Design of a Full-Space Tracking and Measurement System Based …
网页This innovation addresses the limitations of traditional light pens, particularly their restricted measurement range and reduced accuracy. Furthermore, the transformation matrix between the pixel and world coordinate systems is established by analyzing the relationship between the binocular vision sensor and the precision rotating platform.
What is a Light Pen? - GeeksforGeeks
网页2023年10月18日 · A light pen is a type of pointing input device that detects light and is frequently used to select or alter text or data on a screen. These devices, when used with a CRT (cathode ray tube) monitor, were an early method of …
Light pen whole space coordinate measuring system based on
网页Light pen coordinate measuring system (LPCMS) is a kind of portable coordinate measuring technique based on vision metrology. In classical LPCMS, the measuring range is limited to the camera’s field of view. To overcome this defect, a new LPCMS is designed in this paper to fulfil whole space coordinate measurement. The camera is installed on ...
Full space coordinate measurement method with a portable light pen …
网页In order to revolutionize the design of light pen, this paper proposes a full space coordinate measurement method with a portable light pen by using hybrid light field imaging. Firstly, a light field imaging system with depth estimation ability has been introduced to simplify the light pen structure to three target points by using P3P method.
Self-Calibration Method and Pose Domain Determination of a Light-Pen …
网页2022年1月28日 · The combined stylus tip center self-calibration method calculates the actual position of the light pen probe. The experimental results verify the effectiveness of the method; the measurement accuracy of the system …
Full space coordinate measurement method with portable light pen …
网页2021年10月21日 · A monocular-vision-based coordinate measuring system (MVB-CMS) obtains the 3D coordinates of the probe tip center of a light pen by analyzing the monocular image of the target points on the...
Light pen - C64-Wiki
网页A light pen is a pen-shaped input device which connects to a compatible computer (such as the C-64): The device contains a light sensor which, when pointed at a cathode ray tube screen, generates a signal each time the electron beam raster passes by the spot the pen is …
The light pen of a no guide 3D-coordinate measuring system
网页2006年11月6日 · Its measuring head is made in a pen shape with several light sources, which is called as the light pen. In this paper, the structure design and self-calibration of light pen system are analyzed, and the identifying way for multi-sources on light pen is present.
Stereo matching of light-spot image points in light pen in …
网页2014年2月1日 · One of the difficulties in light pen 3D vision measurement is the stereo matching of the light-spot image points. Therefore, the SoftPoist algorithm is adopted to determine the corresponding relations of the light-spot image point in the left and right images to the spatial light spots through double-layer circulation iterative optimization ...
Optimization design of light pen for use in space ... - ResearchGate
网页2003年12月1日 · The error of light pen system is less than 0.1 mm when the coordinate error of point source is ±0.1 mm. An original way of frequency-recognition that applies light source of different...