scholarly journals Sector Rasterization Method for Images on a Video Device With Mechanical Scanning

2020 ◽  
pp. 182-193
Author(s):  
Yelizaveta Meleshko ◽  
◽  
Dmytro Bakin ◽  
Keyword(s):  
Video Transmission ◽  
Central Zone ◽  
Computing System ◽  
Linear Interpolation ◽  
Scanning System ◽  
Image Reproduction ◽  
Raster Image ◽  
Software Product ◽  
Mechanical Scanning ◽  
Embedded Computing System

The goal of this work was to create a method for sectoral rasterization for images on video devices with mechanical scanning that can be used for advertising purposes. Preparing an image for display on a machine with a mechanical sector scan requires the creation of software for transferring a classic rectangular raster to a sector raster. When implementing software for an embedded computing system of mechanical image scanning for advertising purposes, the task was to reproduce a raster image using concentrically located circles, which are divided into sectors. The ambiguity of the transition from a square to a sectorial raster lies in the variable area of the sectors as they move away from the center of the image. According to this fact, there are several sectors for each of the pixels near the central zone of the image, and several pixels for one sector to the periphery of the image. There is not possible to increase the resolution of a sector image due to hardware limitations, so a new method of sector rasterization for an image on a mechanically scanned video device was developed. The developed method combines algorithms that make it possible to transform a raster image into a sectorial raster using linear interpolation depending on the distance of the sector from the center of the image. Attention was also paid to assessing the time of the next complete revolution when starting the mechanical scanning system, which made it possible to reduce the time for obtaining a stable image from the moment the device was turned on. So, as the result of the research, the method of sectorial image rasterization was developed, as well as the algorithms that allow converting a raster image into a sectorial image were developed. Вased on the developed algorithms, the software product for an embedded image reproduction system and the software product for real-time video transmission over Wi-Fi communication with the conversion of a rectangular raster into a sector raster were created. By combining algorithms for converting a square raster to a sector one, the quality of image reproduction on a mechanically scanned video device was improved.

TigerSwitch: a case study in embedded computing system design

2002 ◽  
Author(s):  
M. Wolf ◽  
A. Wolfe ◽  
S. Chinatti ◽  
R. Koshy ◽  
G. Slater ◽  
...  
Keyword(s):  
System Design ◽  
Computing System ◽  
Embedded Computing ◽  
Embedded Computing System

Rapid Embedded Programming in the Mathworks Environment

2002 ◽  
Vol 2 (3) ◽  
pp. 237-241 ◽  
Author(s):  
Daniel Burns and ◽  
Thomas G. Sugar
Keyword(s):  
Code Generation ◽  
Engineering Students ◽  
Force Feedback ◽  
Controller Design ◽  
Computing System ◽  
Embedded Computing ◽  
Loop Control ◽  
Loop Control System ◽  
Embedded Computing System ◽  
Automatic Code

New, commercially available, automatic, code-generation tools are used in teaching and lab exercises to progress from controller design, to simulation, and finally to implementation on mechanical hardware. An embedded computing system consists of a dedicated, digital, electronic-processor that controls a system that interacts with the environment. Case studies highlighting a force-feedback joystick and motor servo control with encoder feedback are presented to illustrate laboratory exercises that teach mechanical engineering students hardware-in-the-loop control system design. Using these software tools, design iterations and multiple controllers are quickly simulated and downloaded to the actual hardware.

scholarly journals Accurate Calibration of a Self-Developed Vehicle-Borne LiDAR Scanning System

2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Ming Guo ◽  
Bingnan Yan ◽  
Tengfei Zhou ◽  
Deng Pan ◽  
Guoli Wang
Keyword(s):  
Point Cloud ◽  
Laser Scanner ◽  
Measurement Data ◽  
Point Clouds ◽  
Calibration Method ◽  
Linear Interpolation ◽  
Measurement Unit ◽  
Scanning System ◽  
High Precision Measurement ◽  
Distance Ratio

To obtain high-precision measurement data using vehicle-borne light detection and ranging (LiDAR) scanning (VLS) systems, calibration is necessary before a data acquisition mission. Thus, a novel calibration method based on a homemade target ball is proposed to estimate the system mounting parameters, which refer to the rotational and translational offsets between the LiDAR sensor and inertial measurement unit (IMU) orientation and position. Firstly, the spherical point cloud is fitted into a sphere to extract the coordinates of the centre, and each scan line on the sphere is fitted into a section of the sphere to calculate the distance ratio from the centre to the nearest two sections, and the attitude and trajectory parameters of the centre are calculated by linear interpolation. Then, the real coordinates of the centre of the sphere are calculated by measuring the coordinates of the reflector directly above the target ball with the total station. Finally, three rotation parameters and three translation parameters are calculated by two least-squares adjustments. Comparisons of the point cloud before and after calibration and the calibrated point clouds with the point cloud obtained by the terrestrial laser scanner show that the accuracy significantly improved after calibration. The experiment indicates that the calibration method based on the homemade target ball can effectively improve the accuracy of the point cloud, which can promote VLS development and applications.

scholarly journals Active IR location as the roadway profilometry method

2021 ◽  
Vol 2140 (1) ◽  
pp. 012032
Author(s):  
V L Khmelev ◽  
A F Fominykh
Keyword(s):  
Depth Map ◽  
Minimum Size ◽  
Scanning System ◽  
Distance Measurements ◽  
Ir Radiation ◽  
Multiple Sample ◽  
Statistical Studies ◽  
Mechanical Scanning ◽  
Classical Computer ◽  
Surface Quality Control

Abstract This article observe a using of active infrared beam location as roadway surface quality control. Changes in the spatial structure of the emitted IR radiation by surfaces within the capture scene allow creating a depth map of this scene. An optical camera makes it possible to use classical computer vision methods for stitching a depth map. For testing the possibility of using this approach, we made statistical studies on a multiple sample of distance measurements. Here we explain two experimental schemes with a programmable mechanical scanning system. The first one, we had determined the distance, which the image is capture accurately. The second, we measure the planar resolution, a minimum size of the defect that recognize by the infrared beam location system.

scholarly journals Structure of the Decision Support System in the Development of Software Products

2021 ◽  
Vol 3 (4) ◽  
pp. 258-269
Author(s):  
Milena Shitova ◽  
Sergey Ovanesyan
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Expert Knowledge ◽  
Computing System ◽  
Point Of View ◽  
Artificial Intelligence System ◽  
Intelligence System ◽  
Software Products ◽  
Software Product

This study examined the problems of calculating the time to create a software product using the example of the company "RKIT" LLC. The article discussed the analysis of the most effective, from the point of view of the authors, methods for assessing the complexity of projects. As a result of the review, the authors suggested to create a decision support system. This system will consist of two blocks: an automated information computing system based on the PERT method and an artificial intelligence system in the form of an expert system, which is a repository of expert knowledge. The creation of a DSS will reduce the time for experts to make decisions and reduce the likelihood of a decrease in the profitability of the project, which will lead to an increase in the company's profit.

Sign in / Sign up

Export Citation Format

Share Document