专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5617482A Method of motion compensation and elastic deformation in picture sequences 失效
标题翻译：图像序列中的运动补偿和弹性变形方法
公开(公告)号：US5617482A
公开(公告)日：1997-04-01
申请号：US367773
申请日：1995-01-03
申请人： Harald Brusewitz
发明人： Harald Brusewitz
IPC分类号： G06T7/20 , H04N5/14 , H04N7/26 , G06K9/32 , G06K9/00
CPC分类号： H04N19/54 , G06T7/2033 , H04N5/145
摘要： A method of motion compensation and elastic deformation in picture sequences in transmission of moving pictures between a transmitter and a receiver, that is a picture coding method in which the pixel values of the picture are determined using a previous picture. In the transmitter, each picture in the picture sequence is divided into triangles by suitably choosing corner points, and the motion between two successive pictures is estimated such that the motion vectors of all the corner points can be established. Information about the corner points and/or the motion vectors is transmitted from the transmitter to the receiver, in which the motion vectors of the internal points of the triangles are calculated using the three transmitted motion vectors belonging to the respective triangle. The pixel values in the corner points of the triangles and in the internal points of the triangles are calculated using the transmitted and the calculated motion vectors, respectively. Preferrably, the motion vectors of the internal points of the triangles are calculated by interpolation.
摘要翻译：一种在发送器和接收器之间的运动图像传输中的图像序列中的运动补偿和弹性变形的方法，即使用先前图像确定图像的像素值的图像编码方法。在发射机中，通过适当地选择角点将图片序列中的每个图像分成三角形，并且估计两个连续图像之间的运动，使得可以建立所有角点的运动矢量。关于角点和/或运动矢量的信息从发射机发送到接收机，其中使用属于相应三角形的三个发送的运动矢量来计算三角形的内部点的运动矢量。分别使用传输的和计算的运动矢量来计算三角形和三角形的内部点的角点中的像素值。优选地，通过内插来计算三角形的内部点的运动矢量。

2. 发明授权

US6038257A Motion and still video picture transmission and display 失效
标题翻译：运动和静态图像传输和显示
公开(公告)号：US6038257A
公开(公告)日：2000-03-14
申请号：US815805
申请日：1997-03-12
申请人： Harald Brusewitz , Bo Burman , Goran Roth
发明人： Harald Brusewitz , Bo Burman , Goran Roth
IPC分类号： H04N5/232 , H04N7/14 , H04N7/18 , H04N7/24
CPC分类号： H04N5/23293 , H04N7/147 , H04N7/18
摘要： An imaging system and method for alleviating perceptional problems of a viewer during the transmission and display of high resolution still images on a video system is disclosed. Through modifications to an encoder and decoder within the imaging system, the viewer may select a still image or portion thereof from a video image sequence for viewing. The imaging system and method ameliorate perceptional delays in displaying the lengthy high resolution still image by immediately displaying a lower-resolution, shorter-length video image frame corresponding to the still image. The lower resolution video image being displayed is then updated and refined with the image data from the high resolution still image as it is received.
摘要翻译：公开了一种用于在视频系统上传输和显示高分辨率静止图像期间减轻观看者的感知问题的成像系统和方法。通过对成像系统内的编码器和解码器的修改，观看者可以从视频图像序列中选择静止图像或其部分以进行观看。成像系统和方法通过立即显示与静止图像相对应的较低分辨率的较短长度的视频图像帧来改善显示长时间的高分辨率静止图像的感知延迟。然后，当接收到来自高分辨率静止图像的图像数据时，正在显示的低分辨率视频图像被更新和细化。

3. 发明授权

US4837617A Method and means for coding and decoding picture information 失效
标题翻译：图像信息编码和解码的方法和装置
公开(公告)号：US4837617A
公开(公告)日：1989-06-06
申请号：US156620
申请日：1988-02-17
申请人： Harald Brusewitz
发明人： Harald Brusewitz
IPC分类号： G06T9/00 , H04N7/50
CPC分类号： H04N19/619
摘要： A method and apparatus for coding and decoding picture information is described. According to prior art two modes, are utilized for transmitting picture information, respectively. According to the present invention advantages are obtained in using a mixed mode, i.e. certain frequency components are transmitted with prediction and the remaining components without. In the invention two channels, with and without prediction, are utilized respectively. These channels are selectively connected by means of switches, which are controlled by a control means.

