公开(公告)号：WO2014149576A1

公开(公告)日：2014-09-25

申请号：PCT/US2014/019722

申请日：2014-03-01

Applicant: GENERAL INSTRUMENT CORPORATION

Inventor： MCCARTHY, Sean T. ,  BORGWARDT, Peter A. ,  KAMARSHI, Vijay ,  SAXENA, Shiv

IPC: H04N19/154 ,  H04N19/126 ,  H04N19/176 ,  H04N19/14 ,  H04N19/46

CPC classification number: H04N19/124 ,  H04N19/126 ,  H04N19/14 ,  H04N19/154 ,  H04N19/162 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/593

Abstract: A video processing system is provided to create quantization data parameters based on human eye attraction to provide to an encoder to enable the encoder to compress data taking into account the human perceptual guidance. The system includes a perceptual video processor (PVP) to generate a perceptual significance pixel map for data to be input to the encoder. Companding is provided to reduce the pixel values to values ranging from zero to one, and decimation is performed to match the pixel values to a spatial resolution of quantization parameter values (QP) values in a look up table (LUT). The LUT table values then provide the metadata to provide to the encoder to enable compression of the original picture to be performed by the encoder in a manner so that bits are allocated to pixels in a macroblock according to the predictions of eye tracking.

Abstract translation: 提供视频处理系统以基于人眼吸引来产生量化数据参数，以提供给编码器，以使得编码器可以考虑人的感知指导来压缩数据。 该系统包括感知视频处理器（PVP），以产生要输入到编码器的数据的感知有意义的像素图。 提供压缩以将像素值减小到从零到一的值，并且执行抽取将像素值与查找表（LUT）中的量化参数值（QP）值的空间分辨率相匹配。 然后，LUT表格提供元数据以提供给编码器，以便能够按照编码器执行的原始图像的压缩，使得根据眼睛跟踪的预测将比特分配给宏块中的像素。

公开(公告)号：WO2013096259A2

公开(公告)日：2013-06-27

申请号：PCT/US2012/070258

申请日：2012-12-18

Applicant: GENERAL INSTRUMENT CORPORATION

Inventor： SCHWARTZ, Mayer D. ,  BORGWARDT, Peter A. ,  SAXENA, Shiv ,  VAN VELDHUISEN, Brenda L.

IPC: H04N7/26

CPC classification number: H04N19/124 ,  H04N19/103 ,  H04N19/107 ,  H04N19/114 ,  H04N19/115 ,  H04N19/117 ,  H04N19/142 ,  H04N19/146 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/179 ,  H04N19/184 ,  H04N19/186 ,  H04N19/194

Abstract: A method of dual-pass rate control video encoding and an encoder are disclosed. Uncompressed input video is received with a video encoder. First pass encoding is performed, and a second pass encoding is performed with the video encoder at a delay relative to the first pass. The first pass encoding detects scene changes within the input video, assigns macroblocks to a pre-determined number of activity classes, and determines a complexity of each picture within the sequence of pictures. Information from the first pass encoding concerning the scene changes, the activity classes, and the complexity are used for rate control determined in second pass encoding for producing and outputting a bit stream of compressed video. During at least one of the first pass and second pass encoding, boundaries of at least some of the GOPs are adjusted to be aligned with the scene changes.

Abstract translation: 公开了一种双通速率控制视频编码方法和编码器。 视频编码器接收未压缩的输入视频。 执行第一遍编码，并且与视频编码器相对于第一遍延迟执行第二遍编码。 第一遍编码检测输入视频内的场景变化，将宏块分配给预定数量的活动类别，并且确定图像序列内的每个图像的复杂度。 来自关于场景变化的第一遍编码的信息，活动类别和复杂度被用于在用于产生和输出压缩视频的比特流的第二遍编码中确定的速率控制。 在第一遍和第二遍编码中的至少一个编码期间，至少一些GOP的边界被调整为与场景变化对准。