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    MULTIRESOLUTION COMPRESSED IMAGE MANAGEMENT SYSTEM AND METHOD
    37.
    发明授权
    MULTIRESOLUTION COMPRESSED IMAGE MANAGEMENT SYSTEM AND METHOD 有权
    多分辨率压缩图像管理系统和方法

    公开(公告)号：EP1072015B1

    公开(公告)日：2018-03-07

    申请号：EP99918517.6

    申请日：1999-04-13

    申请人： ZORAN CORPORATION

    发明人： CHUI, Charles, K. ,  ZHONG, Lefan

    IPC分类号： G06T9/00 ,  H04N19/63

    CPC分类号： G06T3/4084 ,  H04N19/102 ,  H04N19/162 ,  H04N19/17 ,  H04N19/63 ,  H04N21/44 ,  H04N21/440263 ,  H04N21/4728

    摘要： In a multiresolution image processing system images are stored in files that contain thumbnail data as well as a full image data structure. The image data is preferably wavelet or wavelet-like transform coefficients, generated by applying a wavelet or wavelet-like transform to an image multiple times. Data representing mid-level resolution images are generated on the fly by extracting from the full image data structure only the data needed for the user or application selected resolution level. If the user has selected a subset of the image for viewing at a higher resolution level, a corresponding mid-level resolution image is constructed by extracting from the full image data structure the data needed for the user specified image portion at the user or application selected resolution level. The full image data structure is preferably encoded and stored in a manner allowing the image data for mid-level resolution images to be efficiently extracted without having to compute or recompute any image coefficients. By storing only thumbnail data and the full image data in an image file, and producing image data structures for other resolution levels on the fly, the storage requirements for image files are reduced. Since the image data structures for other resolution levels can be generated with minimal computational resources in a small fraction of a second, in most implementations the user will not be adversely affected by the non-inclusion of the other resolution levels in the image file.

    SIMD LAPPED TRANSFORM-BASED DIGITAL MEDIA ENCODING/DECODING
    39.
    发明公开
    SIMD LAPPED TRANSFORM-BASED DIGITAL MEDIA ENCODING/DECODING 审中-公开
    DIGITALE MEDIENCODIERUNG / -DECODIERUNG AUF DER BASIS VON SIMD-ÜBERLAPPUNGSTRANSformation

    公开(公告)号：EP1913521A4

    公开(公告)日：2017-07-05

    申请号：EP06789461

    申请日：2006-08-03

    申请人： MICROSOFT TECHNOLOGY LICENSING LLC

    发明人： SRINIVASAN SRIDHAR ,  TU CHENGJIE ,  SHAW PARKER

    IPC分类号： G06F17/14 ,  G06K9/36 ,  H04N19/436 ,  H04N19/63

    CPC分类号： H04N19/436 ,  G06F17/147 ,  H04N19/42 ,  H04N19/63

    摘要： A block transform-based digital media codec achieves faster performance by re-mapping components of the digital media data into vectors or parallel units on which many operations of the transforms can be performed on a parallel or single-instruction, multiple data (SIMD) basis. In the case of a one-dimensional lapped biorthogonal transform, the digital media data components are re-mapped into vectors on which butterfly stages of both overlap pre-/post-filter and block transform portions of the lapped transform can be performed on a SIMD basis. In the case of a two-dimensional lapped biorthogonal transform, the digital media data components are re-mapped into vectors on which a Hadamard operator of both overlap pre-/post-filter and block transform can be performed on a SIMD basis.

    摘要翻译： 基于块变换的数字媒体编解码器通过将数字媒体数据的分量重新映射成向量或并行单元来实现更快的性能，在向量或并行单元上可以基于并行或单指令多数据（SIMD）基础执行变换的许多操作 。 在一维重叠双正交变换的情况下，数字媒体数据分量被重新映射到向量上，重叠的变换的预/后置滤波和块变换部分的蝶形级可以在SIMD上执行 基础。 在二维重叠双正交变换的情况下，数字媒体数据分量被重新映射到两个向量，在这些向量上，可以在SIMD基础上执行重叠前置/后置滤波器和块变换的Hadamard算子。