Three-dimensional Digital Technology Research Articles

Characterization and Quantitative Assessment of Shale Fracture Characteristics and Fracability Based on a Three-Dimensional Digital Core

At present, assessment techniques for the fracability of shale reservoirs, which rely on the formation of an effective fracture network, are scarce. Hence, in order to assess the fracability, it is critical to establish a quantitative correlation between the pattern of fracture distribution after fracture and fracability. The present investigation utilizes three-dimensional digital core technology and triaxial compression experiments to simulate the fracturing process in typical domestic shale reservoir cores. In addition to utilizing the maximum ball algorithm to extract fracture images, a number of other techniques are employed to compute the spatial quantitative parameters of the fractures, including least squares fitting, image tracking algorithms, and three-dimensional image topology algorithms. The introduction of the notion of three-dimensional fracture complexity serves to delineate the degree of successful fracture network formation subsequent to fracturing. A quantitative fracability characterization model is developed by integrating the constraints of fracture network formation potential and fragmentation potential. The results of this study show that the quantitative characterization of the characteristic parameters of cracks can be achieved by establishing a method for extracting crack information as well as parameters after core compression and completing the construction of a three-dimensional complexity characterization model. Meanwhile, the three-dimensional post-compression fracture image validation shows that the core fracturability index can better reflect the actual fracturing situation, which is in line with the microseismic monitoring results, and significantly improves the accuracy of fracturability characterization, which is an important guideline for the fracturing design of shale gas reservoirs.

Comparing the impact of three-dimensional digital visualization technology versus traditional microscopy on microsurgeons in microsurgery: a prospective self-controlled study.

Emerging three-dimensional digital visualization technology (DVT) provides more advantages than traditional microscopy in microsurgery; however, its impact on microsurgeons' visual and nervous systems and delicate microsurgery is still unclear, which hinders the wider implementation of DVT in digital visualization for microsurgery. Forty-two microsurgeons from the Zhongshan Ophthalmic Center were enrolled in this prospective self-controlled study. Each microsurgeon consecutively performed 30min conjunctival sutures using a three-dimensional digital display and a microscope, respectively. Visual function, autonomic nerve activity, and subjective symptoms were evaluated before and immediately after the operation. Visual functions, including accommodative lag, accommodative amplitude, near point of convergence and contrast sensitivity function (CSF), were measured by an expert optometrist. Heart rate variability was recorded by a wearable device for monitoring autonomic nervous activity. Subjective symptoms were evaluated by questionnaires. Microsurgical performance was assessed by the video-based Objective Structured Assessment of Technical Skill (OSATS) tool. Accommodative lag decreased from 0.63 (0.18) diopters (D) to 0.55 (0.16) D ( P =0.014), area under the log contrast sensitivity function increased from 1.49 (0.15) to 1.52 (0.14) ( P =0.037), and heart rate variability decreased from 36.00 (13.54) milliseconds (ms) to 32.26 (12.35) ms ( P =0.004) after using the DVT, but the changes showed no differences compared to traditional microscopy ( P >0.05). No statistical significance was observed for global OSATS scores between the two rounds of operations [mean difference, 0.05 (95% CI: -1.17 to 1.08) points; P =0.95]. Subjective symptoms were quite mild after using both techniques. The impact of DVT-based procedures on microsurgeons includes enhanced accommodation and sympathetic activity, but the changes and surgical performance are not significantly different from those of microscopy-based microsurgery. Our findings indicate that short-term use of DVT is reliable for microsurgery and the long-term effect of using DVT deserve more consideration.

