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1. 发明授权

US08896759B2 Method to increase the accuracy of phase correlation motion estimation in low-bit-precision circumstances 有权
标题翻译：在低位精度情况下提高相位运动估计精度的方法
公开(公告)号：US08896759B2
公开(公告)日：2014-11-25
申请号：US12912536
申请日：2010-10-26
申请人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
发明人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
IPC分类号： H04N5/14 , G06T7/20
CPC分类号： H04N5/145 , G06T7/262 , G06T2207/20021 , G06T2207/20056
摘要： A method and system to improve the performance of phase correlation motion estimation for low-bit-precision implementation are described herein. Phase correlation uses the Fast Fourier Transform (FFT) with operations with infinite-precision constants. Since physical implementations use finite-precision arithmetic, there is some loss in precision relative to the ideal infinite-precision case. In low-complexity implementations, it is desirable to use as few bits as possible, and if the precision is too low, the performance of traditional phase correlation suffers. A pre-processing technique is applied to the data prior to taking the FFT, which minimizes the negative effects of finite precision in the FFT and allows high quality results from phase correlation. The pre-processing step is a content-dependent contrast adjustment that maps the range of the input images' pixel values to the range of input values for the FFT. There is no post-processing required after the FFT to compensate for the pre-processing step.
摘要翻译：本文描述了一种用于提高低位精度实现的相位运动估计性能的方法和系统。相位相关使用具有无限精度常数的运算的快速傅里叶变换（FFT）。由于物理实现使用有限精度算术，相对于理想的无限精度情况，精度有一定的损失。在低复杂度实现中，期望尽可能少地使用位，如果精度太低，则传统相位相关的性能受损。在采用FFT之前，将预处理技术应用于数据，这最小化了FFT中有限精度的负面影响，并允许相位相关的高质量结果。预处理步骤是内容相关的对比度调整，其将输入图像的像素值的范围映射到用于FFT的输入值的范围。在FFT之后不需要后处理来补偿预处理步骤。

2. 发明授权

US08842735B2 Method to improve detection of motion with phase correlation 有权
标题翻译：改善相位相关运动检测的方法
公开(公告)号：US08842735B2
公开(公告)日：2014-09-23
申请号：US12912561
申请日：2010-10-26
申请人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
发明人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
IPC分类号： H04N11/02 , H04N19/523 , H04N19/615 , H04N19/51 , H04N19/547
CPC分类号： H04N19/00636 , G06T7/262 , H04N19/523 , H04N19/547 , H04N19/63
摘要： Phase correlation is an established method for computing motion which relies on the ability to find peaks in a computed phase correlation surface. Two methods to improve the ability to detect peaks in the phase correlation surface are described herein. The first method applies a theoretically-derived and spatially-varying gain to the phase correlation surface. The gain compensates for peaks whose amplitudes have been decreased due to windowing effects; such effects are unavoidable in phase correlation. The second method uses concepts from matched filters to improve detection of peaks whose amplitudes are diminished due to a spreading of the peak energy into surrounding positions in the phase correlation surface. Peak detection filters allow such low-amplitude peaks to be properly detected. It is possible to use only the first method, or only the second method or both methods combined.
摘要翻译：相位相关是用于计算运动的已知方法，其依赖于在计算的相位相关表面中找到峰值的能力。这里描述了提高检测相位相关表面中的峰值能力的两种方法。第一种方法将理论上衍生的和空间变化的增益应用于相位相关表面。增益补偿了振幅由于窗口效应而降低的峰值; 这种影响在相位相关中是不可避免的。第二种方法使用来自匹配滤波器的概念来改善由于峰值能量扩散到相位相关表面中的周围位置而使幅度减小的峰值的检测。峰值检测滤波器允许正确检测这样的低幅度峰值。可以仅使用第一种方法，或仅使用第二种方法或两种方法组合。

