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公开(公告)号：US10362215B2
公开(公告)日：2019-07-23
申请号：US15893692
申请日：2018-02-12
Applicant: Ningbo University
Inventor： Gangyi Jiang , Mei Yu , Shengli Fan , Yigang Wang
IPC: G02B21/22 , H04N5/232 , G06T7/593 , H04N5/235 , H04N5/238 , G02B21/36 , G02B21/26 , H04N13/271 , H04N13/275 , G02B21/00 , H04N13/246 , H04N13/239 , H04N13/00
Abstract: The present invention discloses a microscopic three-dimensional measurement system and method based on a moving diaphragm. The present invention adds the diaphragm into the existing optical microscopic imaging system to limit light irradiation angle during imaging for reducing the diameter of blur circle, which extends the depth of field and the depth measurement range, so as to achieve the three-dimensional measurement of large-size objects to be measured. Through changing the position of the added diaphragm, two images with different light incident directions are obtained, which is similar to binocular stereo vision, and then the disparity map is used to predict the depth, so as to carry out the 3D scene reconstruction. Since the depth of field of the imaging system is enlarged and the imaging model has certain non-linear characteristics, the present invention uses quadratic function to express the non-linearity, which reduces the measurement error.
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公开(公告)号：US20180198972A1
公开(公告)日：2018-07-12
申请号：US15893692
申请日：2018-02-12
Applicant: Ningbo University
Inventor： Gangyi Jiang , Mei Yu , Shengli Fan , Yigang Wang
CPC classification number: H04N5/23212 , G02B21/0016 , G02B21/26 , G02B21/362 , G06T7/593 , G06T2200/08 , G06T2207/10056 , H04N5/23216 , H04N5/2354 , H04N5/238 , H04N13/239 , H04N13/246 , H04N13/271 , H04N13/275 , H04N2013/0081
Abstract: The present invention discloses a microscopic three-dimensional measurement system and method based on a moving diaphragm. The present invention adds the diaphragm into the existing optical microscopic imaging system to limit light irradiation angle during imaging for reducing the diameter of blur circle, which extends the depth of field and the depth measurement range, so as to achieve the three-dimensional measurement of large-size objects to be measured. Through changing the position of the added diaphragm, two images with different light incident directions are obtained, which is similar to binocular stereo vision, and then the disparity map is used to predict the depth, so as to carry out the 3D scene reconstruction. Since the depth of field of the imaging system is enlarged and the imaging model has certain non-linear characteristics, the present invention uses quadratic function to express the non-linearity, which reduces the measurement error.
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公开(公告)号：US09851549B2
公开(公告)日：2017-12-26
申请号：US14880169
申请日：2015-10-09
Applicant: Ningbo University
Inventor： Mei Yu , Yi Liu , Li Cui , Shengli Fan , Yigang Wang
CPC classification number: G02B21/367 , G02B21/22 , G02B21/244
Abstract: A rapid autofocus method for a stereo microscope includes steps of: calculating a disparity of each of stereo microscopic images in a stereo microscopic calibration image sequence; extracting a clear stereo microscopic image sequence from the stereo microscopic calibration image sequence; then, finding out a largest disparity and a smallest disparity among the disparities of all the stereo microscopic images in the clear stereo microscopic image sequence; at a chosen magnification, arbitrarily acquiring a stereo microscopic image; finally, determining a disparity range according to the disparity of the acquired stereo microscopic image, the largest disparity and the smallest disparity, and realizing an autofocus of a target object in the acquired stereo microscopic images. The disparity range is obtained via once off-line calibration at the same magnification, and applicable to the autofocus at an arbitrary timing.
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公开(公告)号：US20160299329A1
公开(公告)日：2016-10-13
申请号：US14880169
申请日：2015-10-09
Applicant: Ningbo University
Inventor： Mei Yu , Yi Liu , Li Cui , Shengli Fan , Yigang Wang
CPC classification number: G02B21/367 , G02B21/22 , G02B21/244
Abstract: A rapid autofocus method for a stereo microscope includes steps of: calculating a disparity of each of stereo microscopic images in a stereo microscopic calibration image sequence; extracting a clear stereo microscopic image sequence from the stereo microscopic calibration image sequence; then, finding out a largest disparity and a smallest disparity among the disparities of all the stereo microscopic images in the clear stereo microscopic image sequence; at a chosen magnification, arbitrarily acquiring a stereo microscopic image; finally, determining a disparity range according to the disparity of the acquired stereo microscopic image, the largest disparity and the smallest disparity, and realizing an autofocus of a target object in the acquired stereo microscopic images. The disparity range is obtained via once off-line calibration at the same magnification, and applicable to the autofocus at an arbitrary timing.
Abstract translation: 用于立体显微镜的快速自动聚焦方法包括以下步骤：计算立体微观校准图像序列中的每个立体显微镜图像的视差; 从立体显微校准图像序列中提取清晰的立体显微镜图像序列; 然后，在清晰立体显微镜图像序列中发现所有立体显微镜图像的差异之间的最大差异和最小的差异; 以选定的放大倍数任意获取立体显微图像; 最后，根据获取的立体显微镜图像的差异，最大视差和最小视差来确定视差范围，并且在获取的立体显微图像中实现目标对象的自动聚焦。 视差范围通过一次离线校准在相同的放大倍率下获得，并可适用于任意定时的自动对焦。
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