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      • In signal processing, a lapped transform is a type of linear discrete block transformation where the basis functions of the transformation overlap the block boundaries, yet the number of coefficients overall resulting from a series of overlapping block transforms remains the same as if a non-overlapping block transform had been used.
      Lapped transforms substantially reduce the blocking artifacts that otherwise occur with block transform coding techniques, in particular those using the discrete cosine transform. The best known example is the modified discrete cosine transform used in the MP3, Vorbis, AAC, and Opus audio codecs.
      Although the best-known application of lapped transforms has been for audio coding, they have also been used for video and image coding and various other applications. They are used in video coding for coding I-frames in VC-1 and for image coding in the JPEG XR format. More recently, a form of lapped transform has also been used in the development of the Daala video coding format.


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    Lapped transform - Wikipedia

    In signal processing, a lapped transform is a type of linear discrete block transformation where the basis functions of the transformation overlap the block boundaries, yet the number of …

    de Queiroz, R.L Lapped Transforms.” The Transforms and …

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    LAPPED TRANSFORMS - queiroz.divp.org

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    Fourier, Block and Lapped Transforms - RWTH Aachen …

    Lapped transforms aim at reducing or even eliminating block artifacts by the use of overlapping basis functions, which extend over more than one block. The purpose of this chapter is to …

    Time Domain Lapped Transform and its Applications

    Time-Domain Lapped Transform V V V −1 V −1 DCT IDCT IDCT IDCT DCT DCT Q Q Q [Tran-2001] More compatible to DCT-based schemes Also a special case of linear phase filter banks …

    [PDF] ON LAPPED TRANSFORMS - Semantic Scholar

    This chapter covers the basic aspects of lapped transforms and their applications to image compression, and introduces block-based transforms and the principles of a block transform …

    Lapped transform - Wikiwand

    In signal processing, a lapped transform is a type of linear discrete block transformation where the basis functions of the transformation overlap the block boundaries, yet the number of …

    Lapped Transforms: A Graph-based Extension - IEEE Xplore

    Lapped transforms are transform coding tools with basis functions that overlap across blocks in order to reduce blocking artifacts. In this work, we take the uniform line graph model …

    [PDF] Extended lapped transforms: properties, applications, and …

    01 Nov 1992 · This chapter covers the basic aspects of lapped transforms and their applications to image compression, and introduces block-based transforms and the principles of a block …