Lines Matching refs:DCT
173 usefulness of DCT scaling as a means of data reduction and SmartScale as a
179 -- libjpeg: DCT scaling in compressor
181 There is no technical reason why DCT scaling could not be supported when
188 SmartScale is an extension to the JPEG format that allows for DCT block
197 additional DCT scaling factors.
201 This requires the DCT scaling feature, which is not supported.
204 This requires both the DCT scaling and SmartScale features, which are not
271 v6b. The one exception to this is when using the floating point DCT/IDCT, in
275 -- The SSE/SSE2 floating point DCT implementation in libjpeg-turbo is ever so
284 point DCT/IDCT algorithms are mainly a legacy feature, and they do not
291 floating point DCT/IDCT can depend on the compiler settings.
303 with its DCT/IDCT scaling algorithms rather than with a separate
331 Fast Integer Forward DCT at High Quality Levels
335 correct results whenever the fast integer forward DCT is used along with a JPEG
338 It is therefore strongly advised that you use the slow integer forward DCT