Barannik V.V., Ryabuha U.N., Tverdokhlib V.V., Shulgin S.S., Barannik D.V. VIDEO SEGMENT CODING METHOD FOR BIT RATE CONTROL INFORMATION TECHNOLOGY

Abstract

The conceptual bases of construction of an effective coding method as a part of the module of control of bit speed of video traffic in system of video data processing at source level are considered. This method reduces the number of bits on the description of video frames by reducing a number of redundancies - namely - structural and combinatorial, which in most cases when processed by traditional methods remain unchanged. This is achieved by identifying the lengths of a series of binary elements in the binary description of the DCT transformant. In this case, the peculiarities of the localization of binary series are taken into account, namely, that the maximum number of zero elements of the binary description can be detected within the high-frequency zone of the transformant, and within the lower bits of the components. The essence of using the proposed encoding method in controlling the bit rate of the video stream is revealed, namely, the principles of constructing a code representation of a frame fragment and approaches to determining the structural units of an individual video frame within which control is performed. The method focuses on the processing of the bit representation of the discrete-cosine transform transformant, and at this stage of the transformant processing is considered as a structural component of the video stream frame, at the level of which the encoding is performed. At the same time, to ensure the flexibility of controlling the bit rate of video traffic, for each of the transformants of the discrete-cosine transformation is decomposed to the level of the plurality of bit planes. In addition, this principle of forming a code representation of a fragment of the video stream allows you to control the level of error that may be introduced in the process of bit rate control. Because the proposed approach provides for bit rate control by manipulating the number of bit planes that make up the description of the transformant, the error rate can be controlled by excluding only those bit planes that least contribute to reducing data integrity..