D
gptkbp:field	gptkb:signal_processing data compression image processing
gptkbp:form	cosine functions
gptkbp:hasWikipediaPage	https://en.wikipedia.org/wiki/Discrete_cosine_transform
https://www.w3.org/2000/01/rdf-schema#label	Discrete Cosine Transform
gptkbp:input	real numbers
gptkbp:introducedIn	1974
gptkbp:inventedBy	gptkb:Nasir_Ahmed
gptkbp:notableFor	high compression ratio in JPEG low computational complexity minimizing block artifacts
gptkbp:output	real numbers
gptkbp:property	orthogonality energy compaction real-valued output
gptkbp:relatedTo	gptkb:Fourier_Transform gptkb:Discrete_Fourier_Transform gptkb:Fast_Fourier_Transform
gptkbp:supportsAlgorithm	gptkb:Fast_Fourier_Transform gptkb:Hadamard_Transform gptkb:Karhunen–Loève_Transform gptkb:Walsh–Hadamard_Transform
gptkbp:type	gptkb:DCT-I gptkb:DCT-II gptkb:DCT-III gptkb:DCT-IV
gptkbp:usedIn	gptkb:AAC gptkb:JPEG gptkb:MP3 gptkb:MPEG
gptkbp:bfsParent	gptkb:JPEG
gptkbp:bfsLayer	5