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1. 发明授权

US09275431B2 Method and system for calibrating laser measuring apparatus 有权
标题翻译：用于校准激光测量装置的方法和系统
公开(公告)号：US09275431B2
公开(公告)日：2016-03-01
申请号：US14451451
申请日：2014-08-05
申请人： National Taiwan University of Science and Technology
发明人： Tzung-Han Lin
IPC分类号： G06K9/00 , G06T3/00 , G01B11/25 , G06T7/00
CPC分类号： G06T3/0006 , G01B11/2504 , G06T3/00 , G06T7/521 , G06T7/80 , G06T2207/30204
摘要： A method for calibrating a laser measuring apparatus having a laser illumination unit and an image capturing unit includes the following steps. A calibration board having at least one slit gap and a plurality of markers is provided. The relative position between the calibration board and the laser illumination unit is adjusted to allow a slit laser beam emitted by the laser illumination unit to pass through the at least one slit. The calibration board is captured by the image capturing unit to generate a calibration board image. The calibration board image is processed so as to obtain a camera coordinate of each of the markers. A plurality of calibration parameters are calculated according to the camera coordinate and an actual coordinate of each of the markers so as to obtain actual coordinates of an object captured in an object image generated by the laser measuring apparatus.
摘要翻译：一种用于校准具有激光照射单元和图像捕获单元的激光测量装置的方法包括以下步骤。提供了具有至少一个狭缝间隙和多个标记的校准板。校准板和激光照射单元之间的相对位置被调整以允许由激光照射单元发射的狭缝激光束通过至少一个狭缝。校准板由图像捕获单元捕获以产生校准板图像。处理校准板图像以获得每个标记的相机坐标。根据相机坐标和每个标记的实际坐标来计算多个校准参数，以获得由激光测量装置产生的对象图像中拍摄的物体的实际坐标。

2. 发明授权

US09972075B2 Image correction method of projector and image correction system 有权
公开(公告)号：US09972075B2
公开(公告)日：2018-05-15
申请号：US15294350
申请日：2016-10-14
申请人： National Taiwan University of Science and Technology
发明人： Tzung-Han Lin
IPC分类号： G06T5/00 , G06T7/00 , H04N9/31 , G06T5/50
CPC分类号： G06T5/006 , G06T3/0018 , G06T5/50 , G06T7/0018 , G06T7/80 , G06T2207/20216 , H04N9/3185
摘要： An image correction method of projector and an image correction system are provided. An image capturing apparatus shoots a physical calibration panel to obtain a first image, and shoots an outputting image of a calibration panel pattern on a projection screen outputted from the projector to obtain a second image. A processor analyzes the first image to obtain a first calibration parameter and a first homography matrix, and performs an undistorting operation for the second image based on the first calibration parameter to obtain a third image. The processor analyzes the third image to obtain a second calibration parameter and a second homography matrix of the projector. The processor performs a compensating operation for an original image to be outputted from the projector based on the second calibration parameter, the second homography matrix and the first homography matrix to obtain a compensated image.

3. 发明申请

US20160052210A1 MULTIFUNCTIONAL 3D SCANNING AND PRINTING APPARATUS 有权
标题翻译：多功能3D扫描和打印设备
公开(公告)号：US20160052210A1
公开(公告)日：2016-02-25
申请号：US14584489
申请日：2014-12-29
申请人： National Taiwan University of Science and Technology
发明人： Jeng-Ywan Jeng , Tzung-Han Lin , Yi-Jane Chen
IPC分类号： B29C67/00 , H04N1/047 , H04N1/028 , G05B15/02
CPC分类号： B29C64/00 , B29C64/386 , B33Y50/00 , B33Y50/02 , G05B15/02 , H04N1/02815 , H04N1/02895 , H04N1/047
摘要： A multifunctional 3D scanning/printing apparatus is disclosed in the present invention, wherein the multifunctional apparatus comprises both 3D scanning and printing functions, by sharing a Digital Light Processing (DLP) projector or using a beam splitter (for example, a transflective mirror or a flipping mirror, etc.) to achieve a configuration for all sorts of 3D scanning and 3D printing equipment with the required elements within the same apparatus, and uses the accuracy-increasing apparatus (for example, a prism, a lenticular lens, other asymmetric lenses, etc.) so that the measurement accuracy from the two image sensors will not be restricted by the limited space.
摘要翻译：在本发明中公开了一种多功能3D扫描/打印设备，其中多功能设备包括3D扫描和打印功能，通过共享数字光处理（DLP）投影仪或使用分束器（例如，半透反射镜或翻转反射镜等），以实现具有所需元件在同一装置内的各种3D扫描和3D打印设备的配置，并且使用精度提高装置（例如，棱镜，双凸透镜，其它不对称透镜等），使得来自两个图像传感器的测量精度将不受限于有限的空间。

