A5101895897- Optical measurement and interference techniques
- Advanced Measurement and Metrology Techniques
- Surface Roughness and Optical Measurements
- Advanced Vision and Imaging
- Advanced Measurement and Detection Methods
- Optical Systems and Laser Technology
- Advanced Optical Sensing Technologies
- Optical Coherence Tomography Applications
- Advanced Fiber Optic Sensors
- Industrial Vision Systems and Defect Detection
- Medical Image Segmentation Techniques
- Visual perception and processing mechanisms
- Force Microscopy Techniques and Applications
- Advanced Image and Video Retrieval Techniques
- Image and Video Stabilization
- Image Processing Techniques and Applications
- Advanced machining processes and optimization
- Iterative Learning Control Systems
- Image and Object Detection Techniques
- Photonic and Optical Devices
- Advanced Sensor Technologies Research
Shenyang Institute of Automation
2019-2024
Chinese Academy of Sciences
2019-2024
Fuzhou University
2024
University of Chinese Academy of Sciences
2023
Tianjin University
2015-2017
For online quality control of car engine production, pneumatic measurement instrument plays an unshakeable role in measuring diameters inside block because its portability and high-accuracy. To the limitation principle, however, working space between device measured surface is too small to require manual operation. This lowers efficiency becomes obstacle perform automatic measurement. In this article, a high-speed, system proposed take place devices by using laser-based unit. The unit...
The laser triangulation method is one of the most advanced methods for large inner diameter measurement. Our research group proposed a kind measuring device that principally composed three displacement sensors known to be fixed in same plane measurement position. It necessary calibrate direction beams are emitted by because they do not meet theoretical model accurately. For purpose calibrating beams, calibration and mathematical were proposed. equipped with spindle machine tool. rotate...
Unsupervised real-time stereo matching is of great research value in robot navigation due to its independence from ground truth and efficiency. The core challenge lies the design loss functions that can provide accurate guidance efficient network architectures. commonly used photometric prone incorrect because influence reflection, left-right color inconsistency, low texture, occlusion. As a weak supplement, smoothness ameliorate multi-solution problems caused by but it not effective for...
Inner dimensional measurement techniques are difficult to improve because of the tight working space and complex inside measuring environment. In this paper, a high-speed, in situ method is proposed for inner dimension by using revolved double laser beams. First, two beams with inclined angle 180° used construct line. The relative position between then calibrated before measurement. Second, consecutively get collections data samples during contain information concerning geometrical features...
The connecting rod is a critical part inside the marine engine. inspection of its important parameters directly related to assembly and quality A coordinate measuring machine (CMM) conventional choice measure rod. However, CMM requires significant resources in time cost, which leads researchers into in-situ measurement. This article presents fast method by using laser-based head. Two strategies are adopted process. For positional measurements (such as hole-center distance), whose accuracy...
Self-supervised stereo matching holds great promise for application and research due to its independence from expensive labeled data. However, direct self-supervised paradigms based on photometric loss functions have consistently struggled with performance issues the occlusion challenge. The crux of challenge lies in fact that positions occluded pixels align epipolar search direction defined by input images, leading persistent information erroneous feedback at fixed locations during...
Cylindricity is a crucial factor to estimate the manufacturing quality of large rotary parts. However, existing measurement systems can hardly deal with precise cylindricity challenges posed by dimension and great weight. In this paper, novel system along an improved error separation model efficient solution algorithm for parts proposed. Concretely, innovative research includes three Firstly, variable ranges Different from traditional workpiece rotation means, sensor data acquisition...
High accuracy automatic measurement of engine box is significant for enhancing the quality and performance engine. To complete fast shaft hole diameter, a new non-contact methods inner diameter measuring proposed in this paper, mathematic model built according to method. A probe based on laser displacement sensors developed meet method by distributing cross-section uniformly. By method, can be got with single measurement. This eliminates some defects involved existing methods, it does not...
Optical speckle is a major source of uncertainty in displacement measurement using oblique laser triangulation (OLT). Accurately modeling the statistics optical speckles crucial for determining optimal angle. Existing theories on with angle diversity overlook surface slope and grazing incidence, leading to results that are discrepant from reality. This paper presents more accurate model generated by quasi-monochromatic providing theoretical foundation optimizing OLT design. The incorporates...
Abstract In the process of metal surface defect detection, it is difficult to detect and segment small defects. order solve this problem, paper uses weighted object variance algorithm Then feature area extracted classification model based on support vector machine trained. verify effectiveness method, takes bearing cylindrical roller as specific research object. The experimental results show that method meets production requirements.