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发明公开
CN105049868A 对视频进行解码的方法和设备 有权

对视频进行解码的方法和设备
摘要：
提供了一种对视频进行解码的方法和设备。还提供了一种更新在对变换系数等级的熵编码和熵解码中使用的参数的方法。通过使用参数对指示变换系数等级的语法元素进行二值化。基于将先前变换系数的大小与基于先前参数而获得的预定临界值进行比较的结果，更新或保持所述参数，其中，先前参数在对先前变换系数等级语法元素的反二值化中被使用。预定临界值被设置为具有与先前参数成比例的值，当先前参数被更新时，更新后的参数与先前参数相比具有逐渐增加的值。
摘要（英）：

The present invention provides a method and an apparatus for decoding videos, and also provides a method of updating a parameter used in entropy encoding and decoding of a transformation coefficient level. A syntax element indicating a transformation coefficient level is binarized by using a parameter. The parameter is renewed or maintained based on a result of comparing a size of a previous transformation coefficient with a predetermined critical value obtained based on a previous parameter used in de-binarization of a previous transformation coefficient level syntax element. The predetermined critical value is set to have a value proportional to the previous parameter, and when the previous parameter is renewed, the renewed parameter has a value that gradually increases compared to the previous parameter.

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