Construction of medical aromatherapy experimental teaching resources based on digital three-dimensional technology

Abstract In this paper, on the basis of the Unity3D engine, image feature points are coarsely extracted, and a quadtree-based division algorithm is applied to filter the optimal FAST corner points. The fast 3D reconstruction technique is constructed through the construction method of nonlinear scale space similar to scale-invariant feature transform (SIFT), which is layer incremented according to the scale level logarithmic layer. The reconstructed 3D virtual teaching laboratory tool is obtained by importing the matched feature points into the model after the diffusion is completed. Finally, the teaching process and teacher-student behavioral data analysis were conducted for TCM and acupuncture students using the medical aromatherapy experimental course “Clinical Experiment of Aromatherapy for Primary Dysmenorrhea” as the teaching objective. The results showed that the maximum value of iFIAS of the experimental group was 100, and the mean value was 79.35, while the maximum value of technical iFIAS of the control group was only 51.32, and the mean value was 21.34, which was a significant difference between the two. It shows that the teaching method improves classroom learning interest and effect. The purpose of this paper is to provide relevant opinions and references for the future development direction of the combination of aromatherapy teaching and 3D virtual reality.

Three-Dimensional Digital Technology: A Powerful Assistant for the Reconstruction of Complex Craniofacial Deformities.

Three-dimensional digital technology has been widely applied in craniofacial surgeries, particularly in conventional procedures such as facial contouring and orthognathic surgery. To some extent, the process has already been standardized. As to reconstruction surgeries of complex craniofacial deformity, however, surgical plans need to be patient-specific. Traditionally, individualized surgical treatment largely relies on the surgeon's clinical experience. The application of digital technology mainly focuses on preoperative planning and postoperative evaluation of surgical outcomes rather than intraoperative patient-specific implants or osteotomy guides. For patients with complex craniofacial deformities, requirements for accurate 3-dimensional digital technology can be much higher. This study presents a favorable surgical reconstruction of the severe craniofacial deformity using 3-dimensional digital technology, providing references for craniofacial surgeons, which could be beneficial to clinical practice and treatment efficacy.

Retracted: Application of Artificial Intelligence Combined with Three-Dimensional Digital Technology in the Design of Complex Works of Art

Retracted: Application of Artificial Intelligence Combined with Three-Dimensional Digital Technology in the Design of Complex Works of Art

Volume calculation methods of irregular stone artifacts based on 3D laser scanning technology

ABSTRACT The rapid development of three-dimensional digital mapping and information technology have made the information recording and conservation of stone cultural relics more and more accurate and efficient, and their mapping methods have become more and more diverse. This study takes the rockery of the Humble Administrator’s Garden as an example to propose three volume measurement methods of massive, irregular, and immovable stone artifacts. These solutions are based on point cloud data obtained by a handheld 3D laser scanner and then different algorithms are used to calculate the volume.The three calculation principles are as follows: the voxel method, the encapsulation method, and the improved slicing method. Finally, the advantages, disadvantages and applicability scenarios of existing conventional volume measurement methods for rockeries are also compared with these three methods. The measurement methods used in this study has significant advantages over conventional means of calculating the volume of rockery. It is of great significance for the information acquisition, conservation, restoration, and revitalization inheritance of the rockery.

Design of the 3D Digital Reconstruction System of an Urban Landscape Spatial Pattern Based on the Internet of Things

Given the rapid development of modern science and technology, people are no longer satisfied with the planar composition and two-dimensional (2D) composition. Moreover, digitalization has entered the spatial layout of urban landscapes. The three-dimensional (3D) digital reconstruction technology can obtain the 3D effect map of urban garden landscapes, thereby improving the scientificity and timeliness of garden design. It is an important research direction in the field of computer vision. It transforms two or more planar graphics into visible 3D geometric graphics. It also restores their spatial coordinates and color information. The appearance of 3D digital reconstruction technology provides real-time and efficient information for landscape design, cost, and construction; improves the efficiency of landscape construction; and saves construction costs.

Retracted: Cloud Application in the Construction of English Virtual Teaching Resources Based on Digital Three-Dimensional Technology

Retracted: Cloud Application in the Construction of English Virtual Teaching Resources Based on Digital Three-Dimensional Technology

Application of 3 D digital technology in transmission line engineering and waste soil disposal mechanization construction

Under the background of the innovation in the field of construction engineering toward the direction of intelligence and digitalization, the three-dimensional digital design means with the digital information model as the core has gradually become the main content of the industry discussion in the new era. According to the cumulative experience of transmission line construction in recent years in our country, three-dimensional digital technology can simulate and arrange the construction link comprehensively during the construction of the project, and shorten the construction period and reduce the cost. Therefore, on the basis of understanding the current situation of transmission line engineering and the mechanized construction of residual soil disposal, this paper deeply discusses how to apply three-dimensional digital technology in the mechanized construction of transmission line engineering and residual soil disposal according to the research situation of three-dimensional digital technology at home and abroad. The final experimental results show that the 3D digital technology has a good application effect during the project construction, which is helpful to guide the high-quality development of power design industry in the new era.

