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公开(公告)号：US09215357B2
公开(公告)日：2015-12-15
申请号：US14523648
申请日：2014-10-24
Applicant: QUALCOMM Technologies, Inc.
Inventor： Meir Tzur
CPC classification number: H04N5/225 , G06T7/50 , H04N5/23212
Abstract: Embodiments are directed towards performing depth estimation within a digital camera system based on interpolation of inverse focus statistics. After an image is captured, various statistics or focus measure may be calculated using, for example, a high pass filter. Depth is estimated by interpolating the inverse of the statistics for three positions of focus for the image. The inverse of the statistics, St(n), may be 1/St(n), or 1/St2(n), or even 1/StZ(n), where Z≧1. Several approaches to interpolating the inverse values of the statistics to obtain a depth estimate are disclosed, including a general parabolic minimum approach, using a parabolic minimum within a progressive scheme, or within a continuous AF scheme. The depth estimate may then be used for a variety of applications, including automatic focusing, as well as converting 2D images to 3D images.
Abstract translation: 实施例旨在基于逆焦点统计的内插在数字照相机系统内执行深度估计。 在拍摄图像之后，可以使用例如高通滤波器来计算各种统计或焦点测量。 通过内插图像的三个焦点位置的统计量的倒数来估计深度。 统计量St（n）的倒数可以是1 / St（n）或1 / St2（n），或甚至1 / StZ（n），其中Z≥1。 公开了用于内插统计量的逆值以获得深度估计的几种方法，包括一般抛物线最小方法，在逐行方案内使用抛物线最小值，或在连续AF方案内。 深度估计可以用于各种应用，包括自动对焦，以及将2D图像转换为3D图像。
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公开(公告)号：US20150042841A1
公开(公告)日：2015-02-12
申请号：US14523648
申请日：2014-10-24
Applicant: QUALCOMM Technologies, Inc.
Inventor： Meir Tzur
CPC classification number: H04N5/225 , G06T7/50 , H04N5/23212
Abstract: Embodiments are directed towards performing depth estimation within a digital camera system based on interpolation of inverse focus statistics. After an image is captured, various statistics or focus measure may be calculated using, for example, a high pass filter. Depth is estimated by interpolating the inverse of the statistics for three positions of focus for the image. The inverse of the statistics, St(n), may be 1/St(n), or 1/St2(n), or even 1/StZ(n), where Z≧1. Several approaches to interpolating the inverse values of the statistics to obtain a depth estimate are disclosed, including a general parabolic minimum approach, using a parabolic minimum within a progressive scheme, or within a continuous AF scheme. The depth estimate may then be used for a variety of applications, including automatic focusing, as well as converting 2D images to 3D images.
Abstract translation: 实施例旨在基于逆焦点统计的内插在数字照相机系统内执行深度估计。 在拍摄图像之后，可以使用例如高通滤波器来计算各种统计或焦点测量。 通过内插图像的三个焦点位置的统计量的倒数来估计深度。 统计量St（n）的倒数可以是1 / St（n）或1 / St2（n），或甚至1 / StZ（n），其中Z≥1。 公开了用于内插统计量的逆值以获得深度估计的几种方法，包括一般抛物线最小方法，在逐行方案内使用抛物线最小值，或在连续AF方案内。 深度估计可以用于各种应用，包括自动对焦，以及将2D图像转换为3D图像。
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公开(公告)号：US08896747B2
公开(公告)日：2014-11-25
申请号：US13675944
申请日：2012-11-13
Applicant: QUALCOMM Technologies, Inc.
Inventor： Meir Tzur
CPC classification number: H04N5/225 , G06T7/50 , H04N5/23212
Abstract: Embodiments are directed towards performing depth estimation within a digital camera system based on interpolation of inverse focus statistics. After an image is captured, various statistics or focus measure may be calculated using, for example, a high pass filter. Depth is estimated by interpolating the inverse of the statistics for three positions of focus for the image. The inverse of the statistics, St(n), may be 1/St(n), or 1/St2(n), or even 1/StZ(n), where Z≧1. Several approaches to interpolating the inverse values of the statistics to obtain a depth estimate are disclosed, including a general parabolic minimum approach, using a parabolic minimum within a progressive scheme, or within a continuous AF scheme. The depth estimate may then be used for a variety of applications, including automatic focusing, as well as converting 2D images to 3D images.
Abstract translation: 实施例旨在基于逆焦点统计的内插在数字照相机系统内执行深度估计。 在拍摄图像之后，可以使用例如高通滤波器来计算各种统计或焦点测量。 通过内插图像的三个焦点位置的统计量的倒数来估计深度。 统计量St（n）的倒数可以是1 / St（n）或1 / St2（n），或甚至1 / StZ（n），其中Z≥1。 公开了用于内插统计量的逆值以获得深度估计的几种方法，包括一般抛物线最小方法，在逐行方案内使用抛物线最小值，或在连续AF方案内。 深度估计可以用于各种应用，包括自动对焦，以及将2D图像转换为3D图像。
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