4. 发明授权

US06898245B2 Low complexity video decoding 失效
标题翻译：低复杂度视频解码
公开(公告)号：US06898245B2
公开(公告)日：2005-05-24
申请号：US09818043
申请日：2001-03-26
申请人： Harald Brusewitz
发明人： Harald Brusewitz
IPC分类号： H04N7/30 , H04N7/26 , H04N7/32 , H04N7/36 , H04N7/46 , H04N7/50 , H04N7/12
CPC分类号： H04N19/59 , H04N19/126 , H04N19/523 , H04N19/61
摘要： Method and apparatus for decoding a compressed video signal having a first resolution for use by a display unit having a second resolution. The method and apparatus involve downscaling the compressed video bit stream before the bit stream is decoded, which results in a considerable decrease in decoding complexity requiring less memory and lower CPU power usage.
摘要翻译：用于对具有第一分辨率的压缩视频信号进行解码以便由具有第二分辨率的显示单元使用的方法和装置。该方法和装置包括在解码比特流之前对压缩的视频比特流进行缩小，这导致解码复杂度大大降低，需要较少的存储器和较低的CPU功率使用。

5. 发明授权

US5966181A Video coding system with buffer control quantization step size 失效
标题翻译：具有缓冲控制量化步长的视频编码系统
公开(公告)号：US5966181A
公开(公告)日：1999-10-12
申请号：US249081
申请日：1994-05-25
申请人： Harald Brusewitz
发明人： Harald Brusewitz
IPC分类号： G06T9/00 , H04N7/30 , H04N7/32 , H04N7/46 , H04N7/50 , H04N7/24
CPC分类号： H04N19/587 , H04N19/126 , H04N19/132 , H04N19/152 , H04N19/176 , H04N19/60 , H04N19/61 , H04N19/146 , H04N19/50
摘要： A method and device for image coding, primarily intended to be applied in the transmission of video signals, convert a video signal to a bit stream by coding and quantising. The bit stream is stored in a buffer store before it is sent at a constant bit rate on a transmission line. The content in the buffer store is regulated by varying the step height in the quantiser. With the frame rate at the input being known and the frame rate and bit rate at the output being known, the ideal buffer store content can be determined. The actual buffer store content is sensed and compared with the ideal buffer store content and the difference between these two values is determined. The step height in the quantiser is adjusted as a function of the difference.
摘要翻译：主要用于视频信号传输的用于图像编码的方法和装置通过编码和量化将视频信号转换成比特流。在传输线上以恒定比特率发送比特流之前，将比特流存储在缓冲存储器中。通过改变量化器中的步长来调节缓冲存储器中的内容。在输入端的帧速率是已知的并且输出端的帧速率和比特率是已知的时，可以确定理想的缓冲存储器内容。感测实际的缓冲存储器内容并与理想的缓冲存储器内容进行比较，并且确定这两个值之间的差异。量化器中的台阶高度作为差值的函数进行调整。

