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汽车“视觉”技术的应用及展望
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作者 刘军民 《上海汽车》 2003年第5期38-39,共2页
随着汽车工业的快速发展,以及各种相关技术的日趋完善,汽车的性能也日益增强,日趋全面,不仅完全发挥了其基本的行走功能,而且在此基础上更向"视觉"功能迈进,从而把"视觉"技术引进汽车领域,从提供最基本的视觉信息开... 随着汽车工业的快速发展,以及各种相关技术的日趋完善,汽车的性能也日益增强,日趋全面,不仅完全发挥了其基本的行走功能,而且在此基础上更向"视觉"功能迈进,从而把"视觉"技术引进汽车领域,从提供最基本的视觉信息开始,向超越视觉,甚至代替视觉等更高更广的方向发展,使得汽车的安全性、舒适性和可靠性得到进一步的提高和完善. 展开更多
关键词 汽车 “视觉”技术 应用 照明技术 显示技术 控制技术 汽车玻璃 检测技术 安全性
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Application of Computer Vision Technology in Agriculture 被引量:6
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作者 黄喜梅 毕建杰 +3 位作者 张楠 丁筱玲 李飞 侯发东 《Agricultural Science & Technology》 CAS 2017年第11期2158-2162,共5页
With the development of image processing technology and computer, computer vision technology has been widely used in the production of agriculture,and has made many important achievements. This paper reviews its-resea... With the development of image processing technology and computer, computer vision technology has been widely used in the production of agriculture,and has made many important achievements. This paper reviews its-research progress on diagnosis of agricultural products, water diagnosis, weed identification,product quality testing and grading, agricultural picking and sorting and other as- pects, and finally put forward its existing problems and prospects for the future. 展开更多
关键词 Image processing Computer vision technology Agriculture production PROSPECT
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Weed Recognition Using Image-Processing Technique Based on Leaf Parameters 被引量:5
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作者 Kamal N. Agrawal Karan Singh +1 位作者 Ganesh C. Bora Dongqing Lin 《Journal of Agricultural Science and Technology(B)》 2012年第8期899-908,共10页
Weeds normally grow in patches and spatially distributed in field. Patch spraying to control weeds has advantages of chemical saving, reduced cost and environmental pollution. Advent of electro-optical sensing capabil... Weeds normally grow in patches and spatially distributed in field. Patch spraying to control weeds has advantages of chemical saving, reduced cost and environmental pollution. Advent of electro-optical sensing capabilities has paved the way of using machine vision technologies for patch spraying. Machine vision system has to acquire and process digital images to make control decisions. Proper identification and classification of objects present in image holds the key to make control decisions and use of any spraying operation performed. Recognition of objects in digital image may be affected by background, intensity, image resolution, orientation of the object and geometrical characteristics. A set of 16, including 11 shape and 5 texture-based parameters coupled with predictive discriminating analysis has been used to identify the weed leaves. Geometrical features were indexed successfully to eliminate the effect of object orientation. Linear discriminating analysis was found to be more effective in correct classification of weed leaves. The classification accuracy of 69% to 80% was observed. These features can be utilized for development of image based variable rate sprayer. 展开更多
关键词 Machine vision weed detection IMAGE-PROCESSING leaf parameters.
