System and method for object-oriented video processing
    1.
    发明授权
    System and method for object-oriented video processing 有权
    面向对象视频处理的系统和方法

    公开(公告)号:US06882686B2

    公开(公告)日:2005-04-19

    申请号:US09875480

    申请日:2001-06-06

    摘要: The object-oriented coder discriminates resource allocation between objects and non-objects for video messaging applications over wireless networks. The object-oriented coder executes a rate control algorithm, an unequal error protection algorithm, and an error concealment algorithm. In the rate control algorithm, an iterative feedback rate control scheme is used in which quantization values of object and non-object data are held constant. In the unequal error protection algorithm, the bit stream is partitioned by object macroblocks and non-object macroblocks. In the error concealment algorithm, five bits of QUANT values of each GOB are used for representing location and motion vectors of the object in the next frame, since the quantization value is constant. The five bits are not used for quantization value. The five bits are used for error concealment to avoid bit rate overhead. The object-oriented coder increases encoding delay, but this increase is acceptable in messaging.

    摘要翻译: 面向对象的编码器通过无线网络区分视频消息应用的对象和非对象之间的资源分配。 面向对象编码器执行速率控制算法,不等错误保护算法和错误隐藏算法。 在速率控制算法中,使用迭代反馈速率控制方案,其中对象和非对象数据的量化值保持不变。 在不等错误保护算法中,比特流由对象宏块和非对象宏块分割。 在误差隐藏算法中,由于量化值不变,所以每个GOB的QUANT值的5位用于表示下一帧中的对象的位置和运动矢量。 这五位不用于量化值。 这五个位用于错误隐藏以避免比特率开销。 面向对象的编码器增加编码延迟,但这种增加在消息传递中是可以接受的。