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1. 发明申请

US20140126818A1 METHOD OF OCCLUSION-BASED BACKGROUND MOTION ESTIMATION 审中-公开
标题翻译：基于OCCLUSION的背景运动估计方法
公开(公告)号：US20140126818A1
公开(公告)日：2014-05-08
申请号：US13670296
申请日：2012-11-06
申请人： SONY CORPORATION
发明人： Jianing Wei
IPC分类号： G06K9/34
CPC分类号： G06T7/215
摘要： A technique for estimating background motion in monocular video sequences is described herein. The technique is based on occlusion information contained in video sequences. Two algorithms are described for estimating background motion: one fits well for general cases, and the other fits well for a case when available memory is very limited. The significance of the technique includes: a motion segmentation algorithm with adaptive and temporally stable estimate of the number of objects is developed, two algorithms are developed to infer occlusion relations among segmented objects using the detected occlusions and background motion estimation from the inferred occlusion relations.
摘要翻译：本文描述了用于估计单眼视频序列中的背景运动的技术。该技术基于包含在视频序列中的遮挡信息。描述了用于估计背景运动的两种算法：一种适用于一般情况，另一种适用于可用存储器非常有限的情况。该技术的意义包括：开发了一种具有自适应和时间稳定的对象数量估计的运动分割算法，利用推断的遮挡关系，利用检测到的遮挡和背景运动估计，开发了两种算法来推断分割对象之间的遮挡关系。

2. 发明申请

US20170178296A1 FOCUS DETECTION 有权
公开(公告)号：US20170178296A1
公开(公告)日：2017-06-22
申请号：US14975315
申请日：2015-12-18
申请人： Sony Corporation
发明人： Pingshan Li , Jianing Wei , Xue Tu , Alexander Berestov , Takami Mizukura , Akira Matsui , Tomonori Shuda
IPC分类号： G06T5/00 , G03B13/36 , H04N5/232
CPC分类号： G06T5/003 , G03B13/36 , G06T7/0002 , G06T2207/20056 , G06T2207/20064 , G06T2207/30168 , H04N5/23212
摘要： Focus detection is to determine whether an image is in focus or not. Focus detection is able to be used for improving camera autofocus performance. Focus detection by using only one feature does not provide enough reliability to distinguish in-focus and slightly out-of-focus images. A focus detection algorithm of combining multiple features used to evaluate sharpness is described herein. A large image data set with in-focus and out-of-focus images is used to develop the focus detector for separating the in-focus images from out-of-focus images. Many features such as iterative blur estimation, FFT linearity, edge percentage, wavelet energy ratio, improved wavelet energy ratio, Chebyshev moment ratio and chromatic aberration features are able to be used to evaluate sharpness and determine big blur images.

3. 发明授权

US09214011B2 Camera defocus direction estimation 有权
标题翻译：相机散焦方向估计
公开(公告)号：US09214011B2
公开(公告)日：2015-12-15
申请号：US14269990
申请日：2014-05-05
申请人： SONY CORPORATION
发明人： Jianing Wei , Alexander Berestov
IPC分类号： G06T5/00 , G06T5/10
CPC分类号： G06T5/003 , G06T5/001 , G06T5/10 , G06T2207/20021 , G06T2207/20056 , G06T2207/20081
摘要： Apparatus and methods for estimating defocus direction from a single image obtained, such as in a digital camera apparatus, are presented. To determine defocus direction, point spread function (PSF) differences for the image are evaluated in the frequency domain, with frequency pairs being found having largest difference in their Fourier transform magnitudes, from which a direction estimate feature is extracted, and defocus direction estimated based on relation of estimated feature and statistics derived from camera image tests. The method can be applied for controlling autofocus mechanisms in cameras, or other applications requiring rapid determination of defocus directions, such as from a single image.
摘要翻译：提出了用于从诸如数字照相机装置中获得的单个图像估计散焦方向的装置和方法。为了确定散焦方向，在频域中评估图像的点扩散函数（PSF）差异，其中找到的频率对在它们的傅立叶变换幅度中具有最大差异，从其中提取方向估计特征，并且基于散焦方向估计关于从相机图像测试得到的估计特征和统计量的关系。该方法可以用于控制相机中的自动对焦机制，或者需要快速确定散焦方向的其他应用，例如从单个图像。

4. 发明授权

US09715721B2 Focus detection 有权
公开(公告)号：US09715721B2
公开(公告)日：2017-07-25
申请号：US14975315
申请日：2015-12-18
申请人： Sony Corporation
发明人： Pingshan Li , Jianing Wei , Xue Tu , Alexander Berestov , Takami Mizukura , Akira Matsui , Tomonori Shuda
IPC分类号： G06K9/00 , G06T5/00 , H04N5/232 , G03B13/36
CPC分类号： G06T5/003 , G03B13/36 , G06T7/0002 , G06T2207/20056 , G06T2207/20064 , G06T2207/30168 , H04N5/23212
摘要： Focus detection is to determine whether an image is in focus or not. Focus detection is able to be used for improving camera autofocus performance. Focus detection by using only one feature does not provide enough reliability to distinguish in-focus and slightly out-of-focus images. A focus detection algorithm of combining multiple features used to evaluate sharpness is described herein. A large image data set with in-focus and out-of-focus images is used to develop the focus detector for separating the in-focus images from out-of-focus images. Many features such as iterative blur estimation, FFT linearity, edge percentage, wavelet energy ratio, improved wavelet energy ratio, Chebyshev moment ratio and chromatic aberration features are able to be used to evaluate sharpness and determine big blur images.