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New method for capturing arc of moving on switching apparatus 被引量:2
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作者 LIU Jiao-min WANG Jing-hong 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2007年第3期469-474,共6页
The switching arc that occurs in contact gap when contact of low voltage apparatus closes or breaks in electric circuit is harmful to the contacts, insulation, and reliability of electrical gear because of its very hi... The switching arc that occurs in contact gap when contact of low voltage apparatus closes or breaks in electric circuit is harmful to the contacts, insulation, and reliability of electrical gear because of its very high temperature. As arcing time is very short in switching gear, it is very difficult to observe arc phenomena directly for researchers. Therefore, visualization of switching arc is important for understanding arc phenomena, to analyze the arc features, and to improve the design and reliability of switching gear. Based on analyzing the visualization methods proposed by researchers, a new switching arc capturing approach is introduced in this paper. Arc image acquisition, and image processing techniques were studied. A switching arc image acquisition and visual simulation software based on high speed CCD camera hard ware system was designed and implemented to yield en- hanced arc image with good visual effect. 展开更多
关键词 Low voltage apparatus Switching arc Image acquisition Visual simulation
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A PERSONALIZED IMAGE RETRIEVAL BASED ON VISUAL PERCEPTION 被引量:1
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作者 Zhang Jing Shen Lansun David Dagan Feng 《Journal of Electronics(China)》 2008年第1期129-133,共5页
A new scheme named personalized image retrieval technique based on visual perception is proposed in this letter, whose motive is to narrow the semantic gap by directly perceiving user's visual information. It uses... A new scheme named personalized image retrieval technique based on visual perception is proposed in this letter, whose motive is to narrow the semantic gap by directly perceiving user's visual information. It uses visual attention model to segment image regions and eye-tracking technique to record fixations. Visual perception is obtained by analyzing the fixations in regions to measure gaze interests. Integrating visual perception into attention model is to detect the Regions Of Interest (ROIs), whose features are extracted and analyzed, then feedback interests to optimize the results and construct user profiles. 展开更多
关键词 Personalized image retrieval Visual perception Semantic gap Regions Of Interest (ROIs)
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Machine vision system for visual defect inspection of TFT-LCD 被引量:2
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作者 张昱 张健 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2007年第6期773-778,共6页
To improve the identification for visual defect of TFF-LCD, a new machine vision system is proposed, which is superior to human eye inspection. The system respectively employs a CCD camera to capture the image of TFT-... To improve the identification for visual defect of TFF-LCD, a new machine vision system is proposed, which is superior to human eye inspection. The system respectively employs a CCD camera to capture the image of TFT-LCD panel and an image processing system to identify potential visual defects. Image pre-processing, such as average filtering and geometric correction, was performed on the captured image, and then a candidate area of defect was segmented from the background. Feature information extracted from the area of interest entered a fuzzy rule-based classifier that simulated the defect inspection of TFT-LCD undertaken by experienced technicians. Experiment results show that the machine vision system can obtain fast, objective and accurate inspection compared with subjective and inaccurate human eye inspection. 展开更多
关键词 TFT-LCD machine vision image processing fuzzy rule-based classifier
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OBJECT-BASED SUPER RESOLUTION FOR INTELLIGENT VISUAL SURVEILLANCE VIDEO 被引量:1
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作者 Wang Suyu Shen Lansun 《Journal of Electronics(China)》 2008年第1期140-144,共5页
Construction of high resolution images from low resolution sequences is often im- portant in surveillance applications. In this letter, an affine based multi-scale block-matching image registration algorithm is first ... Construction of high resolution images from low resolution sequences is often im- portant in surveillance applications. In this letter, an affine based multi-scale block-matching image registration algorithm is first proposed. The images to be registered are divided into overlapped blocks of different size according to its motions. The Least Square (LS) image reg- istration algorithm is extended to match the blocks. Then an object based Super Resolution (SR) scheme is designed, the Maximum A Priori (MAP) super resolution algorithm is extended to enhance the resolution of the interest objects. Experimental results show that the proposed multi-scale registration method provides more accurate registration between frames. Further more, the object based super resolution scheme shows an enhanced performance compared with the traditional MAP method. 展开更多
关键词 Super Resolution (SR) reconstruction Visual surveillance Maximum A Priori (MAP) Affine model Image registration
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Quantifying of Paraplegic Patient Facial Agitation Based on Fuzzy k-NN
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作者 Muhammad Naufal Bin Mansor Azrini Binti Idris +2 位作者 Sazali Yaacob Ramachandran Nagaraj an Hariharan Muthusamy 《Computer Technology and Application》 2011年第1期24-28,共5页
A non-specific symptom of one or more physical, or psychological processes in which screaming, shouting, complaining, moaning, cursing, pacing, fidgeting or wandering pose risk or discomfort, become disruptive or unsa... A non-specific symptom of one or more physical, or psychological processes in which screaming, shouting, complaining, moaning, cursing, pacing, fidgeting or wandering pose risk or discomfort, become disruptive or unsafe or interfere with the delivery of care are called agitation. Individuals in agitation manifest their condition through "pain behavior", which includes facial expressions. Clinicians regard the patient's facial expression as a valid indicator for pain and pain intensity. Hence, correct interpretation of the facial agitation of the patient and its correlation with pain is a fundamental step in designing an automated pain assessment system. Computer vision techniques can be used to quantify agitation in sedated patients in Intensive Care Unit (ICU). In particular, such techniques can be used to develop objective agitation measurements from patient motion. In the case of paraplegic patients, whole body movement is not available, and hence, monitoring the whole body motion is not a viable solution. Hence in this case, the author measured head motion and facial grimacing for quantifying facial patient agitation in critical care based on Fuzzy k-NN. 展开更多
关键词 AGITATION fuzzy k-NN intensive care unit (ICU) paraplegic.
