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Adaptive Interpolation in Images, IEE Colloquium on

Date 28 May 1991

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  • Vector assisted spatial interpolation

    Publication Year: 1991, Page(s):6/1 - 6/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (200 KB)

    The technique of vector assisted spatial interpolation has been developed to reduce the effects of alias frequencies when images are spatially interpolated. A simple example is the conversion of video fields to frames, in the generation of stills or slow motion from an interlaced source. If only intra-field processing is considered the usual approach is to use a vertical interpolator. This can int... View full abstract»

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  • Adaptive interpolation of image pyramids for low bit-rate video

    Publication Year: 1991, Page(s):2/1 - 2/4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (196 KB)

    A pyramidal video compression technique has been developed with a VLSI implementation in mind. This technique is computationally simple and makes use of the multi-resolution properties of pyramids to adaptively interpolate received images. The interpolation is adaptive in two ways, only moving parts of the image are interpolated and the depth of interpolation is dependant on the amount of motion b... View full abstract»

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  • Motion-adaptive standards conversion for broadcast applications

    Publication Year: 1991, Page(s):5/1 - 5/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (240 KB)

    The problem with conventional motion detectors is that the switching from one mode to another is quite noticeable and manifests itself as a variation in vertical detail depending on whether or not an object is moving. A method is described which minimises these switching artefacts whilst maintaining a maximum of vertical resolution in static and moving picture areas. This method is equally applica... View full abstract»

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  • Block-structured interpolative coding of image sequences based on noncausal models

    Publication Year: 1991, Page(s):1/1 - 117
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (608 KB)

    With the popularity of transform-based coding algorithms and the fact that they can now be implemented at real-time video sampling rates, interpolative coding techniques are thought to be worthy of re-examination. The convenience of a block-based coding algorithm should not be overlooked, it can provide the basis for: parallel processing, block concealment in the event that channel errors are dete... View full abstract»

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  • Improving upon the HD-MAC algorithm for HDTV bandwidth compression

    Publication Year: 1991, Page(s):7/1 - 7/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (288 KB)

    The European Eureka 95 project (for the development of HD-MAC) has as one of its main areas of activity the evolution of a suitable algorithm. Different algorithms have been developed and demonstrated by Eureka members in the past and now a provisional system has been chosen. The performance of the proposed HD-MAC algorithm has aroused much interest. It is well matched to the characteristics of pr... View full abstract»

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  • Real time TV image compression using motion-compensated frame prediction and interpolation

    Publication Year: 1991, Page(s):3/1 - 3/6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (264 KB)

    As part of the SPECTRE research programme, National Transcommunications is studying the digital coding of broadcast resolution television. Much activity is focusing on target bit rates around 12 Mbits/sec for conventional resolution, and 20-30 Mbits/sec for HDTV. To achieve these levels of data compression, very sophisticated techniques need to be used to exploit temporal and spatial redundancy in... View full abstract»

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  • Packet interpolation in two-layer ATM video coding

    Publication Year: 1991, Page(s):4/1 - 4/5
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (276 KB)

    Transmission of moving images through asynchronous transfer mode (ATM) networks can suffer long delays which may lead to packet loss. The authors have used a method which employs H.261, the CCITT standard video codec, at the base layer and its residual quantization distortions at the second layer. It is assumed that the base layer has a constant bit rate output at a selectable rate up to 1920 kb/s... View full abstract»

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  • IEE Colloquium on `Adaptive Interpolation in Images' (Digest No.112)

    Publication Year: 1991
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (28 KB)

    The following topics were dealt with: block-structured interpolative coding; TV image compression; motion compensated frame prediction; ATM video coding; image pyramids interpolation; vector assisted spatial interpolation; motion-adaptive standards conversion; and HD-MAC algorithm for HDTV bandwidth compression View full abstract»

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