5. 发明授权

US09646225B2 Defocus estimation from single image based on Laplacian of Gaussian approximation 有权
公开(公告)号：US09646225B2
公开(公告)日：2017-05-09
申请号：US14832781
申请日：2015-08-21
申请人： SONY CORPORATION
发明人： Pingshan Li , Jianing Wei
IPC分类号： H04N5/232 , G06K9/62 , G06T5/00
CPC分类号： G06K9/6215 , G06K9/036 , G06T5/00 , G06T5/003 , G06T5/50 , G06T2207/30168 , H04N5/23212
摘要： A defocus estimation algorithm is described herein. The defocus estimation algorithm utilizes a single image. A Laplacian of Gaussian approximation is determined by computing a difference of Gaussian. Defocus blur is able to be estimated by computing a blur difference between two images using the difference of Gaussian.

6. 发明申请

US20170053187A1 DEFOCUS ESTIMATION FROM SINGLE IMAGE BASED ON LAPLACIAN OF GAUSSIAN APPROXIMATION 有权
标题翻译：基于高斯大学拉普拉斯的单一图像的偏差估计
公开(公告)号：US20170053187A1
公开(公告)日：2017-02-23
申请号：US14832781
申请日：2015-08-21
申请人： SONY CORPORATION
发明人： Pingshan Li , Jianing Wei
IPC分类号： G06K9/62 , G06T5/00 , H04N5/232
CPC分类号： G06K9/6215 , G06K9/036 , G06T5/00 , G06T5/003 , G06T5/50 , G06T2207/30168 , H04N5/23212
摘要： A defocus estimation algorithm is described herein. The defocus estimation algorithm utilizes a single image. A Laplacian of Gaussian approximation is determined by computing a difference of Gaussian. Defocus blur is able to be estimated by computing a blur difference between two images using the difference of Gaussian.
摘要翻译：这里描述散焦估计算法。散焦估计算法利用单个图像。高斯近似的拉普拉斯算子通过计算高斯差来确定。散焦模糊能够通过使用高斯差计算两个图像之间的模糊差异来估计。

7. 发明申请

US20150317770A1 CAMERA DEFOCUS DIRECTION ESTIMATION 有权
标题翻译：相机偏心方向估计
公开(公告)号：US20150317770A1
公开(公告)日：2015-11-05
申请号：US14269990
申请日：2014-05-05
申请人： SONY CORPORATION
发明人： Jianing Wei , Alexander Berestov
IPC分类号： G06T5/00
CPC分类号： G06T5/003 , G06T5/001 , G06T5/10 , G06T2207/20021 , G06T2207/20056 , G06T2207/20081
摘要： Apparatus and methods for estimating defocus direction from a single image obtained, such as in a digital camera apparatus, are presented. To determine defocus direction, point spread function (PSF) differences for the image are evaluated in the frequency domain, with frequency pairs being found having largest difference in their Fourier transform magnitudes, from which a direction estimate feature is extracted, and defocus direction estimated based on relation of estimated feature and statistics derived from camera image tests. The method can be applied for controlling autofocus mechanisms in cameras, or other applications requiring rapid determination of defocus directions, such as from a single image.
摘要翻译：提出了用于从诸如数字照相机装置中获得的单个图像估计散焦方向的装置和方法。为了确定散焦方向，在频域中评估图像的点扩散函数（PSF）差异，其中找到的频率对在它们的傅立叶变换幅度中具有最大差异，从其中提取方向估计特征，并且基于散焦方向估计关于从相机图像测试得到的估计特征和统计量的关系。该方法可以用于控制相机中的自动对焦机制，或者需要快速确定散焦方向的其他应用，例如从单个图像。

8. 发明申请

US20150071488A1 IMAGING SYSTEM WITH VANISHING POINT DETECTION USING CAMERA METADATA AND METHOD OF OPERATION THEREOF 审中-公开
标题翻译：使用摄像机元数据进行视觉点检测的成像系统及其操作方法
公开(公告)号：US20150071488A1
公开(公告)日：2015-03-12
申请号：US14024566
申请日：2013-09-11
申请人： Sony Corporation
发明人： Jianing Wei
IPC分类号： G06T7/00
CPC分类号： G06T7/536 , G06T2207/20061
摘要： A system and method of operation of an imaging system includes: an image sensor for capturing a source image having image metadata; a segment image calculated from the source image; a compass angle calculated for producing a maximum value of an a posteriori probability of the compass angle, the a posteriori probability of the compass angle based on the segment image and the image metadata; an x-axis vanishing point, a y-axis vanishing point, and a z-axis vanishing point calculated based on the compass angle and the image metadata; and a display unit for displaying a display image, the display image based on the source image, the x-axis vanishing point, the y-axis vanishing point, and the z-axis vanishing point.
摘要翻译：一种成像系统的操作系统和方法，包括：图像传感器，用于捕获具有图像元数据的源图像; 从源图像计算的段图像; 计算出用于产生罗盘角度的后验概率的最大值的罗盘角，基于段图像的罗盘角的后验概率和图像元数据; 基于罗盘角和图像元数据计算的x轴消失点，y轴消失点和z轴消失点; 以及显示单元，用于显示显示图像，基于源图像的显示图像，x轴消失点，y轴消失点和z轴消失点。

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