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    Method and apparatus for encoding and decoding an image based on plurality of reference pictures
    6.
    发明授权
    Method and apparatus for encoding and decoding an image based on plurality of reference pictures 有权
    基于多个参考图像对图像进行编码和解码的方法和装置

    公开(公告)号：US08731055B2

    公开(公告)日：2014-05-20

    申请号：US12395977

    申请日：2009-03-02

    申请人： Sang-rae Lee ,  Woo-jin Han ,  Jung-hye Min

    发明人： Sang-rae Lee ,  Woo-jin Han ,  Jung-hye Min

    IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N7/26

    CPC分类号： H04N7/26037 ,  H04N19/105 ,  H04N19/109 ,  H04N19/172 ,  H04N19/176 ,  H04N19/46 ,  H04N19/527 ,  H04N19/573 ,  H04N19/61

    摘要： A method and apparatus for encoding and decoding an image using a plurality of reference pictures. In an exemplary embodiment, the method of encoding an image comprises: generating information about transforms between a first picture and a second picture; generating a reference picture by transforming the second picture based on the generated information about transforms; predicting a current block of a current picture based on at least one of the reference picture and the first picture; and encoding the current block based on the predicting. Therefore, prediction encoding based on more accurate prediction is possible, thereby increasing a compression ratio of image encoding.

    摘要翻译： 一种使用多个参考图像对图像进行编码和解码的方法和装置。 在示例性实施例中，编码图像的方法包括：产生关于第一图像和第二图像之间的变换的信息; 通过基于生成的关于变换的信息来变换第二画面来生成参考画面; 基于所述参考图像和所述第一图像中的至少一个来预测当前图像的当前块; 并根据预测编码当前块。 因此，可以进行基于更精确的预测的预测编码，从而增加图像编码的压缩率。

    METHOD AND APPARATUS FOR ENCODING AND DECODING AN IMAGE USING A REFERENCE PICTURE
    10.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING AN IMAGE USING A REFERENCE PICTURE 失效
    使用参考图像编码和解码图像的方法和装置

    公开(公告)号：US20090285300A1

    公开(公告)日：2009-11-19

    申请号：US12395731

    申请日：2009-03-02

    申请人： Woo-jin Han ,  Sang-rae Lee ,  Tammy Lee ,  Jung-hye Min

    发明人： Woo-jin Han ,  Sang-rae Lee ,  Tammy Lee ,  Jung-hye Min

    IPC分类号： H04N7/32 ,  H04N7/26

    CPC分类号： H04N19/00587 ,  H04N19/105 ,  H04N19/124 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/43 ,  H04N19/46 ,  H04N19/58 ,  H04N19/61

    摘要： A method and apparatus for encoding and decoding an image by performing motion prediction and compensation on pictures in a group of pictures by selectively using a high-quality key picture that is previously encoded and restored, and a second picture that is previously encoded and restored. The method of encoding an image improves the prediction efficiency of an image by storing a key picture, which is encoded and restored to a high quality by reducing a loss caused by a quantization error using a small quantization coefficient, in a first storage unit and storing a previously encoded and restored second picture in a second storage unit, and then performing motion prediction and compensation by selectively using the key picture stored in the first storage unit and the second picture stored in the second storage unit while encoding a next picture in a group of pictures.

    摘要翻译： 通过选择性地使用先前被编码和恢复的高质量关键图像，以及先前编码和恢复的第二图像，对图像组中的图像执行运动预测和补偿来对图像进行编码和解码的方法和装置。 编码图像的方法通过在第一存储单元中存储通过减少由量化误差引起的量化误差造成的损失而被编码并恢复为高质量的关键图像来提高图像的预测效率，并存储 在第二存储单元中先前编码并恢复的第二图像，然后通过选择性地使用存储在第一存储单元中的密钥图像和存储在第二存储单元中的第二图像来对组中的下一图像进行编码来执行运动预测和补偿 的图片。