scholarly journals Estimación de la postura corporal en un sistema embebido Raspberry Pi empleando técnicas de visión artificial

2021 ◽  
Vol 2 (1) ◽  
pp. 9-20
Author(s):  
Carlos Luis Vargas Guevara ◽  
David Omar Guevara Aulestia ◽  
Marco A Ciaccia ◽  
Thalia San Antonio
Keyword(s):  

Los sistemas que se emplean para la captura de movimiento o conocidos como análisis de marcha, generalmente emplean dispositivos dedicados que en el mercado se comercializan a elevados precios. En los últimos años, las empresas enfocadas en la fabricación e implementación de laboratorios de marcha han centrado sus esfuerzos en crear dispositivos de medición y emisión de reportes que sean portables y ocupen un mínimo de espacio; sin embargo, las innovaciones tecnológicas planteadas por empresas dedicadas al campo de la biomedicina resultan ser cerradas y con limitaciones de compatibilidad. Es decir, que en casos en los que se requiera la expansión del laboratorio, resulta necesario la adquisición de equipos de la misma marca, lo que implica costos elevados. Ante esta problemática, se plantea el uso de sistemas embebidos Raspberry Pi, que, a través de técnicas y librerías de visión artificial, establecen un análisis de marcha con precisión y mayores prestaciones al ser un sistema de código abierto. Asimismo, a través de técnicas de visión artificial se pueda capturar y procesar una imagen binarizada. El empleo de librearías OpenCV para ubicar marcadores y delimitar una región de interés consolidan un sistema compacto y portable para capturar el movimiento corporal en tiempo real, y en espacios no restringidos.

2015 ◽  
Vol 1 (1) ◽  
pp. 37-45
Author(s):  
Irwansyah Irwansyah ◽  
Hendra Kusumah ◽  
Muhammad Syarif

Along with the times, recently there have been found tool to facilitate human’s work. Electronics is one of technology to facilitate human’s work. One of human desire is being safe, so that people think to make a tool which can monitor the surrounding condition without being monitored with people’s own eyes. Public awareness of the underground water channels currently felt still very little so frequent floods. To avoid the flood disaster monitoring needs to be done to underground water channels.This tool is controlled via a web browser. for the components used in this monitoring system is the Raspberry Pi technology where the system can take pictures in real time with the help of Logitech C170 webcam camera. web browser and Raspberry Pi make everyone can control the devices around with using smartphone, laptop, computer and ipad. This research is expected to be able to help the users in knowing the blockage on water flow and monitored around in realtime.


2019 ◽  
Vol 9 (01) ◽  
pp. 47-54
Author(s):  
Rabbai San Arif ◽  
Yuli Fitrisia ◽  
Agus Urip Ari Wibowo

Voice over Internet Protocol (VoIP) is a telecommunications technology that is able to pass the communication service in Internet Protocol networks so as to allow communicating between users in an IP network. However VoIP technology still has weakness in the Quality of Service (QoS). VOPI weaknesses is affected by the selection of the physical servers used. In this research, VoIP is configured on Linux operating system with Asterisk as VoIP application server and integrated on a Raspberry Pi by using wired and wireless network as the transmission medium. Because of depletion of IPv4 capacity that can be used on the network, it needs to be applied to VoIP system using the IPv6 network protocol with supports devices. The test results by using a wired transmission medium that has obtained are the average delay is 117.851 ms, jitter is 5.796 ms, packet loss is 0.38%, throughput is 962.861 kbps, 8.33% of CPU usage and 59.33% of memory usage. The analysis shows that the wired transmission media is better than the wireless transmission media and wireless-wired.


2020 ◽  
Vol 2020 (3) ◽  
pp. 277-1-277-8
Author(s):  
Michael Pilgermann ◽  
Thomas Bocklisch ◽  
Reiner Creutzburg

The aim of this paper is to describe the new concept of a Master level university course for computer science students to address the issues of IoT and Smart Home Security. This concept is well suited for professional training for interested customers and allows the creation of practical exercises. The modular structure of the course contains lectures and exercises on the following topics: 1. Introduction - IoT and Smart Home Technology and Impact 2. Homematic Technology and Smart Home Applications 3. Loxone Technology and Smart Home Applications 4. Raspberry Pi and Smart Home Applications 5. Security of IoT and Smart Home Systems and contains laboratory exercises of diverse complexities.


2020 ◽  
Vol 64 (3) ◽  
pp. 30401-1-30401-14 ◽  
Author(s):  
Chih-Hsien Hsia ◽  
Ting-Yu Lin ◽  
Jen-Shiun Chiang

Abstract In recent years, the preservation of handwritten historical documents and scripts archived by digitized images has been gradually emphasized. However, the selection of different thicknesses of the paper for printing or writing is likely to make the content of the back page seep into the front page. In order to solve this, a cost-efficient document image system is proposed. In this system, the authors use Adaptive Directional Lifting-Based Discrete Wavelet Transform to transform image data from spatial domain to frequency domain and perform on high and low frequencies, respectively. For low frequencies, the authors use local threshold to remove most background information. For high frequencies, they use modified Least Mean Square training algorithm to produce a unique weighted mask and perform convolution on original frequency, respectively. Afterward, Inverse Adaptive Directional Lifting-Based Discrete Wavelet Transform is performed to reconstruct the four subband images to a resulting image with original size. Finally, a global binarization method, Otsu’s method, is applied to transform a gray scale image to a binary image as the output result. The results show that the difference in operation time of this work between a personal computer (PC) and Raspberry Pi is little. Therefore, the proposed cost-efficient document image system which performed on Raspberry Pi embedded platform has the same performance and obtains the same results as those performed on a PC.


2019 ◽  
Vol 70 (3) ◽  
pp. 184-192
Author(s):  
Toan Dao Thanh ◽  
Vo Thien Linh

In this article, a system to detect driver drowsiness and distraction based on image sensing technique is created. With a camera used to observe the face of driver, the image processing system embedded in the Raspberry Pi 3 Kit will generate a warning sound when the driver shows drowsiness based on the eye-closed state or a yawn. To detect the closed eye state, we use the ratio of the distance between the eyelids and the ratio of the distance between the upper lip and the lower lip when yawning. A trained data set to extract 68 facial features and “frontal face detectors” in Dlib are utilized to determine the eyes and mouth positions needed to carry out identification. Experimental data from the tests of the system on Vietnamese volunteers in our University laboratory show that the system can detect at realtime the common driver states of “Normal”, “Close eyes”, “Yawn” or “Distraction”


2018 ◽  
Vol 6 (3) ◽  
pp. 241-245
Author(s):  
V. Mehta ◽  
◽  
B. Walia ◽  
V. Rathod ◽  
M. Kothari ◽  
...  
Keyword(s):  

2019 ◽  
Vol 7 (6) ◽  
pp. 14-18
Author(s):  
Sumangala Biradar ◽  
Beena Torgal ◽  
Namrata Hosamani ◽  
Renuka Bidarakundi ◽  
Shruti Mudhol

2018 ◽  
Vol 06 (03) ◽  
pp. 177-183
Author(s):  
P. Sabin Prasanna ◽  
B. Bernadine Infenta ◽  
S. Maria Keerthana ◽  
Sherril Sophie Maria Vincent
Keyword(s):  

Author(s):  
Kelven Marcel Delgado ◽  
Gabriel Henrique Cassel Barbosa ◽  
YURI GUBERT
Keyword(s):  

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