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Study of Web-based integration of pneumatic manipulator and its vision positioning
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作者 杨元兆 武传宇 胡旭东 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2005年第6期543-548,共6页
Pneumatic driven system is widely used in industrial automation, mainly for relatively simple tasks with open-loop control. Because of the pneumatic system’s compressibility and few stop positions, it was considered ... Pneumatic driven system is widely used in industrial automation, mainly for relatively simple tasks with open-loop control. Because of the pneumatic system’s compressibility and few stop positions, it was considered hard to control in a precise motion control system. With the help of newly developed pneumatic servo control technology, using servo-pneumatic positioning controller now is just as easy as using electro-servo system. This article discusses Web-based servo-pneumatic manipulator control and object recognition and positioning. The authors built a three-degrees-of-freedom (3 DOF) pneumatic manipulator with a servo-pneumatic closed-loop control system and machine vision system in their lab. Web-based tele-operation was a basic ability in this experimental system. After installing a CCD camera, video capture card, and related software developed by the authors, the robot could recognize the user specified object through the Web page and find its position. The remote user could command the robot to move to the position and to grab the object. The critical issues of Web-based control are to integrate hybrid open-architecture mechatronic system through the Web and develop a software language environment characterized by the script. The authors’ experiment showed that pneumatic devices could serve as accurate position control and be controlled through the Web. 展开更多
关键词 Servo-pneumatic control Pneumatic manipulator Vision positioning Web-based tele-operation
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Computer Vision Applied to Recognition Barcodes
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作者 Marcelo de Araujo Almeida Alvaro Manoel de Souza Soares 《Journal of Mechanics Engineering and Automation》 2013年第11期715-720,共6页
The bar code is one of the identification technologies used more successfully in the world. This technology was first developed as the second half of the twentieth century and quickly achieved acceptance in both indus... The bar code is one of the identification technologies used more successfully in the world. This technology was first developed as the second half of the twentieth century and quickly achieved acceptance in both industry and commerce. In this paper studies are discussed on the design, development and printing of one-dimensional barcodes of the symbologies Code 39 and Interleaved 2 of 5. There are also discussed techniques for recovering the information encoded in the bar code, which can be extended to other symbologies. The purpose of the paper is the development of an open solution with the objective to make the decoding of barcodes using computer vision techniques possible, which will be divided into four basic stages: acquisition, pre-processing, processing and presentation of results. Practical tests conducted with samples show satisfactory results, validating the operating principles of the elements involved. The proposed objective was achieved and practical tests validated the operating principles of the elements addressed by providing contribution to that segment decoding barcodes. 展开更多
关键词 Computer vision image processing bar codes Java language.
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Technology Makes it Happen -But it Doesn't Tell the Story by Itself
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作者 Constantin Trofin 《Journalism and Mass Communication》 2015年第8期405-414,共10页
Technology we used in order to tell visual stories is constantly improving, newer technology superseding the old one at a breathtaking rate. Yet, video technology is a means and does not do the storytelling itself. Ho... Technology we used in order to tell visual stories is constantly improving, newer technology superseding the old one at a breathtaking rate. Yet, video technology is a means and does not do the storytelling itself. However, visual storytellers must keep themselves updated with technology in order to get the best of their work. DSLR cameras are now leading the visual storytelling pack and some respected visual storytellers share conclusions of their experiences. 展开更多
关键词 visual storytelling DSLR camera HD video capture shoulder rig visual storytelling
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Application of computer technology in fruit science
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作者 Pang Xiaoming Wan Shuyuan Hu Chungen 《Hunan Agricultural Science & Technology Newsletter》 2003年第2期13-19,共7页
This paper summarized the application of computer technology in fruit science, including crop modelling, expert system, decision support system (DSS), computer vision (CV), the Internet, 3 “S”technology, etc. The ex... This paper summarized the application of computer technology in fruit science, including crop modelling, expert system, decision support system (DSS), computer vision (CV), the Internet, 3 “S”technology, etc. The existing problems and prospects are also discussed in the paper. 展开更多
关键词 computer technology fruit science precision farming
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Using Computer Vision and Intelligent Classification Techniques for the Classification and Selection of Brazilian Nuts
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作者 Raphael Gava de Andrade Valentin Oba Roda Jose Dalton Cruz Pessoa 《Journal of Food Science and Engineering》 2016年第2期51-62,共12页
Aiming to improve the processes involved in the industrial beneficiation of the Brazilian nuts, this work used a new methodology based on concepts of computer vision and intelligent classification, with a focus on two... Aiming to improve the processes involved in the industrial beneficiation of the Brazilian nuts, this work used a new methodology based on concepts of computer vision and intelligent classification, with a focus on two of the various stages of the processing: classification according to the origin and selection. Using the proposed methodology for the selection of the nuts it was possible to distinguish between intact and broken nuts and between good and spoiled nuts with a very high percentage of correct identifications. Also to evaluate the efficiency of the proposed methodology, visual tests by human subjects were performed for the classification of the nuts, the results demonstrated that the intelligent techniques performed the same or better than the visual classification. 展开更多
关键词 Brazilian nuts classification techniques computer vision intelligent systems.
