TRANSFORMANTS BIT REPRESENTATION ENCODING WITHIN VIDEO BIT RATE CONTROL

V. Barannik, Yuriy Ryabukha, Pavlo Gurzhiy, Vitaliy Tverdokhlib, Igor Shevchenko
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Abstract

The conceptual basements of constructing an effective encoding method within the bit rate control module of video traffic in the video data processing system at the source level are considered. The essence of using the proposed method in the course of the video stream bit rate controlling disclosed, namely, the principles of constructing the fragment of the frame code representation and approaches for determining the structural units of the individual video frame within which the control is performed. The method focuses on processing the bit representation of the DCT transformants, and at his processing stage transformant was considered as a structural component of the video stream frame at which the encoding is performed. At the same time, to ensure the video traffic bit rate controlling flexibility, decomposition is performed with respect to each of the transformants to the level of the plurality of bit planes. It is argued that the proposed approach is potentially capable to reducing the video stream bit rate in the worst conditions, that is, when component coding is performed. In addition, this principle of video stream fragmen code representation forming allows to control the level of error that can be made in the bit rate control process. However, in conditions where the bit representation of the transformant is encoded, the method is able to provide higher compression rates as a result of the fact that the values of the detection probability of binary series lengths and the values of detected lengths within the bit plane will be greater than in the case of component coding. This is explained by the structural features of the distribution of binary elements within each of the bit planes, which together form the transformer DCT. In particular, high-frequency transformer regions are most often formed by chains of zero elements. The solutions proposed in the development of the encoding method are able to provide sufficient flexibility to control the bit rate of the video stream, as well as the ability to quickly change the bit rate in a wide range of values
在视频比特率控制中变换比特表示编码
讨论了在源级视频数据处理系统中视频流量码率控制模块中构造有效编码方法的概念基础。公开了在视频流比特率控制过程中使用所提出方法的本质,即构造帧代码表示的片段的原理和确定在其中执行控制的单个视频帧的结构单元的方法。该方法侧重于处理DCT变换的位表示,在其处理阶段,变换被视为视频流帧的结构组成部分,在该视频流帧上执行编码。同时,为了保证视频流量比特率控制的灵活性,对每个变换进行分解到多个比特平面的水平。本文认为,所提出的方法有可能在最坏的条件下降低视频流比特率,即在执行组件编码时。此外,视频流片段码表示形成的这个原理允许在比特率控制过程中控制可能产生的错误级别。但是,在对变换的位表示进行编码的情况下,由于二进制序列长度的检测概率值和位平面内检测到的长度值将大于分量编码的情况,因此该方法能够提供更高的压缩率。这可以通过二进制元素在每个位平面内分布的结构特征来解释,它们共同形成变压器DCT。特别是,高频变压器区域通常由零元链构成。在编码方法的开发中提出的解决方案能够提供足够的灵活性来控制视频流的比特率,以及在大范围内快速改变比特率的能力
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