• Title/Summary/Keyword: infrared image

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Edge Preserving Smoothing in Infrared Image using Relativity of Guided Filter

  • Kim, Il-Ho
    • Journal of the Korea Society of Computer and Information
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    • v.23 no.12
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    • pp.27-33
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    • 2018
  • In this paper, we propose an efficient edge preserving smoothing filter for Infrared image that can reduce noise while preserving edge information. Infrared images suffer from low signal-to-noise ratio, low edge detail information and low contrast. So, detail enhancement and noise reduction play crucial roles in infrared image processing. We first apply a guided image filter as a local analysis. After the filtering process, we optimization globally using relativity of guided image filter. Our method outperforms the previous methods in removing the noise while preserving edge information and detail enhancement.

Facial Region Extraction in an Infrared Image (적외선 영상에서의 얼굴 영역 자동 추적)

  • Shin, S.W.;Kim, K.S.;Yoon, T.H.;Han, M.H.;Kim, I.Y.
    • Proceedings of the KIEE Conference
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    • pp.57-59
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    • 2005
  • In our study, the automatic tracking algorithm of a human face is proposed by utilizing the thermal properties and 2nd momented geometrical feature of an infrared image. First, the facial candidates are estimated by restricting the certain range of thermal values, and the spurious blobs cleaning algorithm is applied to track the refined facial region in an infrared image.

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Inspection of Calandria Reactor Area of Wolsung NPP using Thermal Infrared and CCD Images

  • Cho, Jai-Wan;Kim, Chang-Hoi;Seo, Yong-Chil;Park, Young-Soo;Kim, Seung-Ho
    • 제어로봇시스템학회:학술대회논문집
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    • pp.96.4-96
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    • 2002
  • Thermal infrared imaging is a highly promising technology for condition monitoring and predictive maintenance of electronic, electrical and mechanical elements in nuclear power plants. However, conventional low-cost infrared imaging systems suffer from poor spatial resolution compared to commercial CCD cameras. This paper describes an approach to enhance inspection performances for calandria reactor area of Wolsung nuclear power plant through the technique of superimposing thermal infrared image into real CCD image. In the occurrence of thermal abnormalities on observation points and areas of calandria reactor area, unusual hot image taken from thermal infrared camera is mapped upon re...

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Infrared Image Based Human Victim Recognition for a Search and Rescue Robot (수색 구조 로봇을 위한 적외선 영상 기반 인명 인식)

  • Park, Jungkil;Lee, Geunjae;Park, Jaebyung
    • Journal of Institute of Control, Robotics and Systems
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    • v.22 no.4
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    • pp.288-292
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    • 2016
  • In this paper, we propose an infrared image based human victim recognition method for a search and rescue robot in dark environments, like general disaster situations. For recognizing a human victim, an infrared camera on a RGB-D camera, Microsoft Kinect, is used. The contrast and brightness of the infrared image are first improved by histogram equalization, and the noise on the image is removed by morphological operation and Gaussian filtering. For recognizing a human victim, the binarization and blob labeling methods are applied to the improved image. Finally, for verifying the effectiveness and feasibility of the proposed method, an experiment for human victim recognition is carried out in a dark environment.

Implementation of Infrared Thermal Image Processing System for Disaster Monitoring (재난 감시를 위한 적외선 열화상 처리 시스템의 구현)

  • Kim, Won-Ho;Kim, Dong-Keun
    • Journal of the Institute of Convergence Signal Processing
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    • v.11 no.1
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    • pp.9-12
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    • 2010
  • This paper presents design and implementation of infrared thermal image processing system based on the digital media processor for disaster monitoring. The digital thermal image processing board is designed and implemented by using commercial chips such as DM642 processor and video encoder, video decoder. The implemented functions for disaster monitoring are to analyze temperature distribution of a monitoring infrared thermal image and to detect disaster situation such as fire. For the input of infrared thermal image processing system, an infrared camera of type of the $320\;{\times}\;240\;{\mu}$-bolometer is used. The required functions are confirmed with 10 frame/second of processing performance by testing of the prototype and Practicality of the system was verified.