4. 发明授权

US11546571B1 Method and system for generating a multiview stereoscopic image 有权
公开(公告)号：US11546571B1
公开(公告)日：2023-01-03
申请号：US17535581
申请日：2021-11-25
申请人： National Taiwan University of Science and Technology
发明人： Tzung-Han Lin
IPC分类号： H04N13/246 , H04N13/296 , H04N13/239 , H04N13/282
摘要： A method and a system for generating a multiview stereoscopic image are provided. The method includes the following steps. An image capturing apparatus captures a real calibration panel to obtain multiple images, and a processor obtains a datum image and multiple images to be calibrated by analyzing the images including the real calibration panel. The processor respectively calculates a homography matrix of each of the images to be calibrated corresponding to the datum image according to the datum image and the images to be calibrated. The processor obtains a calibration matrix of the homography matrix by performing a matrix disassembly calculation on each of the homography matrices. The processor multiplies the images to be calibrated by the corresponding calibration matrix to obtain multiple calibrated images. The processor outputs the multiview stereoscopic image including the datum image and the calibrated images.

5. 发明授权

US09969121B2 Multifunctional 3D scanning and printing apparatus 有权
公开(公告)号：US09969121B2
公开(公告)日：2018-05-15
申请号：US14584489
申请日：2014-12-29
申请人： National Taiwan University of Science and Technology
发明人： Jeng-Ywan Jeng , Tzung-Han Lin , Yi-Jane Chen
IPC分类号： G06F19/00 , B29C64/00 , G05B15/02 , H04N1/047 , H04N1/028 , B29C67/00 , B33Y50/00 , B33Y50/02 , B29C64/386
CPC分类号： B29C64/00 , B29C64/386 , B33Y50/00 , B33Y50/02 , G05B15/02 , H04N1/02815 , H04N1/02895 , H04N1/047
摘要： A multifunctional 3D scanning/printing apparatus is disclosed in the present invention, wherein the multifunctional apparatus comprises both 3D scanning and printing functions, by sharing a Digital Light Processing (DLP) projector or using a beam splitter (for example, a transflective mirror or a flipping mirror, etc.) to achieve a configuration for all sorts of 3D scanning and 3D printing equipment with the required elements within the same apparatus, and uses the accuracy-increasing apparatus (for example, a prism, a lenticular lens, other asymmetric lenses, etc.) so that the measurement accuracy from the two image sensors will not be restricted by the limited space.

6. 发明申请

US20180061021A1 IMAGE CORRECTION METHOD OF PROJECTOR AND IMAGE CORRECTION SYSTEM 有权
公开(公告)号：US20180061021A1
公开(公告)日：2018-03-01
申请号：US15294350
申请日：2016-10-14
申请人： National Taiwan University of Science and Technology
发明人： Tzung-Han Lin
IPC分类号： G06T5/00 , G06T7/00 , H04N9/31 , G06T5/50
CPC分类号： G06T5/006 , G06T3/0018 , G06T5/50 , G06T7/0018 , G06T7/80 , G06T2207/20216 , H04N9/3185
摘要： An image correction method of projector and an image correction system are provided. An image capturing apparatus shoots a physical calibration panel to obtain a first image, and shoots an outputting image of a calibration panel pattern on a projection screen outputted from the projector to obtain a second image. A processor analyzes the first image to obtain a first calibration parameter and a first homography matrix, and performs an undistorting operation for the second image based on the first calibration parameter to obtain a third image. The processor analyzes the third image to obtain a second calibration parameter and a second homography matrix of the projector. The processor performs a compensating operation for an original image to be outputted from the projector based on the second calibration parameter, the second homography matrix and the first homography matrix to obtain a compensated image.