Application of 3 D digital technology in transmission line engineering and waste soil disposal mechanization construction

Under the background of the innovation in the field of construction engineering toward the direction of intelligence and digitalization, the three-dimensional digital design means with the digital information model as the core has gradually become the main content of the industry discussion in the new era. According to the cumulative experience of transmission line construction in recent years in our country, three-dimensional digital technology can simulate and arrange the construction link comprehensively during the construction of the project, and shorten the construction period and reduce the cost. Therefore, on the basis of understanding the current situation of transmission line engineering and the mechanized construction of residual soil disposal, this paper deeply discusses how to apply three-dimensional digital technology in the mechanized construction of transmission line engineering and residual soil disposal according to the research situation of three-dimensional digital technology at home and abroad. The final experimental results show that the 3D digital technology has a good application effect during the project construction, which is helpful to guide the high-quality development of power design industry in the new era.

Cover Design of Public Service Advertisement Based on Deep Image Rendering Technology

With the development of digital multimedia technology, public service advertisement covers are mostly released in the form of animation, mainly in the form of two-dimensional and three-dimensional animations, disseminating artistic energy through artistic expression, and unknowingly imparting laws, rules and morals to the public, promoting national traditional culture, and establish a good social image through public service advertisements. With the rapid development of image processing technology and the continuous upgrading of display devices, people have begun to pursue more three-dimensional and immersive digital display technologies. According to the Criminisi algorithm, it mainly repairs the edge defects in the source image, and then updates the pixel confidence of the repaired image to start the next repair until the repair is completed. In order to make the public service advertisement cover design meet the needs of the market, the advertisement cover is designed through image drawing technology, the collected advertisement video is passed through Criminisi digital image restoration technology and its classification, and the improved Criminisi algorithm is explained to repair the advertisement image, and then the mean shift Clustering (Mean Shift Clustering) algorithm iteratively counts the processed images. The processing of the public service advertisement cover through the depth image rendering technology greatly reduces the repair rate without affecting the repair quality, restores the damaged image more accurately, and can reduce the video point rate. It can be increased to 0.87, saving 29% of the bit rate.

Using 3D Ray Tracing Technology to Study the Disturbance Effect of Rocket Plume on Ionosphere

In this paper, the initial neutral atmospheric parameters, background ionospheric parameters and geomagnetic field parameters of the ionosphere are obtained by NRLMSISE-00 model, IRI-2016 model and IGRF-13 model, respectively. Considering the neutral gas diffusion process, ion chemical reaction and plasma diffusion process, a three-dimensional dynamic model of chemical substances released by rocket plume disturbing the ionosphere is constructed. The influence of the disturbance on the echo path of high frequency radio waves with different incident frequencies is simulated by using three-dimensional digital ray-tracing technology. Using this model, the process of ionospheric disturbance caused by the main chemical substances H2 and H2O in the rocket plume under three different release conditions: fixed-point release at 300 km, vertical path at 250–350 km and parabolic path at 250–350 km, and the influence of the ionospheric cavity on the radio wave propagation of high frequency radio waves at different frequencies are simulated. The main purpose of the article is to focus on the effect of the cavity generated by the rocket exhaust on the propagation of radio waves. It mainly studies the perturbation effect on the ionosphere under different release conditions, considers the neutral gas diffusion process, ion chemical reaction and plasma diffusion process, and establishes the three-dimensional dynamics of the ionospheric electron density and the spatiotemporal distribution of the plume plasma learning model. Finally, the three-dimensional ray-tracing algorithm is used to simulate the propagation path of the radio wave through the disturbance area. We considered three different release conditions, including fixed-point release, vertical path and parabolic path. The ionospheric disturbances produced by these different releases are compared and analyzed, and their effects on the propagation path of radio waves are studied.

