Header-based processing of image compressed using multi-scale transforms
    1.
    发明申请
    Header-based processing of image compressed using multi-scale transforms 有权
    基于标题的处理使用多尺度变换压缩的图像

    公开(公告)号:US20080095452A1

    公开(公告)日:2008-04-24

    申请号:US11787993

    申请日:2007-04-17

    IPC分类号: G06K9/34

    摘要: A method and apparatus is described for segmenting an image, for adaptively scaling an image, and for automatically scaling and cropping an image based on codestream headers data. In one embodiment, a file that can provide a header that contains multi-scale entropy distribution information on blocks of an image is received. For each block, the block is assigned to a scale from a set of scales that maximizes a cost function. The cost function is a product of a total likelihood and a prior. The total likelihood is a product of likelihoods of the blocks. The image is segmented by grouping together blocks that have been assigned equivalent scales. In one embodiment, the file represents an image in JPEG 2000 format.

    摘要翻译: 描述了用于分割图像,自适应地缩放图像以及基于码流头部数据自动缩放和裁剪图像的方法和装置。 在一个实施例中,可以接收可以提供包含图像块上的多尺度熵分布信息的报头的文件。 对于每个块,块被分配给从一组成本函数最大化的一组比例尺。 成本函数是一个总可能性和先前的乘积。 总可能性是块的可能性的乘积。 通过将已经分配了等效尺度的块分组在一起来分割图像。 在一个实施例中,文件表示JPEG 2000格式的图像。

    Header-based processing of images compressed using multi-scale transforms
    2.
    发明申请
    Header-based processing of images compressed using multi-scale transforms 有权
    基于标题的处理使用多尺度变换压缩的图像

    公开(公告)号:US20080044091A1

    公开(公告)日:2008-02-21

    申请号:US11787836

    申请日:2007-04-17

    IPC分类号: G06K9/36

    摘要: A method and apparatus is described for segmenting an image, for adaptively scaling an image, and for automatically scaling and cropping an image based on codestream headers data. In one embodiment, a file that can provide a header that contains multi-scale entropy distribution information on blocks of an image is received. For each block, the block is assigned to a scale from a set of scales that maximizes a cost function. The cost function is a product of a total likelihood and a prior. The total likelihood is a product of likelihoods of the blocks. The image is segmented by grouping together blocks that have been assigned equivalent scales. In one embodiment, the file represents an image in JPEG 2000 format.

    摘要翻译: 描述了用于分割图像,自适应地缩放图像以及基于码流头部数据自动缩放和裁剪图像的方法和装置。 在一个实施例中,可以接收可以提供包含图像块上的多尺度熵分布信息的报头的文件。 对于每个块,块被分配给从一组成本函数最大化的一组比例尺。 成本函数是一个总可能性和先前的乘积。 总可能性是块的可能性的乘积。 通过将已经分配了等效尺度的块分组在一起来分割图像。 在一个实施例中,文件表示JPEG 2000格式的图像。

    Header-based processing of images compressed using multi-scale transforms
    8.
    发明授权
    Header-based processing of images compressed using multi-scale transforms 有权
    基于标题的处理使用多尺度变换压缩的图像

    公开(公告)号:US08184918B2

    公开(公告)日:2012-05-22

    申请号:US11787835

    申请日:2007-04-17

    IPC分类号: G06K9/20 G06K9/36 G06K9/46

    摘要: A method and apparatus is described for segmenting an image, for adaptively scaling an image, and for automatically scaling and cropping an image based on codestream headers data. In one embodiment, a file that can provide a header that contains multi-scale entropy distribution information on blocks of an image is received. For each block, the block is assigned to a scale from a set of scales that maximizes a cost function. The cost function is a product of a total likelihood and a prior. The total likelihood is a product of likelihoods of the blocks. The image is segmented by grouping together blocks that have been assigned equivalent scales. In one embodiment, the file represents an image in JPEG 2000 format.

    摘要翻译: 描述了用于分割图像,自适应地缩放图像以及基于码流头部数据自动缩放和裁剪图像的方法和装置。 在一个实施例中,可以接收可以提供包含图像块上的多尺度熵分布信息的报头的文件。 对于每个块,块被分配给从一组成本函数最大化的一组比例尺。 成本函数是一个总可能性和先前的乘积。 总可能性是块的可能性的乘积。 通过将已经分配了等效尺度的块分组在一起来分割图像。 在一个实施例中,文件表示JPEG 2000格式的图像。