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
Crowd density estimation in wide areas is a challenging problem for visual surveillance. Because of the high risk of degeneration, the safety of public events involving large crowds has always been a major concern. In...Crowd density estimation in wide areas is a challenging problem for visual surveillance. Because of the high risk of degeneration, the safety of public events involving large crowds has always been a major concern. In this paper, we propose a video-based crowd density analysis and prediction system for wide-area surveillance applications. In monocular image sequences, the Accumulated Mosaic Image Difference (AMID) method is applied to extract crowd areas having irregular motion. The specific number of persons and velocity of a crowd can be adequately estimated by our system from the density of crowded areas. Using a multi-camera network, we can obtain predictions of a crowd's density several minutes in advance. The system has been used in real applications, and numerous experiments conducted in real scenes (station, park, plaza) demonstrate the effectiveness and robustness of the proposed method.展开更多
The paradigms of old media are replaced by new forms of creativity and delivery of content by those who strive to enhance innovative ways of communication and learning based on universally accepted guidelines. These u...The paradigms of old media are replaced by new forms of creativity and delivery of content by those who strive to enhance innovative ways of communication and learning based on universally accepted guidelines. These ubiquitous rules of design are what scholars in the field of call as the principles of design. Particularly when instructional effectiveness of a new message is under close lens, instructional designers unanimously accept and implement these design principles in the process of planning and designing products for consumers and/or learners With today＇s digital revolution and technological break-throughs, instructional designers need to keep seeking new forms of design, communication, and learning with various forms of instructional media and innovative, technology-rich design techniques. Given this educational milieu in an ever-growing digital world of learning and instruction, this paper will focus on eliciting some of these most innovative and outstanding instructional design （ID） products and evaluate their effectiveness in learning and teaching environments based on an army of ID principles generally accepted by the scholars of the field.展开更多
文摘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.
基金supported by the National Natural Science Foundation of China under Grant No. 61175007the National Key Technologies R&D Program under Grant No. 2012BAH07B01the National Key Basic Research Program of China (973 Program) under Grant No. 2012CB316302
文摘Crowd density estimation in wide areas is a challenging problem for visual surveillance. Because of the high risk of degeneration, the safety of public events involving large crowds has always been a major concern. In this paper, we propose a video-based crowd density analysis and prediction system for wide-area surveillance applications. In monocular image sequences, the Accumulated Mosaic Image Difference (AMID) method is applied to extract crowd areas having irregular motion. The specific number of persons and velocity of a crowd can be adequately estimated by our system from the density of crowded areas. Using a multi-camera network, we can obtain predictions of a crowd's density several minutes in advance. The system has been used in real applications, and numerous experiments conducted in real scenes (station, park, plaza) demonstrate the effectiveness and robustness of the proposed method.
文摘The paradigms of old media are replaced by new forms of creativity and delivery of content by those who strive to enhance innovative ways of communication and learning based on universally accepted guidelines. These ubiquitous rules of design are what scholars in the field of call as the principles of design. Particularly when instructional effectiveness of a new message is under close lens, instructional designers unanimously accept and implement these design principles in the process of planning and designing products for consumers and/or learners With today＇s digital revolution and technological break-throughs, instructional designers need to keep seeking new forms of design, communication, and learning with various forms of instructional media and innovative, technology-rich design techniques. Given this educational milieu in an ever-growing digital world of learning and instruction, this paper will focus on eliciting some of these most innovative and outstanding instructional design （ID） products and evaluate their effectiveness in learning and teaching environments based on an army of ID principles generally accepted by the scholars of the field.
