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Patent Agency Ranking
公开(公告)号：US20170171464A1
公开(公告)日：2017-06-15
申请号：US14985078
申请日：2015-12-30
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Wei-Cheng Liu , Yu-Chung Chen
CPC classification number: H04N5/23229 , G06K9/52 , G06T5/006 , G06T7/60 , G06T7/90 , H04N5/2254 , H04N5/23238 , H04N5/3572 , H04N5/772 , H04N9/79 , H04N17/002 , H04N2201/0001
Abstract: A wide-angle lens calibration system is provided, which may include a rotation unit, an image input unit, and a processing unit. A lens to be calibrated may be disposed on the rotation unit; the rotation direction of the rotation unit may be parallel to the horizontal direction; the optical axis center of the lens may be aligned with a reference object. The image input unit may receive images from the lens. The processing unit may control the rotation unit to rotate and analysis the images received from the lens. The processing unit may execute a distortion calibration process, wherein the processing unit may continuously rotate the rotation unit by a predetermined angle and then record the distance between the position of the reference object in the image and the optical axis center and a total rotation angle after each rotation so as to establish a distortion calibration model.
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公开(公告)号：US09756240B2
公开(公告)日：2017-09-05
申请号：US14985078
申请日：2015-12-30
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Wei-Cheng Liu , Yu-Chung Chen
CPC classification number: H04N5/23229 , G06K9/52 , G06T5/006 , G06T7/60 , G06T7/90 , H04N5/2254 , H04N5/23238 , H04N5/3572 , H04N5/772 , H04N9/79 , H04N17/002 , H04N2201/0001
Abstract: A wide-angle lens calibration system is provided, which may include a rotation unit, an image input unit, and a processing unit. A lens to be calibrated may be disposed on the rotation unit; the rotation direction of the rotation unit may be parallel to the horizontal direction; the optical axis center of the lens may be aligned with a reference object. The image input unit may receive images from the lens. The processing unit may control the rotation unit to rotate and analysis the images received from the lens. The processing unit may execute a distortion calibration process, wherein the processing unit may continuously rotate the rotation unit by a predetermined angle and then record the distance between the position of the reference object in the image and the optical axis center and a total rotation angle after each rotation so as to establish a distortion calibration model.
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公开(公告)号：US10282915B1
公开(公告)日：2019-05-07
申请号：US15857230
申请日：2017-12-28
Applicant: Industrial Technology Research Institute
Inventor： Jing-Jhih Lin , Wei-Cheng Liu , Yu-Chen Lin , Cheng-Hsien Wang , Peng-Cheng Chen
Abstract: A superimposition device of virtual guiding indication and reality image includes at least an image capturing device, a processor, a graphic processing unit (GPU), and a display device. The image capturing device captures reality image including instant scene. The processor receives the reality image and obtains height variation information. The GPU performs image correction processing on the reality image to obtain corrected image, generates updated transformation matrix according to the height variation information, and performs inverse perspective projection transformation by using the updated transformation matrix to generate bird's-eye view image of the corrected image and superimposes virtual guiding indication on the bird's-eye view image and performs perspective projection transformation on the bird's-eye view image to transform the bird's-eye view image into three-dimensional (3D) navigation image which includes the guiding indication. The display device displays the 3D navigation image which superimposes the virtual guiding indication into the reality image.
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4.发明授权公开(公告)号：US09319667B2
公开(公告)日：2016-04-19
申请号：US14065852
申请日：2013-10-29
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Yu-Chen Lin , Wei-Cheng Liu , Shao-Yuan Lee
CPC classification number: H04N17/002 , B60R1/00 , B60R2300/402 , G06T7/80
Abstract: An image conversion method is provided. An image of a calibration reference pattern is captured. A plurality of first and a plurality of second characteristic patterns of the calibration reference pattern are identified. Coordinates of the first and second characteristic patterns in a first view angle coordinate system are obtained, and coordinates of the first and second characteristic patterns in a second view angle coordinate system are obtained, to obtain a coordinate conversion relationship between the first and second view angle coordinate systems. An input image is converted to an output image according to the coordinate conversion relationship.
Abstract translation: 提供了一种图像转换方法。 捕获校准参考图案的图像。 识别校准参考图案的多个第一和多个第二特征图案。 获得第一和第二特征图案在第一视角坐标系中的坐标，并且获得第二视角坐标系中的第一和第二特征图案的坐标，以获得第一和第二视角坐标系之间的坐标转换关系 坐标系。 根据坐标转换关系将输入图像转换为输出图像。
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5.发明申请CALIBRATION REFERENCE PATTERN FOR VEHICLE CAMERA AND SETTING METHOD THEREOF, AND IMAGE CONVERSION METHOD AND DEVICE 有权用于车辆相机的校准参考图案及其设置方法，以及图像转换方法和装置公开(公告)号：US20140184814A1
公开(公告)日：2014-07-03
申请号：US14065852
申请日：2013-10-29
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor： Yu-Chen Lin , Wei-Cheng Liu , Shao-Yuan Lee
IPC: H04N17/00
CPC classification number: H04N17/002 , B60R1/00 , B60R2300/402 , G06T7/80
Abstract: An image conversion method is provided. An image of a calibration reference pattern is captured. A plurality of first and a plurality of second characteristic patterns of the calibration reference pattern are identified. Coordinates of the first and second characteristic patterns in a first view angle coordinate system are obtained, and coordinates of the first and second characteristic patterns in a second view angle coordinate system are obtained, to obtain a coordinate conversion relationship between the first and second view angle coordinate systems. An input image is converted to an output image according to the coordinate conversion relationship.
Abstract translation: 提供了一种图像转换方法。 捕获校准参考图案的图像。 识别校准参考图案的多个第一和多个第二特征图案。 获得第一和第二特征图案在第一视角坐标系中的坐标，并且获得第二视角坐标系中的第一和第二特征图案的坐标，以获得第一和第二视角坐标系之间的坐标转换关系 坐标系。 根据坐标转换关系将输入图像转换为输出图像。
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