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    • 7. 发明授权
    • Temporal classified filtering for video compression
    • 视频压缩的时域分类过滤
    • US08503530B2
    • 2013-08-06
    • US10856093
    • 2004-05-27
    • Zhourong MiaoJames J. Carrig, Jr.Marco Paniconi
    • Zhourong MiaoJames J. Carrig, Jr.Marco Paniconi
    • G06K9/40
    • H04N19/573H04N19/105H04N19/117H04N19/139H04N19/17H04N19/46H04N19/51H04N19/61H04N19/80
    • Temporal classified filtering encodes image data by applying filters assigned to classes of pixels in a target frame to predict values for the pixels. The pixels are classified based on their associated motion vectors and the motion vectors are used to position the filters on the reference frame. Prediction error values are also calculated. The filters, motion vectors, and prediction errors represent the pixels in the encoded image data. The reference frame may be a past or future frame of the image data, and multiple reference frames of various combinations of past and future frames may be used. The filters for multiple reference frames are three-dimensional comprising a two-dimensional filter for each reference frame. The filters may be pre-determined or generated as the frames are encoded. The image data is recreated by applying the filters to the reference frames and correcting the resulting predictions with the prediction error values.
    • 时间分类过滤通过应用分配给目标帧中的像素类的滤波来对图像数据进行编码,以预测像素的值。 基于它们相关联的运动矢量对像素进行分类,运动矢量用于将滤波器定位在参考帧上。 还计算预测误差值。 滤波器,运动矢量和预测误差表示编码图像数据中的像素。 参考帧可以是图像数据的过去或将来的帧,并且可以使用过去和未来帧的各种组合的多个参考帧。 用于多个参考帧的滤波器是三维的,其包括用于每个参考帧的二维滤波器。 当帧被编码时,滤波器可以被预先确定或生成。 通过将滤波器应用于参考帧并用预测误差值校正所得到的预测来重新创建图像数据。