Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Discrete_cosine_transform> ?p ?o }
- Discrete_cosine_transform abstract "A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy compression of audio (e.g. MP3) and images (e.g. JPEG) (where small high-frequency components can be discarded), to spectral methods for the numerical solution of partial differential equations. The use of cosine rather than sine functions is critical for compression, since it turns out (as described below) that fewer cosine functions are needed to approximate a typical signal, whereas for differential equations the cosines express a particular choice of boundary conditions.In particular, a DCT is a Fourier-related transform similar to the discrete Fourier transform (DFT), but using only real numbers. DCTs are equivalent to DFTs of roughly twice the length, operating on real data with even symmetry (since the Fourier transform of a real and even function is real and even), where in some variants the input and/or output data are shifted by half a sample. There are eight standard DCT variants, of which four are common.The most common variant of discrete cosine transform is the type-II DCT, which is often called simply \"the DCT\". Its inverse, the type-III DCT, is correspondingly often called simply \"the inverse DCT\" or \"the IDCT\". Two related transforms are the discrete sine transform (DST), which is equivalent to a DFT of real and odd functions, and the modified discrete cosine transform (MDCT), which is based on a DCT of overlapping data.".
- Discrete_cosine_transform thumbnail Example_dft_dct.svg?width=300.
- Discrete_cosine_transform wikiPageExternalLink summary.php?id=e71-e_11_1095.
- Discrete_cosine_transform wikiPageExternalLink www.fftw.org.
- Discrete_cosine_transform wikiPageExternalLink pg=624.
- Discrete_cosine_transform wikiPageExternalLink 184410889..
- Discrete_cosine_transform wikiPageExternalLink fftw-paper-ieee.pdf.
- Discrete_cosine_transform wikiPageExternalLink ltfat.sourceforge.net.
- Discrete_cosine_transform wikiPageExternalLink DCT_TR802.pdf.
- Discrete_cosine_transform wikiPageExternalLink fft.html..
- Discrete_cosine_transform wikiPageExternalLink IDCT.
- Discrete_cosine_transform wikiPageExternalLink DCT-History-How-I-Came-Up-with-the-Discrete-Cosine-Transform.
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- Discrete_cosine_transform wikiPageWikiLink Advanced_Audio_Coding.
- Discrete_cosine_transform wikiPageWikiLink Amplitude.
- Discrete_cosine_transform wikiPageWikiLink Approximation_theory.
- Discrete_cosine_transform wikiPageWikiLink Boundary_value_problem.
- Discrete_cosine_transform wikiPageWikiLink Butterfly_diagram.
- Discrete_cosine_transform wikiPageWikiLink Category:Digital_signal_processing.
- Discrete_cosine_transform wikiPageWikiLink Category:Discrete_transforms.
- Discrete_cosine_transform wikiPageWikiLink Category:Fourier_analysis.
- Discrete_cosine_transform wikiPageWikiLink Chebyshev_polynomials.
- Discrete_cosine_transform wikiPageWikiLink Classification_of_discontinuities.
- Discrete_cosine_transform wikiPageWikiLink Clenshaw–Curtis_quadrature.
- Discrete_cosine_transform wikiPageWikiLink Cooley–Tukey_FFT_algorithm.
- Discrete_cosine_transform wikiPageWikiLink DV.
- Discrete_cosine_transform wikiPageWikiLink Daala.
- Discrete_cosine_transform wikiPageWikiLink Data_compression.
- Discrete_cosine_transform wikiPageWikiLink Data_point.
- Discrete_cosine_transform wikiPageWikiLink Discrete_Fourier_transform.
- Discrete_cosine_transform wikiPageWikiLink Discrete_sine_transform.
- Discrete_cosine_transform wikiPageWikiLink Discrete_wavelet_transform.
- Discrete_cosine_transform wikiPageWikiLink Domain_of_a_function.
- Discrete_cosine_transform wikiPageWikiLink Entropy_encoding.
- Discrete_cosine_transform wikiPageWikiLink Eulers_formula.
- Discrete_cosine_transform wikiPageWikiLink Even_and_odd_functions.
- Discrete_cosine_transform wikiPageWikiLink FFTPACK.
- Discrete_cosine_transform wikiPageWikiLink FFTW.
- Discrete_cosine_transform wikiPageWikiLink Fast_Fourier_transform.
- Discrete_cosine_transform wikiPageWikiLink Fourier_series.
- Discrete_cosine_transform wikiPageWikiLink Frequency.