Development of Infrared Thermal Image Target Simulator System (적외선 열상표적 모사장치 개발)

  • 김병문;심장섭;정순기
    • Journal of the Korea Society of Computer and Information
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    • v.9 no.1
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    • pp.63-70
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    • 2004
  • This paper describes modeling, design and performance test results of infrared thermal image target system which can generate infrared thermal image on aircraft. The system is designed to control image shape and intensity so that the infrared image shape and its emitting intensity are so similar to that of real aircraft. When applying the technique suggested in this paper, the system consumes only small electric power energy about 30(㎾) to generate infrared thermal image which is equivalent to that of real aircraft under full power operation. After verifying performance test, the system developed here has been used as a target for korean potable surface to air missile(KPSAM) at the stage of evaluation test such as target adaptive guidance test and auto-pilot logic test.

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Penile Infrared Thremal Image in Erectile Dysfunction Patient (발기부전(勃起不全) 환자(患者)의 음경(陰莖) 체열촬영 소견(所見))

  • Song, Bong-Keun;Jeong, In-Seok;Song, Un-Yong;Yang, Jae-Hoon;Lee, So-Young;Park, Seung-Won
    • The Journal of Internal Korean Medicine
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    • v.22 no.4
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    • pp.627-631
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    • 2001
  • Objective : Infrared thermal image is usually utilized for the diagnotic value of verious disease. We investigated the penile temperature of erectile dysfunction patient. Methods : We mesured the thermal difference of penile infrared thermal image in erectile dysfunction patient group and control group. Results : 1. Patient group's thermal degree is lower than Control group's in Kwanwon, Left scrotum, medial part of thigh. 2. The Kwanwon's temperature is especially showed lower than other mesured point's in erectile dysfunction patient group. Conclusion : According to the above results, it could be suggested that penile infrared image help us diagnostic value of erectile dysfunction patient.

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A Study on Heat Transfer Characteristics of Impinging Jet Using Infared Thermal Image Processing System (적외선열화상처리장치를 이용한 충돌제트의 전열특성에 관한 연구)

  • Kim, D.K.;Bae, S.T.;Kim, S.P.;Lee, Y.H.
    • Proceedings of the KSME Conference
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    • pp.711-716
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    • 2001
  • This paper presents an information about the heat transfer characteristics of impinging jet in eletronic equipment with infrared image processing unit. There have been many experimental investigations and theoretical studies on impinging jet because of application in a wide variety of industrial process including electronic equipment. In this study, we used infrared image processing unit to visualize heat transfer characteristics of impinging jet in electronic equipment. Infrared image processing unit is one of non-contact temperature measuring methods and it is possible to minimize flow resistance and this measurement is comparatively accurate. The main parameters are nozzle exit angle $(30^{\circ},\;45^{\circ},\;60^{\circ},\;75^{\circ},\;90^{\circ})$ and distance between nozzle and heat source is fixed 6d("d" is diameter of circular nozzle(10 mm). Reynolds number is 4500.

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A Study of Edge Detection for Auto Focus of Infrared Camera

  • Park, Hee-Duk
    • Journal of the Korea Society of Computer and Information
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    • v.23 no.1
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    • pp.25-32
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    • 2018
  • In this paper, we propose an edge detection algorithm for auto focus of infrared camera. We designed and implemented the edge detection of infrared image by using a spatial filter on FPGA. The infrared camera should be designed to minimize the image processing time and usage of hardware resource because these days surveillance systems should have the fast response and be low size, weight and power. we applied the $3{\times}3$ mask filter which has an advantage of minimizing the usage of memory and the propagation delay to process filtering. When we applied Laplacian filter to extract contour data from an image, not only edge components but also noise components of the image were extracted by the filter. These noise components make it difficult to determine the focus state. Also a bad pixel of infrared detector causes a problem in detecting the edge components. So we propose an adaptive edge detection filter that is a method to extract only edge components except noise components of an image by analyzing a variance of pixel data in $3{\times}3$ memory area. And we can detect the bad pixel and replace it with neighboring normal pixel value when we store a pixel in $3{\times}3$ memory area for filtering calculation. The experimental result proves that the proposed method is effective to implement the edge detection for auto focus in infrared camera.