6. 发明授权

US5452103A Method and a device for image coding 失效
标题翻译：方法和图像编码装置
公开(公告)号：US5452103A
公开(公告)日：1995-09-19
申请号：US964032
申请日：1992-10-21
申请人： Harald Brusewitz
发明人： Harald Brusewitz
IPC分类号： G06T9/00 , H04N7/14 , H04N7/30 , H04N7/46 , H04N7/50 , H04N1/41
CPC分类号： H04N19/587 , H04N19/124 , H04N19/132 , H04N19/152 , H04N19/172 , H04N19/18 , H04N19/60 , H04N19/61 , H04N19/146
摘要： The invention relates to a method and a device for image coding having a particular, but not necessarily an exclusive, application in the transmission of video signals. The video signal is converted to a bit stream by coding and quantising and stored in a buffer store before it is transmitted on a transmission line at a constant bit rate. Problems experienced with the known technology have been the prevention of overflow in the buffer store and the buffer store being emptied prematurely. Both of these problems give rise to a deterioration in image quality. At the same time, the content of the buffer store should be as small as possible. According to the invention, not all the frames are coded and transmitted, but a certain number (k) of frames are skipped between each coded frame. The number k is based on the transmission rate R, the frame rate fo of the video signal and minimum value (bR/fo) set for the content of the buffer store. The number of skipped frames is selected so that the buffer store is not emptied below the set lower limit before the next frame is coded. The buffer store content is also regulated by skipping or setting to zero certain components in the bit stream from the coder core. The actual and ideal buffer store contents are determined and selected components of the bit stream are set to zero in dependence on the difference between the actual and the ideal content values. The invention also relates to a device for carrying out the method. The device is preferably constructed as a VLSI circuit.
摘要翻译：本发明涉及一种用于图像编码的方法和装置，其具有在视频信号的传输中具体而不一定是排他的应用。通过编码和量化将视频信号转换为比特流，并将其存储在缓冲存储器中，然后以恒定比特率在传输线上传输。已知技术遇到的问题是防止缓冲存储器中的溢出，缓冲存储器被过早地清空。这两个问题都会导致图像质量的恶化。同时，缓冲存储器的内容应尽可能的小。根据本发明，不是所有的帧都被编码和发送，而是在每个编码帧之间跳过一定数量的帧（k）。数字k基于传输速率R，视频信号的帧速率fo和针对缓冲存储器的内容设置的最小值（bR / fo）。选择跳过的帧的数量，使得在下一帧被编码之前，缓冲存储器不被清空到设定的下限以下。缓冲存储器内容也通过跳过或设置为从编码器核心的位流中的零个特定组件来调节。确定实际和理想的缓冲存储器内容，并且根据实际和理想内容值之间的差异，将比特流的选择分量设置为零。本发明还涉及一种用于执行该方法的装置。该装置优选构造为VLSI电路。

7. 发明授权

US06384862B1 Imaging system and method for interactive control of image quality 失效
标题翻译：用于图像质量交互控制的成像系统和方法
公开(公告)号：US06384862B1
公开(公告)日：2002-05-07
申请号：US08823656
申请日：1997-03-12
申请人： Harald Brusewitz , Bo Burman , Göran Roth
发明人： Harald Brusewitz , Bo Burman , Göran Roth
IPC分类号： H04N5232
CPC分类号： H04N21/6373 , H04N5/23203 , H04N7/147 , H04N7/18 , H04N19/00 , H04N19/103 , H04N19/124 , H04N19/154 , H04N19/162 , H04N19/164 , H04N19/172 , H04N19/587 , H04N19/59 , H04N19/61 , H04N21/6377 , H04N21/658 , H04N21/6587
摘要： An improved imaging system and method for providing increased viewer control over the operating parameters of the imaging system is described. Viewer control is facilitated by including a backchannel within the imaging system, whereby a viewer may adjust spatial and temporal resolution, quantization and other operating parameters of the video transmission.
摘要翻译：描述了一种用于提供对成像系统的操作参数的增加的观看者控制的改进的成像系统和方法。通过在成像系统内包括反向通道来促进观看者控制，由此观众可以调整视频传输的空间和时间分辨率，量化和其他操作参数。