7. 发明申请

US20150109418A1 METHOD AND SYSTEM FOR THREE-DIMENSIONAL DATA ACQUISITION 有权
标题翻译：用于三维数据采集的方法和系统
公开(公告)号：US20150109418A1
公开(公告)日：2015-04-23
申请号：US14183539
申请日：2014-02-19
申请人： National Taiwan University of Science and Technology
发明人： Tzung-Han Lin
IPC分类号： G06T7/00 , G06T17/10 , H04N13/02
CPC分类号： G06T7/80 , G01B11/2522 , G06T7/593 , G06T7/85
摘要： A method for three-dimensional data acquisition, adapted to acquire three-dimensional data of an object, includes the following steps. A laser light is projected onto a plurality of regions on the surface of the object so as to form a plurality of features within each of the regions. For each of the regions, the object and the features are captured from a first direction and a second direction simultaneously so as to generate a first object image corresponding to the first direction and a second object image corresponding to the second direction. For each of the regions, the first object image and the second object image are processed so as to obtain the two-dimensional coordinates of the features therein. The three-dimensional data of the object is obtained according to the two-dimensional data of the features in the first object image and the second object image corresponding to each of the regions.
摘要翻译：适用于获取对象的三维数据的三维数据采集方法包括以下步骤。将激光投射到物体表面上的多个区域上，以便在每个区域内形成多个特征。对于每个区域，从第一方向和第二方向同时捕获对象和特征，以便生成对应于第一方向的第一对象图像和对应于第二方向的第二对象图像。对于每个区域，处理第一对象图像和第二对象图像，以便获得其中的特征的二维坐标。根据第一对象图像中的特征的二维数据和对应于每个区域的第二对象图像，获得对象的三维数据。

8. 发明授权

US09886759B2 Method and system for three-dimensional data acquisition 有权
公开(公告)号：US09886759B2
公开(公告)日：2018-02-06
申请号：US14183539
申请日：2014-02-19
申请人： National Taiwan University of Science and Technology
发明人： Tzung-Han Lin
IPC分类号： G06T7/00 , G01B11/25 , G06T7/80 , G06T7/593
CPC分类号： G06T7/80 , G01B11/2522 , G06T7/593 , G06T7/85
摘要： A method for three-dimensional data acquisition, adapted to acquire three-dimensional data of an object, includes the following steps. A laser light is projected onto a plurality of regions on the surface of the object so as to form a plurality of features within each of the regions. For each of the regions, the object and the features are captured from a first direction and a second direction simultaneously so as to generate a first object image corresponding to the first direction and a second object image corresponding to the second direction. For each of the regions, the first object image and the second object image are processed so as to obtain the two-dimensional coordinates of the features therein. The three-dimensional data of the object is obtained according to the two-dimensional data of the features in the first object image and the second object image corresponding to each of the regions.

9. 发明申请

US20150178910A1 METHOD AND SYSTEM FOR CALIBRATING LASER MEASURING APPARATUS 有权
标题翻译：用于校准激光测量装置的方法和系统
公开(公告)号：US20150178910A1
公开(公告)日：2015-06-25
申请号：US14451451
申请日：2014-08-05
申请人： National Taiwan University of Science and Technology
发明人： Tzung-Han Lin
IPC分类号： G06T7/00 , G01B11/02 , G06T3/00
CPC分类号： G06T3/0006 , G01B11/2504 , G06T3/00 , G06T7/521 , G06T7/80 , G06T2207/30204
摘要： A method for calibrating a laser measuring apparatus having a laser illumination unit and an image capturing unit includes the following steps. A calibration board having at least one slit gap and a plurality of markers is provided. The relative position between the calibration board and the laser illumination unit is adjusted to allow a slit laser beam emitted by the laser illumination unit to pass through the at least one slit. The calibration board is captured by the image capturing unit to generate a calibration board image. The calibration board image is processed so as to obtain a camera coordinate of each of the markers. A plurality of calibration parameters are calculated according to the camera coordinate and an actual coordinate of each of the markers so as to obtain actual coordinates of an object captured in an object image generated by the laser measuring apparatus.
摘要翻译：一种用于校准具有激光照射单元和图像捕获单元的激光测量装置的方法包括以下步骤。提供了具有至少一个狭缝间隙和多个标记的校准板。校准板和激光照射单元之间的相对位置被调整以允许由激光照射单元发射的狭缝激光束通过至少一个狭缝。校准板由图像捕获单元捕获以产生校准板图像。处理校准板图像以获得每个标记的相机坐标。根据相机坐标和每个标记的实际坐标来计算多个校准参数，以便获得由激光测量装置产生的对象图像中拍摄的物体的实际坐标。

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