公开(公告)号：US20110206122A1

公开(公告)日：2011-08-25

申请号：US12712717

申请日：2010-02-25

申请人： Ligang Lu ,  Peter Westerink

发明人： Ligang Lu ,  Peter Westerink

IPC分类号： H04N7/32

CPC分类号： H04N19/137 ,  H04N19/107 ,  H04N19/14 ,  H04N19/172

摘要： Methods and apparatus are provided for encoding video, such as surveillance video. A video frame is encoded by evaluating a level of activity in video frame relative to one or more neighboring frames; encoding the video frame using an inter-coding technique if the evaluation satisfies one or more predefined inter-coding criteria, wherein said inter-coding technique is applied to said video frame without a Group of Picture structure having a maximum number of consecutive inter-coded frames; and encoding the video frame using an intra-coding technique if the evaluation satisfies one or more predefined intra-coding criteria. The evaluating step may comprise, for example, determining whether differences between the video frame and the one or more neighboring frames exceed a predefined threshold.

摘要翻译： 提供了编码视频的方法和装置，如监视视频。 通过评估视频帧中相对于一个或多个相邻帧的活动水平来编码视频帧; 如果评估满足一个或多个预定义的帧间编码标准，则使用帧间编码技术对视频帧进行编码，其中所述帧间编码技术被应用于所述视频帧，而不具有最大数量的连续帧间编码的图像组 框架 以及如果所述评估满足一个或多个预定义的内部编码标准，则使用帧内编码技术来编码所述视频帧。 评估步骤可以包括例如确定视频帧与一个或多个相邻帧之间的差异是否超过预定阈值。

公开(公告)号：US20070160127A1

公开(公告)日：2007-07-12

申请号：US11328892

申请日：2006-01-10

申请人： Krishna Ratakonda ,  Deepak Turaga ,  Peter Westerink

发明人： Krishna Ratakonda ,  Deepak Turaga ,  Peter Westerink

IPC分类号： H04B1/66 ,  H04J3/22

CPC分类号： H04N21/23439 ,  H04N19/159 ,  H04N19/164 ,  H04N19/172 ,  H04N19/587 ,  H04N19/61 ,  H04N21/2662

摘要： An apparatus and corresponding method are provided for selecting one of several alternate input streams for transmission, the method including determining bandwidth requirements for each of the alternate input streams, measuring bandwidth currently available for transmission, and selecting for transmission one of the alternate input streams that has the highest determined bandwidth requirement less than or equal to the measured bandwidth currently available for transmission.

摘要翻译： 提供了一种装置和相应方法，用于选择若干替代输入流中的一个以进行传输，所述方法包括确定每个替代输入流的带宽需求，测量当前可用于传输的带宽，以及选择传输替代输入流之一， 具有小于或等于当前可用于传输的测量带宽的最高确定带宽要求。

公开(公告)号：US5586200A

公开(公告)日：1996-12-17

申请号：US178948

申请日：1994-01-07

申请人： Patrick Devaney ,  Daniel Gnanaprakasam ,  Peter Westerink ,  Robert Topper

发明人： Patrick Devaney ,  Daniel Gnanaprakasam ,  Peter Westerink ,  Robert Topper

IPC分类号： H04N5/92 ,  G06T5/00 ,  G06T9/20 ,  H03M7/30 ,  H04N5/937 ,  H04N7/26 ,  H04N9/804 ,  H04N9/808 ,  G06K9/36

CPC分类号： G06T7/0085 ,  G06T9/20

摘要： An image processing system encodes a natural image into a segmented or mosaic image having well-defined edges and a residual image. The segmented image is encoded using a lossless encoding technique while the residual image is encoded using a lossy technique. This encoded image may be recorded on a video tape such that the segmented image may be recovered in picture-in-shuttle modes such as fast forward and fast rewind. In addition, the recorded image may be decoded and reencoded through several generational levels without experiencing significant degradation in perceived image quality. The segmented image is produced by an encoder which employs a multi-scale edge finder that is able to resolve transitions occurring over two, four and eight pixels into an edge located between two pixels. In addition, the lossless encoder includes circuitry which chain-encodes the segmented image into a low-resolution image and multiple complementary images such that the low-resolution image may be stored as a single data packet and, thus, recovered as a unit from the tape in picture-in-shuttle mode.

摘要翻译： 图像处理系统将自然图像编码为具有明确定义的边缘和残留图像的分割或马赛克图像。 使用无损编码技术对分割图像进行编码，同时使用有损技术对残差图像进行编码。 该编码图像可以被记录在录像带上，使得分割的图像可以以诸如快进和快退的快照模式恢复。 此外，所记录的图像可以通过几代代等级被解码和重新编码，而不会感觉到感知图像质量的显着劣化。 分割图像由编码器产生，该编码器采用多尺度边缘检测器，其能够将在两个，四个和八个像素上发生的转换分解成位于两个像素之间的边缘。 此外，无损编码器包括将分割图像链接编码为低分辨率图像和多个互补图像的电路，使得低分辨率图像可以作为单个数据分组存储，并因此作为单元从 磁带在图像在穿梭模式。

公开(公告)号：US5493334A

公开(公告)日：1996-02-20

申请号：US420325

申请日：1995-04-11

申请人： Anthony E. Zortea ,  Peter Westerink

发明人： Anthony E. Zortea ,  Peter Westerink

IPC分类号： H04N5/16 ,  H04N5/361 ,  H04N5/365 ,  H04N9/64 ,  H04N5/217

CPC分类号： H04N5/3655 ,  H04N5/361

摘要： A video camera generates an approximation of the dark current or black shading distortion signals based on scan position in the image, and subtracts the approximation signal from the signal generated by the camera during normal image-sensing operation to reduce the black shading distortion. In a particular embodiment of the invention, counters generate location signals representative of the location of pixel currently being read, and the location signals are processed by functions such as squaring or raising to a constant power, and by weighting, to produce components of the approximation of the dark signal. The components are subtracted from the imager signal, to reduce the dark shading. In one embodiment of the invention, the functions are automatically selected from among a plurality of preselected functions, and implemented by look-up tables.

摘要翻译： 摄像机基于图像中的扫描位置产生暗电流或黑色阴影失真信号的近似值，并且在正常图像感测操作期间从由相机产生的信号中减去近似信号以减少黑色阴影失真。 在本发明的特定实施例中，计数器产生表示当前正在读取的像素的位置的位置信号，并且通过诸如平方或上升到恒定功率的功能来处理位置信号，并且通过加权来产生近似的分量 的暗信号。 从成像器信号中减去分量，以减少黑暗的阴影。 在本发明的一个实施例中，这些功能是从多个预选功能中自动选择的，并且由查找表来实现。