FIELD: information technology.
SUBSTANCE: described are methods for efficiently performing full and scaled transformations with data received through full and scaled interfaces, respectively. Full transformation is transformation which realises full mathematical description of transformation. Full transformation operates with or provides full transformation coefficients. Scaled transformation is transformation which operates with or provides scaled transformation coefficients which are scaled versions of full transformation coefficients. Scaled transformation can have less computational complexity, while full transformation can be easier to use through versions of applications. Full and scaled transformations can be for 2D IDCT, which can be realised by a separate method with 1D IDCT transformations. Full and scaled transformations can also be for 2D DCT, which can be realised by a separate method with 1D DCT transformations. 1D IDCT transformations and 1D DCT transformations can be realised by a computationally efficient method.
EFFECT: reduced complexity of coding equipment.
26 cl, 16 dwg
