Three-dimensional measurement of small inner surface profiles using feature-based 3-D panoramic registration

Gong, Yuanzheng; Seibel, Eric J.

doi:10.1117/1.oe.56.1.014108

Cited by 27 publications

(9 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The specific operation idea of this method is as follows: first, extract the feature points of two adjacent images to be spliced separately, then match the extracted feature points, and finally, perform coordinate transformation on the matched feature point pairs to make two. The images are merged into one to achieve the purpose of image stitching 21,22 . The advantage is that the amount of calculation is small, the accuracy is high, the adaptability is good, and the matching effect is better; the disadvantage is that the feature point detection takes a long time.…”

Section: Research On Digital 3d Panoramic Visual Communication Techno...mentioning

confidence: 99%

Research and implementation of digital 3D panoramic visual communication technology based on virtual reality

Zhang

Kou

2021

Int J Communication

View full text Add to dashboard Cite

Summary Based on the digital three‐dimensional (3D) panoramic technology of sequence pictures, the static pictures are stitched together to form a 360‐degree panoramic image, which can truly reproduce the real scene. Panoramic images are widely used, making this technology a hot spot in the research of virtual reality technology. This paper completes the research content of the application value of the digital 3D panorama, the key technology of digital 3D panorama technology, and the design and display of 3D panorama campus through practical application. This article comprehensively introduces the hardware equipment of panoramic technology and the technical requirements of panoramic image acquisition in the field of practical application, and combines the actual cases to systematically produce panoramic image stitching, panoramic image generation, and virtual roaming campus construction; 3D panoramic technology is a brand‐new form of viewing images, discussing and studying the artistic expression of 3D panoramic images, and researching its innovative application in visual communication art. In this paper, the chromaticity calibration of digital camera and projection equipment is used to eliminate the coupling difference between the two; then estimate the spectral reflectance of the three‐color channel of the object and separate the specular reflection component and the diffuse reflection component, at the same time correct the color and specular reflectance of the object itself, and analyze the influence of reflection on the color of the projection light source. This article describes the design ideas and key technologies of the school's 3D panoramic walkthrough system, describes in detail the process of the system from demand analysis to system design and finally realization, and focuses on the production method of panoramic images and the main functional modules in the walkthrough system. At the end, the system was tested, and the existing problems were analyzed, and solutions were provided. Research shows that when the roaming system has 3,000 concurrent users, it can read a single scene for about 3 s on average.

show abstract

Section: Research On Digital 3d Panoramic Visual Communication Techno...mentioning

confidence: 99%

Research and implementation of digital 3D panoramic visual communication technology based on virtual reality

Zhang

Kou

2021

Int J Communication

View full text Add to dashboard Cite

show abstract

“…On the premise of not destroying the measured sample, the general three-dimensional profile measurement method is difficult to measure the internal three-dimensional profile due to the limitation of space. Non-contact three-dimensional inner contour detection methods can be roughly divided into ranging method [1][2][3][4] and visual method [5][6][7][8].Ranging method generally needs to combine highprecision multi-dimensional scanning mechanism for point/line scanning, and the detection system is complex and the measurable dynamic range is small. Ring beam method is one of the visual methods, which has simple structure, high efficiency and adjustable measurement dynamic range, and has high research and practical value.…”

Section: Introductionmentioning

confidence: 99%

Light Source Optimization of 3D Inner Contour Measurement System Based on Ring Beam Method

Shi²,

Bai³

et al. 2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Ring beam method is a simple and efficient method for measuring three-dimensional internal contour. The whole three-dimensional inner contour is stitched from the contour lines of cross-sectional images collected during scanning. The contour image with uniform and moderate light intensity and fine ring band is beneficial to the calculation of contour line extraction algorithm. In practice, due to the quality of the ring beam and the modulation effect of the sample surface microstructure, the light band of the contour image has local widening, overexposure and speckle phenomena, which directly affect the contour extraction effect. The ring beam generation system is optimized here, which makes the whole system have better size adaptability and convenient adjustment. In addition, experiments results show that the measurement repeatability of the cross-sectional profile obtained after the light source optimization has been effectively improved.

show abstract

“…Therefore, visual measurement technology has been progressing rapidly in recent years. With the advantages of modular design, low cost, non-contact, long stand-off, and high resolution, it has been successfully applied in 3D reconstruction [10,11], target detection [12], deformation analysis [13,14], etc. For long-travel measurement, a linear displacement measurement method based on image grayscale information was developed by mapping the grayscale values of each pixel on a periodic pattern [15].…”

Section: Introductionmentioning

confidence: 99%

A New Image Grating Sensor for Linear Displacement Measurement and Its Error Analysis

Fang

Zhou²,

Yu³

et al. 2022

Sensors

View full text Add to dashboard Cite

To improve the accuracy of the current vision-based linear displacement measurement in a large range, a new type of linear displacement sensing system, namely, image grating, is proposed in this paper. The proposed system included a patterned glass plate attached to the moving object and an ultra-low distortion lens for high-accuracy image matching. A DFT local up-sampling phase correlation method was adopted to obtain the sub-pixel translation of the patterns onto the target plate. Multiple sets of stripe patterns with different designs were located on the glass plate to expand the measurement range, based on the principle of phase correlation. In order to improve the measurement accuracy, the main errors of the image grating system were analyzed, and the nonlinear error compensation was completed based on the dynamic calibration of the pixel equivalent. The measurement results, after the error compensation, showed that the total error of the proposed system was less than 2.5 μm in the range of 60 mm, and the repeatability was within 0.16 μm, as quantified by standard deviation.

show abstract

Three-dimensional measurement of small inner surface profiles using feature-based 3-D panoramic registration

Cited by 27 publications

References 52 publications

Research and implementation of digital 3D panoramic visual communication technology based on virtual reality

Research and implementation of digital 3D panoramic visual communication technology based on virtual reality

Light Source Optimization of 3D Inner Contour Measurement System Based on Ring Beam Method

A New Image Grating Sensor for Linear Displacement Measurement and Its Error Analysis

Contact Info

Product

Resources

About