Research on key index evaluation of power transmission and transformation wiring based on three-dimensional intelligent evaluation

In order to better define the important indicators of power transmission and transformation lines and make their important indicators in the evaluation more accurate, so as to ensure the effectiveness of their evaluation. This paper introduces a three-dimensional intelligent evaluation technology to evaluate the main indexes of power transmission and transformation lines. Based on the transmission and transformation wiring, the data structure of transmission and transformation wiring is established by using three-dimensional digital technology. Based on the analysis of different 3D design results, the extraction of eigenvalues and key data is discussed, and a 3D intelligent evaluation system is established. On this basis, the main evaluation index system of transmission line is established. Using the fuzzy comprehensive evaluation method, the weight of the main indexes of transmission line is calculated, and the evaluation model of important indexes is established and evaluated. The experimental results show that this method is used to evaluate the main indexes of power transmission and transformation lines, and its weight is about 0.56, so that the weight of each index tends to be balanced. The contribution values of construction and progress of power transmission and transformation lines and quality control indexes of power transmission and transformation lines are 0.8 respectively. This shows that the main indexes of transmission lines are evaluated and good results are achieved.

Application of Artificial Intelligence Combined with Three-Dimensional Digital Technology in the Design of Complex Works of Art

Technological advancement is leaving its imprint on all domains and making works more accessible. They have also taken steps in the arts and crafts. Old arts and crafts can be given new life with digital technology. A combination of artificial intelligence and three-dimensional digital technology converts art images into three-dimensional image art by identifying the frequency of the image and storing the details in a database. This process is performed by transferring the image data through wireless sensor networks. The conversion of normal images into three-dimensional digital technology is achieved with the aid of sensors available in digital technology. This data will aid in the easy identification of the images. The Surface Wavefront Reconstruction on Fast Fourier Transform (SWRFFT) Method is implemented, evaluating the performance of a combination of AI and three-dimensional technology. This proposed method is compared with the existing system, and it is observed that the proposed SWRFFT method provides a 2.47% increased accuracy rate in the correlation of the image with the frequency generation.

Cloud Application in the Construction of English Virtual Teaching Resources Based on Digital Three-Dimensional Technology

In order to improve the sharing effect of English teaching resources, based on digital three-dimensional technology, this paper constructs a cloud application in English virtual teaching resource database system based on digital three-dimensional technology. Moreover, this paper uses signal recognition technology to digitally process English teaching resources and establish a dynamic and changeable three-tier indicator system. In addition, this paper collects and summarizes the state data generated in the teaching operation of various departments of teaching management in real time and conducts scientific analysis and processing on it according to the management objectives to obtain valuable data information. Finally, this paper digitally processes English teaching resources into system-recognizable text to realize platform resource sharing.

Application of Three-Dimensional Digital Technology in Orthodontics: The State of the Art.

Three-dimensional technologies are one of the most recent and relevant advancements in the field of Dentistry. These systems, including intraoral scans, 3D imaging exams (CAT scan, CBCT and MRI), CAD/CAM 3D printing devices and 3D computer software, have enabled clinicians to greatly improve patient care along with reducing treatment planning time. The present descriptive study aims to explore possible applications of 3D technologies during the diagnosis, treatment plan, case monitoring and result assessment in orthodontics. The overall upgrade provided by these technologies can improve the clinicians’ workflow and effectiveness by simplifying conventional techniques considered to be especially arduous.

Current trends in orthognathic surgery.

Orthognathic surgery has steadily evolved, gradually expanding its scope of application beyond its original purpose of simply correcting malocclusion and the facial profile. For instance, it is now used to treat obstructive sleep apnea and to achieve purely cosmetic outcomes. Recent developments in three-dimensional digital technology are being utilized throughout the entire process of orthognathic surgery, from establishing a surgical plan to printing the surgical splint. These processes have made it possible to perform more sophisticated surgery. The goal of this review article is to introduce current trends in the field of orthognathic surgery and controversies that are under active discussion. The role of a plastic surgeon is not limited to performing orthognathic surgery itself, but also encompasses deep involvement throughout the entire process, including the set-up of surgical occlusion and overall surgical planning. The authors summarize various aspects in the field of orthognathic surgery with the hope of providing helpful information both for plastic surgeons and orthodontists who are interested in orthognathic surgery.