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Method for Signals Detection in Single Crystal Diffraction Patterns through a Diffraction Pattern Indexing Software
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作者 Tania Paola Campos Frias Rafael Vazquez Perez Carlos Elias Omelas-Gutierrez 《Journal of Mechanics Engineering and Automation》 2015年第9期525-532,共8页
The correct use of information in science and technology is very important for its progress. Nowadays, the equipment used for the scientific and technological development provides results that are later interpreted by... The correct use of information in science and technology is very important for its progress. Nowadays, the equipment used for the scientific and technological development provides results that are later interpreted by the researchers, in most of the above mentioned equipment the results are images full of information which has to be analyzed. A powerful stage with multiple benefits in this field is the image pre-processing by means of intelligent systems, which are capable to do image analysis throwing very useful results that enhance the scientific and technological information. There are currently more than 500 functions in the computational vision specialized open source library OpenCV, which associated with the C++ programming language. These functions are used for application development in many areas of computer vision such as products inspection, medical images, safety, user's interfaces, camera calibration, stereoscopic vision and robotics. In this development and research work, by using the available functions and modifying the exposed methods, we present a proposal for signal detection in images originated in the transmission electron microscope (known as diffraction patterns), which are attached to the detailed analysis of crystalline structures used in the study of the materials science, the results show a profit of at least 18% in the detection of signs by means of the method proposed in this work. 展开更多
关键词 Diffraction pattern OPENCV DETECTION image pre-processing.
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Path Planning of Planar Kinked Line Seam by Visual Servoing for Robotic Welding
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作者 周律 林涛 陈善本 《Journal of Shanghai Jiaotong university(Science)》 EI 2007年第3期328-332,共5页
Welding path planning can substitute for the manual teaching process of the robot and can promote the autonomous level of the robotic welding. A path planning method by visual servoing was presented, in which the opti... Welding path planning can substitute for the manual teaching process of the robot and can promote the autonomous level of the robotic welding. A path planning method by visual servoing was presented, in which the optimal angle of charge-coupled device (CCD) camera was also planned. Aiming at planning two forms of kinked line seams, obtuse angle seam and right angle seam, a practicable solution was put forward. In this solution, the intersection of two adjacent straight segments is detected in each local seam image, and if intersection is found, the seam errors are calculated using the next straight segment. The experimental results show that kinked line seam can be well planned using this solution. 展开更多
关键词 robotic welding path planning visual servoing kinked line
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Virtual Political Communication in Bulgaria
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作者 Ivanka Mavrodieva 《Journalism and Mass Communication》 2014年第12期756-765,共10页
Social networks are the result of a couple of circumstances such as the current development of communication technology and the improvement of the opportunities for communication, access to new ideas, web-based inform... Social networks are the result of a couple of circumstances such as the current development of communication technology and the improvement of the opportunities for communication, access to new ideas, web-based information, electronic resources and database serving millions of people all over the world. Social networks have increased their public influence, which contain videotaped speeches and presentations. Multimodality has become a characteristic feature of contemporary political virtual communication. Bulgarian politicians appreciate the Internet as a tool for building popularity in its wealth of features, forms, and modes. Communicative tools and techniques have changed. The forms of the Bulgarian political communication found in the virtual environment such as sites, blogs, social networks, video clips, virtual forums, etc. are heterogeneous. Bulgarian citizens accept the Internet as a tool for increased political and social activities. Civil oratory, which is seen as a mechanism for efficient organizing of public events during election campaigns, protests, and demonstrations, is also present in the social networks. The citizens use a combination of verbal and visual elements; they are bloggers and participants in virtual political forums and actively participate in the spread of all kinds of forms of the social networks. They take part in the street demonstrations and organize performances; they ridicule politicians through posters and cartoons published online. Verbal and visual messages of the citizens come to real life during the protests and to virtual life in the social networks. The polyphony of social networks is a manifestation of virtual civil communication where the citizens in their virtual projection as netizens build up a new complex model of communication. 展开更多
关键词 virtual political communication SITES blogs social networks virtual political forums
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A Novel Robot Motion Planning Model based on Visual Navigation and Fuzzy Control
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作者 Xiaomin Wang 《International Journal of Technology Management》 2016年第9期58-60,共3页
In this paper, we propose the novel robot motion planning model based on the visual navigation and fuzzy control. A robot operating system can be viewed as the mechanical energy converter from the joint space to the g... In this paper, we propose the novel robot motion planning model based on the visual navigation and fuzzy control. A robot operating system can be viewed as the mechanical energy converter from the joint space to the global operation space, and the fiexibility of the robot system refi ects the global transformation ability of the whole system. Fuzzy control technology is a kind of fuzzy science, artificial intelligence, knowledge engineering and other disciplines interdisciplinary fields, the theory of strong science and technology, to achieve this fuzzy control technology theory, known as the fuzzy control theory. Besides this, this paper integrates the visual navigation system to construct the better robust methodology which is meaningful. 展开更多
关键词 Robot Motion Planning Model Visual Navigation Fuzzy Control.