- Discrete_cosine_transform wikiPageWikiLink Function_(mathematics).
- Discrete_cosine_transform wikiPageWikiLink GNU_General_Public_License.
- Discrete_cosine_transform wikiPageWikiLink Image_compression.
- Discrete_cosine_transform wikiPageWikiLink JPEG.
- Discrete_cosine_transform wikiPageWikiLink Karhunen–Loève_theorem.
- Discrete_cosine_transform wikiPageWikiLink Linear_combination.
- Discrete_cosine_transform wikiPageWikiLink Linearity.
- Discrete_cosine_transform wikiPageWikiLink List_of_Fourier-related_transforms.
- Discrete_cosine_transform wikiPageWikiLink Lossy_compression.
- Discrete_cosine_transform wikiPageWikiLink MATLAB.
- Discrete_cosine_transform wikiPageWikiLink MP3.
- Discrete_cosine_transform wikiPageWikiLink Markov_process.
- Discrete_cosine_transform wikiPageWikiLink Modified_discrete_cosine_transform.
- Discrete_cosine_transform wikiPageWikiLink Motion_JPEG.
- Discrete_cosine_transform wikiPageWikiLink Moving_Picture_Experts_Group.
- Discrete_cosine_transform wikiPageWikiLink Orthogonal_matrix.
- Discrete_cosine_transform wikiPageWikiLink Partial_differential_equation.
- Discrete_cosine_transform wikiPageWikiLink Periodic_function.
- Discrete_cosine_transform wikiPageWikiLink Power_of_two.
- Discrete_cosine_transform wikiPageWikiLink Quantization_(signal_processing).
- Discrete_cosine_transform wikiPageWikiLink Rate_of_convergence.
- Discrete_cosine_transform wikiPageWikiLink Real_number.
- Discrete_cosine_transform wikiPageWikiLink Signal_(electrical_engineering).
- Discrete_cosine_transform wikiPageWikiLink Sine.
- Discrete_cosine_transform wikiPageWikiLink Sine_and_cosine_transforms.
- Discrete_cosine_transform wikiPageWikiLink Slope.
- Discrete_cosine_transform wikiPageWikiLink Spectral_method.
- Discrete_cosine_transform wikiPageWikiLink Split-radix_FFT_algorithm.
- Discrete_cosine_transform wikiPageWikiLink Square_matrix.
- Discrete_cosine_transform wikiPageWikiLink Theora.
- Discrete_cosine_transform wikiPageWikiLink Trigonometric_functions.
- Discrete_cosine_transform wikiPageWikiLink Vorbis.
- Discrete_cosine_transform wikiPageWikiLink Windows_Media_Audio.
- Discrete_cosine_transform wikiPageWikiLink Winograd_FFT_algorithm.
- Discrete_cosine_transform wikiPageWikiLink File:DCT-8x8.png.
- Discrete_cosine_transform wikiPageWikiLink File:DCT-symmetries.svg.
- Discrete_cosine_transform wikiPageWikiLink File:Dct-table.png.
- Discrete_cosine_transform wikiPageWikiLink File:Example_dft_dct.svg.
- Discrete_cosine_transform wikiPageWikiLink File:Idct-animation.gif.
- Discrete_cosine_transform wikiPageWikiLink File:Letter-a-8x8.png.
- Discrete_cosine_transform wikiPageWikiLinkText "DCT".
- Discrete_cosine_transform wikiPageWikiLinkText "DCT-IV".
- Discrete_cosine_transform wikiPageWikiLinkText "DCT-based".
- Discrete_cosine_transform wikiPageWikiLinkText "Discrete cosine transform".
- Discrete_cosine_transform wikiPageWikiLinkText "Fast DCT".
- Discrete_cosine_transform wikiPageWikiLinkText "IDCT".
- Discrete_cosine_transform wikiPageWikiLinkText "block coding".
- Discrete_cosine_transform wikiPageWikiLinkText "block-transform".
- Discrete_cosine_transform wikiPageWikiLinkText "cosine".
- Discrete_cosine_transform wikiPageWikiLinkText "discrete cosine transform".
- Discrete_cosine_transform wikiPageWikiLinkText "discrete cosine transforms (DCT)".
- Discrete_cosine_transform wikiPageWikiLinkText "discrete_cosine_transform".
- Discrete_cosine_transform wikiPageWikiLinkText "iDCT".
- Discrete_cosine_transform wikiPageWikiLinkText "type-I DCT".
- Discrete_cosine_transform id "1469".
- Discrete_cosine_transform title "discrete cosine transform".