3. 发明申请

US20120099651A1 METHOD TO IMPROVE DETECTION OF MOTION WITH PHASE CORRELATION 有权
标题翻译：改进相位相关运动检测的方法
公开(公告)号：US20120099651A1
公开(公告)日：2012-04-26
申请号：US12912561
申请日：2010-10-26
申请人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
发明人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
IPC分类号： H04N7/12
CPC分类号： H04N19/00636 , G06T7/262 , H04N19/523 , H04N19/547 , H04N19/63
摘要： Phase correlation is an established method for computing motion which relies on the ability to find peaks in a computed phase correlation surface. Two methods to improve the ability to detect peaks in the phase correlation surface are described herein. The first method applies a theoretically-derived and spatially-varying gain to the phase correlation surface. The gain compensates for peaks whose amplitudes have been decreased due to windowing effects; such effects are unavoidable in phase correlation. The second method uses concepts from matched filters to improve detection of peaks whose amplitudes are diminished due to a spreading of the peak energy into surrounding positions in the phase correlation surface. Peak detection filters allow such low-amplitude peaks to be properly detected. It is possible to use only the first method, or only the second method or both methods combined.
摘要翻译：相位相关是用于计算运动的已知方法，其依赖于在计算的相位相关表面中找到峰值的能力。这里描述了提高检测相位相关表面中的峰值能力的两种方法。第一种方法将理论上衍生的和空间变化的增益应用于相位相关表面。增益补偿了振幅由于窗口效应而降低的峰值; 这种影响在相位相关中是不可避免的。第二种方法使用来自匹配滤波器的概念来改善由于峰值能量扩散到相位相关表面中的周围位置而使幅度减小的峰值的检测。峰值检测滤波器允许正确检测这样的低幅度峰值。可以仅使用第一种方法，或仅使用第二种方法或两种方法组合。

4. 发明授权

US08792559B2 Method to improve accuracy and reliability of motion estimated with phase correlation 有权
标题翻译：提高相位相关估计运动精度和可靠性的方法
公开(公告)号：US08792559B2
公开(公告)日：2014-07-29
申请号：US12912587
申请日：2010-10-26
申请人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
发明人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
IPC分类号： H04N7/12
CPC分类号： H04N5/144 , G06T7/238 , G06T7/262 , G06T2207/10016 , H04N5/235 , H04N19/172 , H04N19/176 , H04N19/521 , H04N19/523 , H04N19/547 , H04N19/577 , H04N19/61
摘要： A method of improving accuracy and reliability of motion estimation is described herein. In one aspect, a 2D neighborhood of phase correlation peak is approximated with an outer-product of two 1D vectors to eliminate the sub-pixel error. In another aspect, estimation of reliability is improved. In yet another aspect, two-pass phase correlation is implemented to eliminate sub-pel motion bias.
摘要翻译：本文描述了提高运动估计的精度和可靠性的方法。在一个方面，相位相关峰的2D邻域用两个1D矢量的外积近似，以消除子像素误差。另一方面，提高了可靠性的估计。在另一方面，实现双通相位相关以消除子像素运动偏移。

5. 发明申请

US20120098986A1 METHOD TO IMPROVE ACCURACY AND RELIABILITY OF MOTION ESTIMATED WITH PHASE CORRELATION 有权
标题翻译：提高相位相关运动估计精度和可靠性的方法
公开(公告)号：US20120098986A1
公开(公告)日：2012-04-26
申请号：US12912587
申请日：2010-10-26
申请人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
发明人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
IPC分类号： H04N5/14 , H04N5/228
CPC分类号： H04N5/144 , G06T7/238 , G06T7/262 , G06T2207/10016 , H04N5/235 , H04N19/172 , H04N19/176 , H04N19/521 , H04N19/523 , H04N19/547 , H04N19/577 , H04N19/61
摘要： A method of improving accuracy and reliability of motion estimation is described herein. In one aspect, a 2D neighborhood of phase correlation peak is approximated with an outer-product of two 1D vectors to eliminate the sub-pixel error. In another aspect, estimation of reliability is improved. In yet another aspect, two-pass phase correlation is implemented to eliminate sub-pel motion bias.
摘要翻译：本文描述了提高运动估计的精度和可靠性的方法。在一个方面，相位相关峰的2D邻域用两个1D矢量的外积近似，以消除子像素误差。另一方面，提高了可靠性的估计。在另一方面，实现双通相位相关以消除子像素运动偏移。

