Gesture Recognition Development for the Interactive Datawall

The two visual systems hypothesis in neuroscience suggests that pointing without visual feedback may be less affected by spatial visual illusions than cognitive interactions such as judged target location. Our study examined predictions of this theory for target localization on a large-screen display. We contrasted pointing interactions under varying levels of visual feedback with location judgments of targets that were surrounded by an offset frame. As predicted by the theory, the frame led to systematic errors in verbal report of target location but not in pointing without visual feedback for some participants. We also found that pointing with visual feedback produced a similar level of error as location judgments, while temporally lagged visual feedback appeared to reduce these errors somewhat. This suggests that pointing without visual feedback may be a useful interaction technique in situations described by the two visual systems literature, especially with large-screen displays and immersive environments.

With the advent of increasing advances in visual display technology, MIL-STD-1472F, Design Criteria Standard for Human Engineering, was designated for an upgrade to capture how new technologies may have impacted its display standards. Large-Screen Displays (LSDs) were subject to review and, henceforth, the following study emerged. Six variables were chosen for inclusion in the present experiment: display type (monitor v. projector), ambient lighting (light v. dark), viewing distance (8 ft, 16 ft, 32 ft), viewing offset (0°, 25°), object type (letter, number, symbol), and object size (in terms of visual angle, i.e., 6 min, 8 min, 10 min). The variables chosen were expected to impact operator performance in terms of response time and accuracy based on stimulus legibility. The results did not support any reductions in current minimum text size, but new recommendations for preferred text size, symbol size, viewing distance, and viewing offset were established.

This paper describes the development of a generic framework for implementing realistic cross-platform haptic virtual reality applications. Currently, freely available Software Development Kits (SDKs) deal with a single Haptic Interaction Point (HIP), i.e. the tip of the haptic probe. However, many applications as path planning, virtual assembly, medical or dental simulations, as well as scientific exploration require object-object interactions, meaning any part of the complex 3D object attached to the probe collides with the other objects in the virtual scene. Collision detections and penetration depths between 3D objects must be quickly computed to generate forces to be displayed by the haptic device. In these circumstances, implementation of haptic applications is very challenging when the numbers, stiffness and/or complexity of objects in the scene are considerable, mainly because of high update rates needed to avoid instabilities of the system. The proposed framework meets this high requirement and provides a high-performance test bed for further research in algorithms for collision detection and generation of haptic forces.

Development of Wall Amusement with Large Screen Display

The Readers Project is an aesthetically oriented system of software entities designed to explore the culture of human reading. These entities, or “readers,” navigate texts according to specific reading strategies based upon linguistic feature analysis and real-time probability models harvested from search engines. As such, they function as autonomous text generators, writing machines that become visible within and beyond the typographic dimension of the texts on which they operate. Thus far the authors have deployed the system in a number of interactive art installations at which audience members can view the aggregate behavior of the readers on a large screen display and also subscribe, via mobile device, to individual reader outputs. As the structures on which these readers operate are culturally and aesthetically implicated, they shed critical light on a range of institutional practices - particularly those of reading and writing - and explore what it means to engage with the literary in digital media.

Design of a plasma flat panel large screen display for high volume manufacture

Aimed at in‐foldable and out‐foldable mobile phone terminal products on the market, a new 360 ° folding terminal scheme which integrates in & out‐foldable is proposed to realize three application modes: in‐fold portable, out‐fold mobile phone and large screen display. According to the application concept of product, the 360 degree hinge and flexible screen have been developed with U‐shaped out‐fold and water‐drop shaped in‐fold. Based on the finite element method, the mechanical simulation model of flexible screen is established, and the modeling method is programmed which is applied to practical engineering test. Based on Lagrange equation and multi‐body system dynamics theory, a system‐level simulation model of rigid‐flexible coupling of 360‐degree folding terminal is established to solve the complex kinematics and dynamic problems, and to achieve the optimal design of each functional module in the mechanism. Combined with the monomer bending test of the flexible screen, the simulation and test results show good consistency. The screen module pass 360 ° bending for 100000 times which verifies the correctness and universality of the scheme of 360 ° folding mechanism.

BackgroundDuring the COVID-19 outbreak in May 2021, our hospital—designated as a specialized facility for severely infected patients—faced critical staff and resource shortages. The urgent need for efficient bed management to ensure timely admissions underscored the inefficiencies of the manual, phone-based allocation process, which averaged 454 seconds per query. Traditional IT solutions were not feasible due to time and cost constraints.ObjectiveThis study aims to design and implement a rapid, zero-cost Quick Isolation Bed Inquiry System that provides real-time bed information and enables timely admissions without requiring additional workforce or expense.MethodsWe conducted a 3-cycle pre-post quality improvement study guided by the Toyota business practice (TBP), an 8-step problem-solving framework. After clarifying the problem and constructing a value stream map, we identified bottlenecks. A user-centered solution was developed by leveraging an underutilized data export function in the hospital’s bed inquiry platform. Using Microsoft Excel Visual Basic for Applications, we automated the filtering and display of relevant bed information. The primary outcomes were process time and number of steps; secondary outcomes included staff time savings and system accuracy.ResultsThe baseline manual process required 25 steps and 454 seconds to complete a query. The new system reduced this to 3 steps and 12 seconds, representing a 97.4% gain in efficiency. Single-click execution generated 3 outputs (administrative PDF, large-screen display, and mobile version) in 4 seconds, with distribution to the hospital LINE group completed in 7 seconds. Reliability reached 100%, with continuous availability through virtual private network access. Development and debugging were completed within 3 days using only existing resources. Postpandemic, the system was adapted for general ward management with minimal modifications.ConclusionsApplying TBP enabled the rapid development of a user-centered, zero-cost bed management tool by repurposing existing digital assets. The intervention markedly improved efficiency, reliability, and usability without additional staffing or expenditure, providing a scalable model for agile health care systems operating under resource constraints. Future work will focus on deeper automation, such as application programming interface–based real-time updates, and on evaluating downstream impacts on patient flow and bed turnover.