Full Digital Surgery-First, Skeletal Anchorage and Aligners Approach to Correct a Gummy Smile and Class II Malocclusion with Mandibular Retrusion and Deviation

Background: The demand for interdisciplinary orthodontic treatment has increased significantly in the past few years, especially in adult patients. This kind of treatment requires careful clinical management, as consequence of the possible complications and limits related to adult age. However, the use of skeletal anchorage and three-dimensional (3D) digital technology has deeply revolutionised diagnostic planning and treatment strategies. Methods: A fully digital approach to the treatment of a Class II patient with a gummy smile and mandibular deficiency and deviation, consisting of initial surgery followed by the use of aligners and skeletal anchorage, is described. Results: The 3D, fully digital pre-evaluation enabled clinicians to accurately and reliably plan the surgical procedure and subsequent orthodontics, including the individualised positioning of stabilisation plates and a splint for maxillary and chin surgical movements. This allowed for the improvement of the patient’s facial aesthetics and dental occlusion without the use of visible orthodontic appliances or the occurrence of pre-surgical aesthetic worsening. Conclusions: This approach could be very effective for adult patients seeking aesthetic treatment options for facial and dental aesthetic improvement.

Development of fashion design applying to costume and Huangping batik of the Chinese minority Miao

The purpose of this study is twofold: First, to develop new sustainable design methods (aligned with ethnic elements and traditional culture) combined with three-dimensional digital clothing technology throughout the design process, which can be presented as guideline materials for various fashion designs to be developed in contemporary sensibilities. Second, it is the intention to produce creative fashion designs by incorporating the characteristics and methods of Miao’s Huangping batik dyeing technique and to present various possibilities in the fashion design field. The overall design characteristics sought by Miao minority are in line with the complex terrain and the ecological and climatic conditions. Miaoist batik dyeing (registered as part of Chinese national intangible cultural heritage) features unique production methods and patterns. The study results are as follows. First, this attempt has enabled understanding of the national costume culture as Chinese Miao’s traditional cultural heritage to be promoted, while the direction of contemporary design development using traditional elements has been presented. Second, the study demonstrated new and innovative expressions and styles relying on three-dimensional digital contouring technology and identified the possibility of developing various designs. Third, it was confirmed that the dyed batik pattern design created by the three-dimensional digital contouring technology could be recombined or expanded as digital printing to express the traditional ethnic designs in a practical manner utilizing digital printing techniques based on traditional characteristics.

Development of virtual upcycling fashion design based on 3-dimensional digital clothing technology

The purpose of this study is to develop up-cycling fashion design methods centered on discarded denim material for the study of original up-cycling design methods. Up-cycling fashion design work was developed using digital clothing technology. This is a recent hot topic among sustainable fashion design methods. Up-cycling fashion design expression methods (categorized as dismantlement, collages, depaysement, grafting, weaving, and tearing) were centered on design methods. These methods create various three-dimensional modeling effects in planar forms, whereby five pieces can be applied to the fabric and digitally produced. The results are as follows: First, the use of discarded denim fabric for the development of up-cycling fashion design pieces enabled the recycling of existing resources, provided solutions to environmental pollution problems, and provided expansion opportunities for design processes for sustainable fashion products that expand the design value of denim products and their utility. Second, new eco-friendly fashion designs that attempt to achieve diversity in modern fashion trends could be presented through formative contemporary fashion produced by up-cycling work products. Third, up-cycling fashion design work is expected to provide opportunities for eco-friendly fashion design methods. This will expand the value of sustainable fashion design by recycling simple waste materials through the use of three-dimensional digital clothing technology and further through the presentation of expanded life cycles that extend product planning, production, and life cycles.