By Wen Gao, Siwei Ma
This e-book offers an summary of the cutting-edge in video coding know-how. in particular, it introduces the instruments of the AVS2 general, describing how AVS2 can assist to accomplish an important development in coding potency for destiny video networks and functions by way of incorporating smarter coding instruments comparable to scene video coding. positive factors: introduces the fundamental options in video coding, and provides a quick historical past of video coding know-how and criteria; reports the coding framework, major coding instruments, and syntax constitution of AVS2; describes the most important applied sciences utilized in the AVS2 ordinary, together with prediction coding, remodel coding, entropy coding, and loop-filters; examines effective instruments for scene video coding and surveillance video, and the main points of a promising clever video coding method; discusses optimization applied sciences in video coding structures; offers a assessment of photograph, video, and 3D content material caliber evaluate algorithms; surveys the new examine themes in video compression.
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Additional resources for Advanced Video Coding Systems
The initial sequence header can be allowed to appear repeatedly in the bitstream—which is called repeated sequence header, and makes random access into the potential sequence. In the sequence, each coded picture starts with a picture header, and is ordered accordingly in the bitstream. The order of these pictures in the bitstream is the same 46 3 An Overview of AVS2 Standard as one in decoding, but it can be different from display order, which is related with the picture coding type. In AVS2, four types of pictures are defined: • Intra picture (I-picture): only intra prediction is used in the picture.
Y is the existing luminance signal for black-and-white TV broadcasting, and UV signal are added for color information. YIQ is similar to YUV, and the Y component is same in the two color spaces. I and Q represent the chrominance information and can be thought of as a new coordinate system rotated from UV coordinate with 33◦ . YCbCr is also similar to YUV and YIQ, but it is usually used for digital video. More details about digital video can be found in Sect. 2. The above color spaces can be converted from and to each other.
Many color spaces have been developed based on the color matching experiments, such as the well-known RGB color space, which will be detailed in Sect. 2. 1 Color Spaces 19 Fig. 2 Color sensitivity. 0 (http://creativecommons. 2 RGB, XYZ, and YUV Color Spaces RGB color space is based on an additive RGB color model, which describes how to mix red, green, and blue three colors to produce a given color (Fig. 3). As the RGB color model is simple for implementation, it has been widely used for sensing, representation, and display of images in electronic systems, such as televisions and computers.