8. 发明授权

US5504849A Method of moving a pixel a subpixel distance 失效
标题翻译：移动像素亚像素距离的方法
公开(公告)号：US5504849A
公开(公告)日：1996-04-02
申请号：US401117
申请日：1995-03-09
申请人： Harald Brusewitz
发明人： Harald Brusewitz
IPC分类号： G06F17/17 , G06T13/00 , H04N7/36 , H04N7/46
CPC分类号： H04N19/523 , G06F17/175 , H04N19/59
摘要： The invention relates to a method of moving a pixel a subpixel distance and is intended to be applied in picture coding methods to determine the value of a pixel located between the fixed pixels on the screen. The pixel value is calculated using a known motion vector and the pixel values located in the vicinity of the corresponding pixel in the previous picture. According to the invention at least 3.times.3 pixels from the previous picture are used and the pixel value is calculated as a sum of the previous pixel values weighted by coefficients depending of the motion vector. The coefficients are preferrably calculated as polynomials of the subpixel part of the motion vector.
摘要翻译：本发明涉及一种使像素移动子像素距离的方法，并且旨在将其应用于图像编码方法中以确定位于屏幕上的固定像素之间的像素的值。使用已知的运动矢量和位于上一图像中的相应像素附近的像素值来计算像素值。根据本发明，使用来自先前图像的至少3×3像素，并且将像素值计算为由依赖于运动矢量的系数加权的先前像素值的和。系数优选地被计算为运动矢量的子像素部分的多项式。

9. 发明授权

US5499251A Method of recovering lost bits in a digital transmission 失效
标题翻译：在数字传输中恢复丢失位的方法
公开(公告)号：US5499251A
公开(公告)日：1996-03-12
申请号：US327816
申请日：1994-10-17
申请人： Harald Brusewitz
发明人： Harald Brusewitz
IPC分类号： H03M13/13 , H04L1/00 , G06F11/00
CPC分类号： H04L1/0057 , H03M13/13
摘要： The invention relates to a method of recovering lost bits in digital transmission. The invention can be applied in ATM networks or networks in which the receiver utilizes soft decoding. A number of data bits dl-dn are transmitted together with a number of control bits cl-ck. The control bits are calculated in the transmitter using a number of parity constants pll-pkn such that a corresponding number of parity relations are fulfilled. In the receiver, the positions of the lost data bits are detected and a number of syndrome bits sl-sk are calculated from the transmitted data bits and control bits. Then the lost data bits can be recovered by mapping syndrome bits indicating the values of the lost data bits. By using the knowledge about the positions of the lost data bits a reduced number of control bits are required compared with the prior art.
摘要翻译：本发明涉及一种在数字传输中恢复丢失位的方法。本发明可以应用于接收机利用软解码的ATM网络或网络中。多个数据位d1-dn与多个控制位cl-ck一起发送。使用多个奇偶校验常数pll-pkn在发射机中计算控制比特，使得满足相应数量的奇偶校验关系。在接收机中，检测丢失数据位的位置，并根据发送的数据位和控制位计算多个校正子位sl-sk。然后可以通过映射表示丢失数据位的值的校正子位来恢复丢失的数据位。通过使用关于丢失数据位的位置的知识，与现有技术相比，需要减少数量的控制位。

10. 发明授权

US4922510A Method and means for variable length coding 失效
标题翻译：可变长度编码的方法和手段
公开(公告)号：US4922510A
公开(公告)日：1990-05-01
申请号：US156683
申请日：1988-02-17
申请人： Harald Brusewitz
发明人： Harald Brusewitz
IPC分类号： H03M7/42
CPC分类号： H03M7/42
摘要： A method and a device are disclosed for variable length coding and decoding of an information block of input signals, with the information being concentrated at the beginning of the block and the block being terminated by a continuous succession of zero words. Two code trees are utilized for coding and decoding the block. The first of the code trees is utilized for coding and decoding the first part of the block up to and including the word before the last non-zero and an end of the block character EOB, and the second code tree is specially designed for coding and decoding the last non-zero word. A switching device provides for switching between the two code trees and associated devices after the character EOB and before the last non-zero word.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式