• Title/Summary/Keyword: Fire image recognition

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Development of Droplet Sizing Technique in Spay Flow (분무유동에서 입경 계측기법의 개발)

  • Yang, Chang-Jo
    • Journal of Advanced Marine Engineering and Technology
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    • v.31 no.1
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    • pp.67-73
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    • 2007
  • Recently, fire extinguishing systems based on water mists have been attracting public attentions in marine engineering. Performance of fire extinguishing systems is very strongly influenced by the size and distribution of spayed water mists. Therefore, the present study has developed droplet analyzing method based on image processing. The morphological technique based on partial curvature information of pre-processed images with relaxation method was adopted for recognition and separation of overlapped particles. Tested results showed that the present method may be reliable for the analysis of the size and distribution of droplets in spray flow of fire extinguishing systems based water mists.

Occluded Object Motion Tracking Method based on Combination of 3D Reconstruction and Optical Flow Estimation (3차원 재구성과 추정된 옵티컬 플로우 기반 가려진 객체 움직임 추적방법)

  • Park, Jun-Heong;Park, Seung-Min;Sim, Kwee-Bo
    • Journal of the Korean Institute of Intelligent Systems
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    • v.21 no.5
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    • pp.537-542
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    • 2011
  • A mirror neuron is a neuron fires both when an animal acts and when the animal observes the same action performed by another. We propose a method of 3D reconstruction for occluded object motion tracking like Mirror Neuron System to fire in hidden condition. For modeling system that intention recognition through fire effect like Mirror Neuron System, we calculate depth information using stereo image from a stereo camera and reconstruct three dimension data. Movement direction of object is estimated by optical flow with three-dimensional image data created by three dimension reconstruction. For three dimension reconstruction that enables tracing occluded part, first, picture data was get by stereo camera. Result of optical flow is made be robust to noise by the kalman filter estimation algorithm. Image data is saved as history from reconstructed three dimension image through motion tracking of object. When whole or some part of object is disappeared form stereo camera by other objects, it is restored to bring image date form history of saved past image and track motion of object.

A Study on the Development of AI-Based Fire Fighting Facility Design Technology through Image Recognition (이미지 인식을 통한 AI 기반 소방 시설 설계 기술 개발에 관한 연구)

  • Gi-Tae Nam;Seo-Ki Jun;Doo-Chan Choi
    • Journal of the Society of Disaster Information
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    • v.18 no.4
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    • pp.883-890
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    • 2022
  • Purpose: Currently, in the case of domestic fire fighting facility design, it is difficult to secure highquality manpower due to low design costs and overheated competition between companies, so there is a limit to improving the fire safety performance of buildings. Accordingly, AI-based firefighting design solutions were studied to solve these problems and secure leading fire engineering technologies. Method: Through AutoCAD, which is widely used in existing fire fighting design, the procedures required for basic design and implementation design were processed, and AI technology was utilized through the YOLO v4 object recognition deep learning model. Result: Through the design process for fire fighting facilities, the facility was determined and the drawing design automation was carried out. In addition, by learning images of doors and pillars, artificial intelligence recognized the part and implemented the function of selecting boundary areas and installing piping and fire fighting facilities. Conclusion: Based on artificial intelligence technology, it was confirmed that human and material resources could be reduced when creating basic and implementation design drawings for building fire protection facilities, and technology was secured in artificial intelligence-based fire fighting design through prior technology development.

Effects of Preprocessing and Feature Extraction on CNN-based Fire Detection Performance (전처리와 특징 추출이 CNN기반 화재 탐지 성능에 미치는 효과)

  • Lee, JeongHwan;Kim, Byeong Man;Shin, Yoon Sik
    • Journal of Korea Society of Industrial Information Systems
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    • v.23 no.4
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    • pp.41-53
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    • 2018
  • Recently, the development of machine learning technology has led to the application of deep learning technology to existing image based application systems. In this context, some researches have been made to apply CNN (Convolutional Neural Network) to the field of fire detection. To verify the effects of existing preprocessing and feature extraction methods on fire detection when combined with CNN, in this paper, the recognition performance and learning time are evaluated by changing the VGG19 CNN structure while gradually increasing the convolution layer. In general, the accuracy is better when the image is not preprocessed. Also it's shown that the preprocessing method and the feature extraction method have many benefits in terms of learning speed.

A Study on Fire Recognition Algorithm Using Deep Learning Artificial Intelligence (딥러닝 인공지능 기법을 이용한 화재인식 알고리즘에 관한 연구)

  • Ryu, Jin-Kyu;Kwak, Dong-Kurl;Kim, Jae-Jung;Choi, Jung-Kyu
    • Proceedings of the KIPE Conference
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    • 2018.07a
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    • pp.275-277
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    • 2018
  • Recently, the importance of an early response has been emphasized due to the large fire. The most efficient method of extinguishing a large fire is early response to a small flame. To implement this solution, we propose a fire detection mechanism based on a deep learning artificial intelligence. In this study, a small amount of data sets is manipulated by an image augmentation technique using rotating, tilting, blurring, and distorting effects in order to increase the number of the data sets by 5 times, and we study the flame detection algorithm using faster R-CNN.

