公开(公告)号：US20140368638A1

公开(公告)日：2014-12-18

申请号：US14307658

申请日：2014-06-18

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： FRANCO LIN ,  WEN-YI CHANG ,  LUNG-CHENG LEE ,  HUNG-TA HSIAO ,  WHEY-FONE TSAI ,  TAI-SHAN LIAO ,  SHUN-CHUNG TSUNG ,  JIHN-SUNG LAI ,  CHIN-HSIUNG LOH ,  SHIH-CHUNG KANG ,  YAO-YU YANG

IPC: G01B13/00 ,  H04N7/18

CPC classification number: G01F1/002 ,  G01F1/7086 ,  G01P5/22

Abstract: The present invention provides a method of mobile image identification for flow velocity and the apparatus thereof. The present invention integrates laser-light module and mobile photographing devices such as smartphones, cameras, or tablet computers. After multiple laser spots are projected on the surface of flowing water, water-surface images including the laser spots are photographed continuously. Then the software program of image identification in the mobile photographing device performs calculations and coordinate conversion. According to the difference between multiple water-surface images taken continuously, the flow-velocity information of the water surface is given.

Abstract translation: 本发明提供了一种用于流速的移动图像识别方法及其装置。 本发明集成了激光光模块和智能手机，相机或平板计算机等移动摄像装置。 在流水表面投射多个激光点后，连续拍摄包括激光斑点在内的水面图像。 然后，移动摄影装置中的图像识别软件程序执行计算和坐标转换。 根据连续拍摄的多个水面图像之间的差异，给出了水面的流速信息。

公开(公告)号：US20210172722A1

公开(公告)日：2021-06-10

申请号：US16920287

申请日：2020-07-02

Applicant: National Applied Research Laboratories

Inventor： YI-CHENG LIU ,  CHUN-JEN WENG ,  TAI-SHAN LIAO ,  GUO-HAO LU

IPC: G01B9/02 ,  G02B27/10 ,  G02B5/08 ,  G02B1/11

Abstract: The present invention provides a reflective condensing interferometer for focusing on a preset focus. The reflective condensing interferometer includes a concave mirror set, a convex mirror, a light splitting element, and a reflecting element. The concave mirror set has first and second concave surface portions which are oppositely located on two sides of a central axis passing through the preset focus and are concave on a surface facing the central axis and the preset focus. Light is preset to be incident in parallel to the central axis in use. The convex mirror is disposed between the concave mirror set and the preset focus on the central axis, and is convex away from the preset focus. The light splitting element vertically intersects with the central axis between the convex mirror and the preset focus. The reflecting element is disposed between the light splitting element and the convex mirror.

公开(公告)号：US20140132965A1

公开(公告)日：2014-05-15

申请号：US13799095

申请日：2013-03-13

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： WEN-YI CHANG ,  FRANCO LIN ,  LUNG-CHENG LEE ,  HUNG-TA HSIAO ,  SHOU-I CHEN ,  YU-CHI SUNG ,  TAI-SHAN LIAO ,  CHIH-YEN CHEN

IPC: G01B11/02

CPC classification number: G01B11/02

Abstract: The present invention relates to a method for measuring cracks remotely and the device thereof. First, multiple laser spots with known a shape are projected onto a remote wall and beside a crack. Then, by using geometric calculations, the relative coordinates of the laser spots on the wail and the real distance can be given and used as the reference length of the crack. Next, a camera is used for taking a picture of the remote crack along with the laser spots; the image identification technology is used for calculating the relevant parameters of the crack. Thereby, to acquire the parameters of the crack, a user needs not to be present at the site for measuring at a short distance or placing a reference object, and thus providing safety and convenience.

Abstract translation: 本发明涉及一种远程测量裂缝的方法及其装置。 首先，将具有已知形状的多个激光点投影到远程壁上并在裂纹旁边。 然后，通过使用几何计算，可以给出激光点在距离上的相对坐标和实际距离，并用作裂纹的参考长度。 接下来，使用相机与激光点一起拍摄远程裂纹的图片; 图像识别技术用于计算裂纹的相关参数。 因此，为了获取裂纹的参数，用户不需要在现场进行短距离测量或放置参考对象，从而提供安全和方便。

公开(公告)号：US20210096256A1

公开(公告)日：2021-04-01

申请号：US16830538

申请日：2020-03-26

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： TAI-SHAN LIAO ,  LONG-JENG LEE ,  SHIH-JIE CHOU ,  CHUN-JEN WENG

IPC: G01S17/89 ,  G02B27/10 ,  G02B27/14

Abstract: An integrated device includes a laser ranging module, a dual-branched fiber bundle, a beam splitter, and an image receiving module. The laser ranging module includes a light source, an optical receiver and a computing unit. The fiber bundle is disposed between the laser ranging module and the beam splitter. A target reflects a measuring beam emitted by the light source to form a reflected beam. The beam splitter splits the reflected beam into a first reflected beam and a second reflected beam. The first reflected beam is transmitted to the optical receiver through the fiber bundle to generate a measurement signal. The computing unit receives the measurement signal to calculate a distance between the target and the fiber bundle. The image receiving module is disposed on the optical path of the second reflected beam to receive the second reflected beam and displays the image of the target.

公开(公告)号：US20150093043A1

公开(公告)日：2015-04-02

申请号：US14044041

申请日：2013-10-02

Applicant: National Applied Research Laboratories

Inventor： CHI-HUNG HUANG ,  WEI-CHUNG WANG ,  YUNG-HSIANG CHEN ,  TZI-HUNG CHUNG ,  TAI-SHAN LIAO

IPC: G06F17/15 ,  G06T7/00

CPC classification number: G06F17/156 ,  G06T7/00 ,  G06T7/0002 ,  G06T2207/20048 ,  G06T2207/20056 ,  G06T2207/30168

Abstract: An image correlation for images having speckle pattern is evaluated. Modulation transfer function (MTF) curves of speckle-pattern images captured at different times are figured out. Whether a correlation value between the MTF curves meets a threshold is checked. If the correlation value is smaller than the threshold, speckle-pattern images are re-selected for re-figuring out the MTF curves and the correlation value. Thus, error of strain and displacement for digital image correlation owing to blurring images of the on-moving target object is figured out; calculation time of the digital image correlation is reduced; and accuracy on measuring physical parameters of the target object before and after movement is improved for digital image correlation.

Abstract translation: 评估具有斑纹图案的图像的图像相关性。 计算出在不同时间拍摄的斑纹图案的调制传递函数（MTF）曲线。 检查MTF曲线之间的相关值是否满足阈值。 如果相关值小于阈值，则重新选择斑点图案图像以重新计算MTF曲线和相关值。 因此，计算出由于移动目标物体的图像模糊而导致的数字图像相关的应变和位移误差; 数字图像相关的计算时间减少; 并且针对数字图像相关性提高了在移动之前和之后测量目标对象的物理参数的精度。