6. 发明申请

US20120098985A1 METHOD TO INCREASE THE ACCURACY OF PHASE CORRELATION MOTION ESTIMATION IN LOW-BIT-PRECISION CIRCUMSTANCES 有权
标题翻译：提高低位精密电路相位运动估计精度的方法
公开(公告)号：US20120098985A1
公开(公告)日：2012-04-26
申请号：US12912536
申请日：2010-10-26
申请人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
发明人： Mark Robertson , Ming-Chang Liu , Yoshihiro Murakami , Toru Kurata , Yutaka Yoneda
IPC分类号： H04N5/14 , H04N5/225
CPC分类号： H04N5/145 , G06T7/262 , G06T2207/20021 , G06T2207/20056
摘要： A method and system to improve the performance of phase correlation motion estimation for low-bit-precision implementation are described herein. Phase correlation uses the Fast Fourier Transform (FFT) with operations with infinite-precision constants. Since physical implementations use finite-precision arithmetic, there is some loss in precision relative to the ideal infinite-precision case. In low-complexity implementations, it is desirable to use as few bits as possible, and if the precision is too low, the performance of traditional phase correlation suffers. A pre-processing technique is applied to the data prior to taking the FFT, which minimizes the negative effects of finite precision in the FFT and allows high quality results from phase correlation. The pre-processing step is a content-dependent contrast adjustment that maps the range of the input images' pixel values to the range of input values for the FFT. There is no post-processing required after the FFT to compensate for the pre-processing step.
摘要翻译：本文描述了一种用于提高低位精度实现的相位运动估计性能的方法和系统。相位相关使用具有无限精度常数的运算的快速傅里叶变换（FFT）。由于物理实现使用有限精度算术，相对于理想的无限精度情况，精度有一定的损失。在低复杂度实现中，期望尽可能少地使用位，如果精度太低，则传统相位相关的性能受损。在采用FFT之前，将预处理技术应用于数据，这最小化了FFT中有限精度的负面影响，并允许相位相关的高质量结果。预处理步骤是内容相关的对比度调整，其将输入图像的像素值的范围映射到用于FFT的输入值的范围。在FFT之后不需要后处理来补偿预处理步骤。

7. 发明申请

US20100265357A1 GENERATION OF SIMULATED LONG EXPOSURE IMAGES IN RESPONSE TO MULTIPLE SHORT EXPOSURES 失效
标题翻译：模拟长时间暴露影像的生成对多种短期暴露的反应
公开(公告)号：US20100265357A1
公开(公告)日：2010-10-21
申请号：US12426101
申请日：2009-04-17
申请人： Ming-Chang Liu , Mark Robertson
发明人： Ming-Chang Liu , Mark Robertson
IPC分类号： H04N9/73 , H04N5/235
CPC分类号： G06T5/50 , G06T11/00 , G06T2207/10016 , G06T2207/20216 , H04N5/235 , H04N5/2355
摘要： Simulating a long exposure-time image from a sequence of short exposure-time images captured at slightly different times. The sequence of images is combined in a temporal integration process to create a long exposure image that simulates the output from a still camera, steadied by a tripod, whose light-sensitive material has been exposed to the same scene from the time of the beginning of the first input image of the sequence to the last image of the input sequence. The method overcomes limitations of hand-held video and image recording devices, allowing the user to easily create effects normally associated with high-end digital still cameras under expert control.
摘要翻译：从稍微不同时间拍摄的短曝光时间图像序列模拟长曝光时间图像。图像序列在时间积分过程中组合以创建长时间曝光图像，该长曝光图像模拟来自静止照相机的输出，由三脚架稳定，三角架的感光材料已经从开始时开始暴露于同一场景将序列的第一个输入图像输入到输入序列的最后一个图像。该方法克服了手持视频和图像记录设备的局限性，允许用户在专家控制下轻松创建通常与高端数码相机相关的效果。

8. 发明授权

US08988520B2 Method and apparatus for improving depth of field (DOF) in microscopy 有权
标题翻译：在显微镜下改善景深（DOF）的方法和装置
公开(公告)号：US08988520B2
公开(公告)日：2015-03-24
申请号：US13553265
申请日：2012-07-19
申请人： Ming-Chang Liu , Mark Robertson
发明人： Ming-Chang Liu , Mark Robertson
IPC分类号： H04N9/47 , G02B21/24 , G02B21/36 , H04N19/00
CPC分类号： G02B21/244 , G02B21/367 , G06T9/00 , H04N19/00
摘要： A method for improving depth for field (DOF) in microscopic imaging, the method comprising combining a sequence of images captured from different focal distances to form an all-focus image, comprising computing a focus measure at every pixel, finding the largest peaks at each position in the focus measure as multiple candidate values and blending the multiple candidates values according to the focus measure to determine the all-focus image.
摘要翻译：一种用于在微观成像中改善场的深度（DOF）的方法，所述方法包括组合从不同焦距获取的图像序列以形成全焦点图像，包括计算每个像素处的聚焦度量，在每个像素处找到最大峰值将焦点测量中的位置作为多个候选值，并根据聚焦度量混合多个候选值以确定全焦点图像。