In order to improve the authenticity of human-computer interaction in the virtual scene, the data glove is used. Aimed at this sensor input device for the characteristic of multiple-joints, the collection and calibration method of original data are discussed. By analyzing the movement characteristics of human hand, mapping from human hand to virtual hand is accomplished. By embedding OSG in MFC, with the intersect vector method and map projection method, invoking the 3D ship engine room and interactive effect of people roaming in the scene are reached. And at last, by using the data glove, the interventional manipulation of virtual objects in the virtual scene is implemented.

Gaze prediction method refers to an algorithm model that predicts the user’s current gaze direction through various types of user information. However, current methods for predicting gaze in virtual scenes typically rely on generalized models and still have considerable room for improvement in specific interactive tasks. This paper focuses on improving gaze prediction for the interactive task flow of finding-locking onto-approaching target objects in virtual scenes. We first construct the first dataset for this task, consisting of gaze recordings, object, helmet and controller parameters, as well as recorded videos, during five interacting tasks performed by 21 users in three interactive scenes. The users’ interaction process is divided into three stages: finding target objects, locking onto target objects, and approaching target objects. We then conduct phase-wise correlation analysis, selecting the parameter set with the highest correlation with gaze to input into the network for training. The proposed method is validated on the self-constructed dataset, achieving a gaze prediction error of 2.60°, which represents a 21.45% improvement over the current SOTA method’s error of 3.31°, significantly enhancing gaze prediction accuracy for this task scenario.

Nowadays, the administration of medicines in the hospital has been a management platform which includes medicine purchase, supplements and payment. It is a fussy and complex scheduling during management so that there exist hidden troubles when human beings conduct the management. Since medicine management is much important to illness, there is no tolerance to make any errors. With large quantity of medicine as well as a wide range of prices, the efficiency of manual scheduling will be very low, which will lead to heavy workload to health workers. To solve this problem, a computer information network system for medicines management in hospital is crucial to improve the efficiency of management. This paper investigates the application of the computer information network system to hospital medicines management system, network data platform can now simple, easy to operate, and detailed classification and division of simple medicines management, standardize the level of hospital medicines management, and improve the work efficiency.

Superstable copper nanowire network electrodes by single-crystal graphene covering and their applications in flexible nanogenerator and light-emitting diode

Imaging modalities such as X-ray computerized tomography (CT), ultrasound CT, and nuclear magnetic resonance CT all produce sequences of slice images of internal structures of medical objects. Effective methods of displaying the 3D information in such images are essential to aid in both diagnosis and treatment of diseases. Two philosophically different approaches to the display problem have been pursued. In the first approach, 3D information is displayed as a distribution of densities in a 3D space. The second approach extracts, from slice images, information about boundary surfaces of objects which is displayed on a 2D screen. The present paper reviews both of these approaches with particular emphasis on the image and graphics processing aspects of the latter approach.

PurposeThe paper aims to present the processing pipeline of an assembly immersive simulation application which can manage the interaction between the virtual scene and user using stereoscopic display and haptic devices. A new set of elements are integrated in a Collaborative Virtual Environment (CVE) and validated using an approach based on subjective and objective users’ performance criteria. The developed application is intended for Assembly/Disassembly (A/D) analysis, planning and training.Design/methodology/approachA mobility module based on contact information is used to handle the assembly components’ movements through real-time management of collision detection and kinematically constraint guidance. Information on CVE architecture, modules and application configuration process are presented. Impact of device type (3 degrees of freedom (DoFs) vs 6 DoFs) over user’s experience is evaluated. Parameters (number of assembled components and components assembly time) are measured for each user and each haptic device, and results are compared and discussed.FindingsTest results proved the efficiency of using a mobility module based on predefined kinematic constraints for reducing the complexity of collision detection algorithms in real-time assembly haptic simulations. Also, experiments showed that, generally, users performed better with 3 DoFs haptic device compared to 6 DoFs haptic equipment.Originality/valueThe proposed immersive application automates the kinematical joints inference from 3D computer-aided design (CAD) assembly models and integrates it within a haptic-based virtual environment, for increasing the efficiency of A/D process simulations.

The ideal imagery as the resource of remote sensing for agriculture can be the field image that has high spatial resolution of the ground-based sensing with wide field of view of the satellitebased sensing. However, the spatial resolution and field of view are dominated by the height of the imaging sensor’s viewpoint: higher viewpoint allows the sensor to view wider area but with lower spatial resolution and lower viewpoint does vice versa. To overcome this trade-off problem, a ground-based field imaging system that produces multi-spectral 3D panoramic field image is developed in this research. The core of the imaging system is a stereo camera composed of two multi-spectral cameras. The stereo camera is mounted on the ground vehicle traveling within the field to acquire continuous field images. Each camera of stereovision has three CCDs with three different spectral filters being attached in front of them so that the field image consisted of total six spectral channels is synthesized together with the 3D information. Stereo image stream taken from the field are stitched together progressively to create single seamless field image. Field test was conducted at the soybean field to evaluate the 3D panoramic field imaging system. The assembled image showed that the 3D panoramic view of the soybean field was reconstructed well from the stereo image stream as the seams of constituent images were hardly seen over the whole panoramic image.