Anusha Jayasiri | Tokyo Institute of Technology (original) (raw)
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Papers by Anusha Jayasiri
IntechOpen eBooks, Sep 20, 2023
Sri Lanka, as a developing country, the traffic congestions are becoming severe day by day becaus... more Sri Lanka, as a developing country, the traffic congestions are becoming severe day by day because of the population and the economic background. To overcome the congested areas, the traffic controlling light systems were introduced and used in most of the junctions. Existing traffic light system is based on the fixed cycle times for each phase, depending on the environmental conditions, geometry design of the junction and traffic movements of the particular junction. Among the most of the features at the road intersections, the feature called “Right-Turn-Bay” is an extra segment of lane which was introduced to the vehicles which are supposed to proceed right turning movement at the intersection. Because of the limited area of that lane segment, it can be filled easily. The proposed solution is to overcome the overflowing problem in the right-turn-bay by giving an extra cycle time period for the right turnings in busy time. For this real-time process, the image processing techniques...
Advances in Technology
Panoramic image creation is crucial in area of digital imaging. It is developed by combining an o... more Panoramic image creation is crucial in area of digital imaging. It is developed by combining an overlapped image component series of a large image, which is difficult to be focused on using a normal camera due to a large field of view. Measuring the quality of panoramic images is a challenging task. Therefore, the objectives of this research are to find the attributes of visual quality of panoramic images and to propose predictor variables for a statistical model for the quality of panoramic images of mural paintings. Authors have used a proposed novel method for creating panoramic images of mural painting. In this study, authors researched on the quality attributes of digital images. Accordingly, color balance, noise and distortion were identified as the two most critical factors which affect the overall quality of the panoramic images. Authors visited three temples and captured digital images of mural paintings of large scale using a simple method. Then, panoramic images were crea...
The Journal of the Institute of Image Electronics Engineers of Japan, 2014
Kalyani: Journal of the University of Kelaniya, 2019
Traffic congestion is a significant problem in recent years because of the everincreasing number ... more Traffic congestion is a significant problem in recent years because of the everincreasing number of vehicles in the roads and the poor management of traffic. Traffic congestions are not constant throughout the day. They are changing from time to time. Present traffic controllers have fixed time intervals for red, yellow and green signal lights and therefore, cannot provide a better solution for the dynamic traffic congestion during the day. Computer vision technology can be used to create an intelligent traffic controlling system which can adapt its time intervals according to the real traffic. In the existing traffic controlling systems, a wastage of the green signal duration occurs as fixed green signal duration assigned for a phase is sometimes larger than the actual requirement. Hence, the other roads at the intersection have to wait, in vain, with more traffic, until that fixed green time period is over. In the proposed method, real time traffic image sequences are analyzed by using image processing in order to obtain the actual traffic area. Then, time for green light is assigned according to that traffic area. Hence, the wastage of green signal duration is eliminated by the proposed method since it allocates time for the green signal that is sufficient for the actual traffic
International Conference on Advances in ICT for Emerging Regions (ICTer2012), 2012
In this paper we discussed how to incorporate haptic signals with a dynamic image sequence or oth... more In this paper we discussed how to incorporate haptic signals with a dynamic image sequence or other words a video to feel the motion of objects in it. Haptic technologies are being used in a wide range of application areas. However, the incorporation of haptic interface technology into a video media is still in its infancy. With the invention of digital multimedia and immersive displays, significance of exploring new ways of interacting with video media has grown up. Rather than just seeing and hearing a video, viewers' experience can be further enhanced by letting them feel the movement of the objects in the video through haptic interface, as it is an additional sensation to seeing and hearing. The objective of this research is to use haptic interface technology to interact with a video and enable the viewers to feel the motion of objects in the video beyond passive watching and listening. In this paper, we discuss how to feel the motion, which is computed from frame to frame calculation of velocity using optical flow. For haptic motion rendering, we have proposed a method by experimentally evaluating two methods using a gain controller and using a non-linear function. To interact with the video we used the string based haptic device, SPIDAR, which provides a high definition force feedback sensation to users.
2013 23rd International Conference on Artificial Reality and Telexistence (ICAT), 2013
ABSTRACT We present a method to feel the movement of objects in object rich image sequences using... more ABSTRACT We present a method to feel the movement of objects in object rich image sequences using SPIDAR-G haptic device. This method addresses two major drawbacks of our previous research in object motion rendering in an image sequences. On the one hand, it changes the role of the user from passive to active by enabling the user to select the desired object of which she or he needs to feel the movement. On the other hand, it reduces the impact of background noise on haptic feedback by limiting the sensible region for motion force calculation to an area of a specified size around the point selected by the user. This paper presents the details of the proposed method and some preliminary results of an experimental evaluation involving real users. Experimental results show that having haptic feedback enhances the user experience with videos. It further reveals that the proposed system has smooth and immersive interaction with object rich video contents.