9. 发明申请

US20120263356A1 METHOD FOR EFFICIENT REPRESENTATION AND PROCESSING OF COLOR PIXEL DATA IN DIGITAL PATHOLOGY IMAGES 有权
标题翻译：数字图像中彩色像素数据的有效表示和处理方法
公开(公告)号：US20120263356A1
公开(公告)日：2012-10-18
申请号：US13085280
申请日：2011-04-12
申请人： Mark Robertson , Ming-Chang Liu , Ximin Zhang
发明人： Mark Robertson , Ming-Chang Liu , Ximin Zhang
IPC分类号： G06K9/00
CPC分类号： H04N1/642 , G06T9/007 , H04N19/46 , H04N19/60 , H04N19/85
摘要： Efficient representation of color digital pathology images (DPI) is described herein, which is accomplished by exploiting properties unique to such images. The method decomposes the data into constituent parts whose relative importance is able to be specified, allowing the data to be accurately represented with less bit precision, less spatial resolution or less spectral resolution. Two specific areas where the method is able to be utilized include: (1) more-efficient image compression; and (2) more efficient processing of the data. Efficient image compression is accomplished by assigning fewer bits to less-important colors. Efficient data processing is accomplished by processing only those colors, or combinations of colors, that are deemed important.
摘要翻译：本文描述了彩色数字病理图像（DPI）的有效表示，其通过利用这些图像独特的属性来实现。该方法将数据分解成能够指定相对重要性的组成部分，允许以较少的位精度，较小的空间分辨率或较少的光谱分辨率精确地表示数据。该方法能够利用的两个具体领域包括：（1）更有效的图像压缩; 和（2）更有效地处理数据。通过将较少的位分配给不太重要的颜色来实现高效图像压缩。高效的数据处理是通过仅处理被认为重要的那些颜色或颜色的组合来实现的。

10. 发明申请

US20090238535A1 MERGING VIDEO WITH TIME-DECIMATED HIGH-RESOLUTION IMAGERY TO FORM HIGH-RESOLUTION VIDEO FRAMES 有权
标题翻译：合并高分辨率高分辨率图像的视频融合高分辨率视频框架
公开(公告)号：US20090238535A1
公开(公告)日：2009-09-24
申请号：US12053443
申请日：2008-03-21
申请人： Mark Robertson , Ming-Chang Liu
发明人： Mark Robertson , Ming-Chang Liu
IPC分类号： H04N11/24
CPC分类号： G06T3/4053
摘要： Apparatus and methods for generating a shutter-time compensated high spatial resolution (HR) image output by enhancing lower spatial resolution (LR) video images with information obtained from higher spatial resolution still images which are temporally decimated. Super-resolved images and LR SAD information is generated from the LR images and used for directing the extracting of information from the temporally decimated HR images to enhance the spatial resolution of the LR images in a blending process. By way of example blending can comprise: motion estimation, motion compensation of a temporally displaced HR still images and a super-resolved (SR) image input, transformation (e.g., DCT), generating motion error output, blending motion compensated images in response to LR motion error information; inverse-transformation into a shutter-time compensated HR video image output. Accordingly, a more cost effective solution is taught for obtaining a desired shutter time and video resolution.
摘要翻译：用于通过利用从时间上被抽取的较高空间分辨率静止图像获得的信息增强较低空间分辨率（LR）视频图像来产生快门时间补偿的高空间分辨率（HR）图像输出的装置和方法。从LR图像生成超分辨图像和LR SAD信息，并且用于引导从时间抽取的HR图像中提取信息，以在混合处理中增强LR图像的空间分辨率。作为示例，混合可以包括：运动估计，时间偏移HR静止图像和超分辨（SR）图像输入的运动补偿，变换（例如，DCT），产生运动误差输出，混合运动补偿图像以响应于 LR运动误差信息; 逆变换成快门时间补偿的HR视频图像输出。因此，教导了更有成本效益的解决方案以获得期望的快门时间和视频分辨率。

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