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Face Detection Technology Based on Robot Vision
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作者 Guxiong Li 《International Journal of Technology Management》 2015年第9期43-45,共3页
One being developed automatic sweep robot, need to estimate if anyone is on a certain range of road ahead then automatically adjust running speed, in order to ensure work efficiency and operation safety. This paper pr... One being developed automatic sweep robot, need to estimate if anyone is on a certain range of road ahead then automatically adjust running speed, in order to ensure work efficiency and operation safety. This paper proposed a method using face detection to predict the data of image sensor. The experimental results show that, the proposed algorithm is practical and reliable, and good outcome have been achieved in the application of instruction robot. 展开更多
关键词 face detection gray integral skin color model robot vision
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Mastering Presenters by Means of Visual Aids: Assessing Students' Oral Presentations
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作者 Maria Luisa Renau Renau 《Sino-US English Teaching》 2013年第5期345-351,共7页
The introduction of the ICTs (Information and Communication Technologies) in education has set a new paradigm in knowledge acquisition. The Internet, overhead projectors and interactive boards, presentation and anim... The introduction of the ICTs (Information and Communication Technologies) in education has set a new paradigm in knowledge acquisition. The Internet, overhead projectors and interactive boards, presentation and animation software, and online databases are only some resources that teachers use in order to present information in a more dynamic, immediate, and stunning way, transforming and revitalizing the teaching-learning process. The ICTs have been established in the university classroom and nowadays, they have become an essential part in this teaching-learning process. Lecturers make use of them in the same proportion as they make of traditional materials. At the same time, students have to be acquainted with these new technologies and they also have to be able to deal with them. The objective of this paper is twofold: On the one hand, we study and show how our students make use of the technologies when they have to face their oral presentations in the subject Advanced English: Professional Settings (English Studies Degree at Universitat Jaume I in Castellen, Spain). It is acknowledged that visual aids can be helpful to support a speech, but we want to analyze if the visual aids are successfully applied, how and to which extent. On the other hand, we want to make out the opinions of their classmates about the use of these graphical resources (students fill in a questionnaire about the effectiveness of the visual aids in their classmates' presentations and how they would improve them). Results demonstrate that not only teachers make advantage of the new technological resources, we show, based on the students' oral presentations and their peer-reviews, that also our university students are increasingly aware of the advantage and importance of the ICTs in the classroom. 展开更多
关键词 VLE (Virtual Learning Environment) multimedia resources visual aids oral presentations
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Based on the visual communication design under the influence of the digital media research
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作者 ZHANG Ao 《International English Education Research》 2016年第4期84-85,共2页
The visual communication design is mainly ~om the perspective of people, heard with the help of media technology to convey the information to the design form of object. Visual communication design on people's behavio... The visual communication design is mainly ~om the perspective of people, heard with the help of media technology to convey the information to the design form of object. Visual communication design on people's behavior and lifestyle has obvious effect, due to the widespread attention of people. The development of modem social economy and science and technology has changed the way of information extraction, requires designers must be under the influence of digital media technology with more diverse forms of design of visual communication design research. In this paper, on the basis of the brief analysis of the visual communication characteristics and under the influence of digital media design language features, and studies the influence of digital media under the trend of the development of visual communication design several opinions are put forward. 展开更多
关键词 digital media Visual communication design Visual communication characteristics
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