Image haptization systems for 2D images and depth images with local deformation have been propose... more Image haptization systems for 2D images and depth images with local deformation have been proposed, and from the experiments they have been proved effective in improvement of image contents perception and user interests. However, a comparison between the two kinds of systems has not been done. This paper compares the depth image haptization system with the 2D image haptization system based on a user questionnaire. Keywords-haptization; image haptization; comparison; depth iamge
2020 International Research Conference on Smart Computing and Systems Engineering (SCSE), 2020
The purpose of this research is to implement a system that can be a help for drivers to drive veh... more The purpose of this research is to implement a system that can be a help for drivers to drive vehicles safely and reducing accidents. Most of the accidents have occurred when overtaking. The driver has to consider the distance between two vehicles and the speed of the front vehicle. If there is another vehicle moving the same or opposite direction, it must be considered as well. Also, traffic signs, solid line, and a broken line must be considered. Reducing the errors which can be happened by the driver when deciding all these stuff in instinct is the goal of the “Automated Vehicle Overtaking System”. This research has been used three pipelines, such as lane line detection, traffic sign detection, and vehicle detection. The input video stream from the front view camera of the vehicle is transferred through the above pipelines. The system gives the final output frame with confirmation that ‘is it safe to overtake now’. The driver can recognize the danger by alarm sound from the syste...
Sri Lanka being a developing country, its traffic congestions are becoming severe day by day beca... more Sri Lanka being a developing country, its traffic congestions are becoming severe day by day because of the population and the economic background. To overcome the congestions, traffic controlling light systems are introduced for most of the junctions. The existing traffic controlling light system is based on a fixed cycle times for each signal phase and they depend on environmental conditions, geometry design and traffic movements of the particular junction. Among the most of the designs mentioned above, the geometry design called “Right-Turn Bay” is an extra segment of lane which was introduced to the waiting vehicles that are supposed to turn into right-side at the intersection. Because of the limited area of that lane segment, it can be overflown within few seconds for busy hours. The solution proposed in this paper is to overcome the overflowing problem in the Right-turn bay by giving an extra cycle time period for the right turnings at busy times. For the real-time process, th...
2015 IEEE Virtual Reality (VR), 2015
International Journal on Advances in ICT for Emerging Regions (ICTer), 2013
In this paperwe discussed how to incorporate haptic signals with a dynamic image sequence or othe... more In this paperwe discussed how to incorporate haptic signals with a dynamic image sequence or other words a videoto feel the motion of objects in it.Haptic technologies are being used in a wide range of application areas. However, the incorporation of haptic interface technology into a video media is still in its infancy. With the invention of digital multimedia and immersive displays, significance of exploring new ways of interacting with video media has grown up. Rather than just seeing and hearing a video, viewers' experience can be further enhanced by letting them feel the movement of the objects in the video through haptic interface, as it is an additional sensation to seeing and hearing. The objective of this research is to use haptic interface technology to interact with a video and enable the viewers to feel the motion of objects in the video beyond passive watching and listening. In this paper, we discuss how to feel the motion, which is computed from frame to frame calculation of velocity using optical flow. For haptic motion rendering, we have proposed a method by experimentallyevaluating two methods using a gain controller and using a non-linear function. To interact with the video we used the string based haptic device, SPIDAR, which provides a high definition force feedback sensation to users.
IntechOpen eBooks, Sep 20, 2023
Sri Lanka, as a developing country, the traffic congestions are becoming severe day by day becaus... more Sri Lanka, as a developing country, the traffic congestions are becoming severe day by day because of the population and the economic background. To overcome the congested areas, the traffic controlling light systems were introduced and used in most of the junctions. Existing traffic light system is based on the fixed cycle times for each phase, depending on the environmental conditions, geometry design of the junction and traffic movements of the particular junction. Among the most of the features at the road intersections, the feature called “Right-Turn-Bay” is an extra segment of lane which was introduced to the vehicles which are supposed to proceed right turning movement at the intersection. Because of the limited area of that lane segment, it can be filled easily. The proposed solution is to overcome the overflowing problem in the right-turn-bay by giving an extra cycle time period for the right turnings in busy time. For this real-time process, the image processing techniques...
Advances in Technology
Panoramic image creation is crucial in area of digital imaging. It is developed by combining an o... more Panoramic image creation is crucial in area of digital imaging. It is developed by combining an overlapped image component series of a large image, which is difficult to be focused on using a normal camera due to a large field of view. Measuring the quality of panoramic images is a challenging task. Therefore, the objectives of this research are to find the attributes of visual quality of panoramic images and to propose predictor variables for a statistical model for the quality of panoramic images of mural paintings. Authors have used a proposed novel method for creating panoramic images of mural painting. In this study, authors researched on the quality attributes of digital images. Accordingly, color balance, noise and distortion were identified as the two most critical factors which affect the overall quality of the panoramic images. Authors visited three temples and captured digital images of mural paintings of large scale using a simple method. Then, panoramic images were crea...
