Residual frame

About: Residual frame is a research topic. Over the lifetime, 4443 publications have been published within this topic receiving 68784 citations.

A reformative frame layer rate control algorithm for H.264

Abstract: Rate control is an important part of video coding. There are two disadvantages in frame layer rate control of JVT-G012 proposal for H.264 video coding standard. One is that the bit allocation in frame layer is uniform and another is that it does not take the encoded frame information into account. This paper presents a reformative frame layer rate control algorithm by combining frame complexity and adjusting quantization parameter (QP). The target bits of each frame are allocated based on its complexity coefficient and then its quantization parameter is adjusted by encoded frame information. Experimental results show that the proposed algorithm, in comparison to the original algorithm, reduced the actual bitrate error of video sequences by almost one times, improved average peak signal noise ratio (PSNR) by 0.64 dB and got a smaller PSNR deviation by 29.32%. The algorithm can not only control bitrate more accurately, but also get video image quality better and smoother with lower coding buffer occupancy.

Method and apparatus for cross color/cross luminance suppression

Abstract: According to embodiments of the present invention, a method for processing an image in a video data is disclosed. The video data comprises at least a first frame and a second frame. The first frame is composed of a first even field and a first odd field, while the second frame is composed of a second even field and a second odd field. The method comprises obtaining a first difference set between pixel information of the first frame and pixel information of the second frame, wherein the first frame and the second frame are adjacent to each other; examining a first criterion with the first difference set; and performing cross color suppressing operation on pixel information of the second frame according to a set of stationary image judgment information comprising the result of the first criterion examination.

Method and apparatus for adaptively scaling motion vector information in an information stream decoder

Abstract: A method and apparatus for reducing memory and memory bandwidth requirements in an MPEG-like decoder by compressing image information prior to storage such that a reduced resolution image information frame is stored and subsequently utilized by, e.g., a motion compensation module of the decoder. The invention responsively processes motion vector information in a manner consistent with the amount of compression imparted to a predicted image information frame, and the type of prediction employed in forming the predicted information frame.

Optimal bit allocations for lossless video coders: motion vectors vs. difference frames

Abstract: We present a simple frame-adaptative procedure for minimizing the total rate in classical block based, motion-compensated lossless video coders. Our method can be applied to compress digital video for applications where no distortion is tolerated in the original video data. In motion-compensated video coding, motion vectors are used to improve the prediction of the current frame to be coded and must themselves be encoded with bits. We find an expression for the total rate of the current frame as a function of the number of bits allocated to the motion vectors. Then, we analytically derive the optimal motion bit allocations that minimize the total rate. We implement the video coder and present results on real video sequences, and discuss the potential applications of this work to the more interesting case of lossy video coding.

Method for receiving and processing frames and a device having frame receiving and processing capabilities

Abstract: A device having frame receiving and processing capabilities and a method for receiving and processing frames. The method includes: receiving a frame; associating a frame timestamp with the frame; storing the frame and the associated timestamp at a certain buffer out of a group of buffers; generating a valid timing information frame indicator if the received frame is a valid timing information frame; and storing the valid timing information frame indicator at a certain buffer descriptor associated with the certain buffer.