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Development of Separation Algorithm of Overlapped Particles in Spay Flow (분무 유동에서 중첩 인자 분리 알고리즘의 개발)

  • Yang, C.J.;Kim, J.H.;Cho, D.H.;Oh, J.H.;Lee, Y.H.
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2005.11a
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    • pp.118-119
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    • 2005
  • Recently, fire extinguishing systems based on water mists have been attracting public attentions in marine engineering. Performance of the fire extinguishing systems is influenced by the size and distribution of spayed water mists. Droplet analyzing method based on image processing technique for measuring droplet size and distribution has been developed. The morphological method based on partial curvature information of pre-processed images was adopted for recognition and separation of overlapped particles. Tested results show that the present method may be reliable for the analysis of the size and distribution of droplets produced by water mist spay flow.

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선박용 미분무 소화기노즐 수적 입자경 계측기법 개발

  • Kim, Tae-Hyeong;Kim, Jeong-Hwan;Yang, Chang-Jo;O, Jong-Hwan;Choe, Jang-Un
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2006.06a
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    • pp.307-308
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    • 2006
  • Recently, fire extinguishing systems based on water mists have been attracting public attentions in marine engineering. Performance of the fire extinguishing systems is influenced by the size and distribution of spayed water mists. Droplet analyzing method based on image processing technique for measuring droplet size and distribution has been developed. The morphological method based on partial curvature information of pre-processed images was adopted for recognition and separation of overlapped particles. Tested results show that the present method may be reliable for the analysis of the size and distribution of droplets produced by water mist spay flow.

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A Study on Flame Detection using Faster R-CNN and Image Augmentation Techniques (Faster R-CNN과 이미지 오그멘테이션 기법을 이용한 화염감지에 관한 연구)

  • Kim, Jae-Jung;Ryu, Jin-Kyu;Kwak, Dong-Kurl;Byun, Sun-Joon
    • Journal of IKEEE
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    • v.22 no.4
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    • pp.1079-1087
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    • 2018
  • Recently, computer vision field based deep learning artificial intelligence has become a hot topic among various image analysis boundaries. In this study, flames are detected in fire images using the Faster R-CNN algorithm, which is used to detect objects within the image, among various image recognition algorithms based on deep learning. In order to improve fire detection accuracy through a small amount of data sets in the learning process, we use image augmentation techniques, and learn image augmentation by dividing into 6 types and compare accuracy, precision and detection rate. As a result, the detection rate increases as the type of image augmentation increases. However, as with the general accuracy and detection rate of other object detection models, the false detection rate is also increased from 10% to 30%.

A Study of Automatic Recognition on Target and Flame Based Gradient Vector Field Using Infrared Image (적외선 영상을 이용한 Gradient Vector Field 기반의 표적 및 화염 자동인식 연구)

  • Kim, Chun-Ho;Lee, Ju-Young
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.49 no.1
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    • pp.63-73
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    • 2021
  • This paper presents a algorithm for automatic target recognition robust to the influence of the flame in order to track the target by EOTS(Electro-Optical Targeting System) equipped on UAV(Unmanned Aerial Vehicle) when there is aerial target or marine target with flame at the same time. The proposed method converts infrared images of targets and flames into a gradient vector field, and applies each gradient magnitude to a polynomial curve fitting technique to extract polynomial coefficients, and learns them in a shallow neural network model to automatically recognize targets and flames. The performance of the proposed technique was confirmed by utilizing the various infrared image database of the target and flame. Using this algorithm, it can be applied to areas where collision avoidance, forest fire detection, automatic detection and recognition of targets in the air and sea during automatic flight of unmanned aircraft.

Design and Implementation of Dangerous of Image Recognition based Cup Contamination Measurement System (이미지 인식 기반의 컵 오염 여부 측정 시스템의 설계 및 구현)

  • Lee, Taejun;Chae, Heeseok;Lee, Sangwon;Kim, Jaemin;Jung, Hoekyung
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2022.10a
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    • pp.213-215
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    • 2022
  • Recently, deep learning technology that processes images has been widely used in fire detection, autonomous driving, and defective product detection. In particular, in order to determine whether a product is contaminated or not, it can be identified through the contaminants passed from the existing sensor data, but technologies for recognizing cracks in products or contaminants themselves as images are being actively studied in various fields. In this paper, a system for classifying uncontaminated normal cups and contaminated cups through images was designed and implemented. The image was analyzed using an open image and a photographed image, and the image was analyzed by extracting the upper part of the cup image using Google Objectron for 3D object recognition. Through this study, it is thought that it will be used in various ways for research that can extract the contamination level of products required in the hygiene field based on images.

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