The Journal of the Institute of Image Electronics Engineers of Japan, 2014
Kalyani: Journal of the University of Kelaniya, 2019
Traffic congestion is a significant problem in recent years because of the everincreasing number ... more Traffic congestion is a significant problem in recent years because of the everincreasing number of vehicles in the roads and the poor management of traffic. Traffic congestions are not constant throughout the day. They are changing from time to time. Present traffic controllers have fixed time intervals for red, yellow and green signal lights and therefore, cannot provide a better solution for the dynamic traffic congestion during the day. Computer vision technology can be used to create an intelligent traffic controlling system which can adapt its time intervals according to the real traffic. In the existing traffic controlling systems, a wastage of the green signal duration occurs as fixed green signal duration assigned for a phase is sometimes larger than the actual requirement. Hence, the other roads at the intersection have to wait, in vain, with more traffic, until that fixed green time period is over. In the proposed method, real time traffic image sequences are analyzed by using image processing in order to obtain the actual traffic area. Then, time for green light is assigned according to that traffic area. Hence, the wastage of green signal duration is eliminated by the proposed method since it allocates time for the green signal that is sufficient for the actual traffic
International Conference on Advances in ICT for Emerging Regions (ICTer2012), 2012
In this paper we discussed how to incorporate haptic signals with a dynamic image sequence or oth... more In this paper we discussed how to incorporate haptic signals with a dynamic image sequence or other words a video to feel the motion of objects in it. Haptic technologies are being used in a wide range of application areas. However, the incorporation of haptic interface technology into a video media is still in its infancy. With the invention of digital multimedia and immersive displays, significance of exploring new ways of interacting with video media has grown up. Rather than just seeing and hearing a video, viewers' experience can be further enhanced by letting them feel the movement of the objects in the video through haptic interface, as it is an additional sensation to seeing and hearing. The objective of this research is to use haptic interface technology to interact with a video and enable the viewers to feel the motion of objects in the video beyond passive watching and listening. In this paper, we discuss how to feel the motion, which is computed from frame to frame calculation of velocity using optical flow. For haptic motion rendering, we have proposed a method by experimentally evaluating two methods using a gain controller and using a non-linear function. To interact with the video we used the string based haptic device, SPIDAR, which provides a high definition force feedback sensation to users.
2013 23rd International Conference on Artificial Reality and Telexistence (ICAT), 2013
ABSTRACT We present a method to feel the movement of objects in object rich image sequences using... more ABSTRACT We present a method to feel the movement of objects in object rich image sequences using SPIDAR-G haptic device. This method addresses two major drawbacks of our previous research in object motion rendering in an image sequences. On the one hand, it changes the role of the user from passive to active by enabling the user to select the desired object of which she or he needs to feel the movement. On the other hand, it reduces the impact of background noise on haptic feedback by limiting the sensible region for motion force calculation to an area of a specified size around the point selected by the user. This paper presents the details of the proposed method and some preliminary results of an experimental evaluation involving real users. Experimental results show that having haptic feedback enhances the user experience with videos. It further reveals that the proposed system has smooth and immersive interaction with object rich video contents.
Image haptization systems for 2D images and depth images with local deformation have been propose... more Image haptization systems for 2D images and depth images with local deformation have been proposed, and from the experiments they have been proved effective in improvement of image contents perception and user interests. However, a comparison between the two kinds of systems has not been done. This paper compares the depth image haptization system with the 2D image haptization system based on a user questionnaire. Keywords-haptization; image haptization; comparison; depth iamge
2020 International Research Conference on Smart Computing and Systems Engineering (SCSE), 2020
The purpose of this research is to implement a system that can be a help for drivers to drive veh... more The purpose of this research is to implement a system that can be a help for drivers to drive vehicles safely and reducing accidents. Most of the accidents have occurred when overtaking. The driver has to consider the distance between two vehicles and the speed of the front vehicle. If there is another vehicle moving the same or opposite direction, it must be considered as well. Also, traffic signs, solid line, and a broken line must be considered. Reducing the errors which can be happened by the driver when deciding all these stuff in instinct is the goal of the “Automated Vehicle Overtaking System”. This research has been used three pipelines, such as lane line detection, traffic sign detection, and vehicle detection. The input video stream from the front view camera of the vehicle is transferred through the above pipelines. The system gives the final output frame with confirmation that ‘is it safe to overtake now’. The driver can recognize the danger by alarm sound from the syste...
Sri Lanka being a developing country, its traffic congestions are becoming severe day by day beca... more Sri Lanka being a developing country, its traffic congestions are becoming severe day by day because of the population and the economic background. To overcome the congestions, traffic controlling light systems are introduced for most of the junctions. The existing traffic controlling light system is based on a fixed cycle times for each signal phase and they depend on environmental conditions, geometry design and traffic movements of the particular junction. Among the most of the designs mentioned above, the geometry design called “Right-Turn Bay” is an extra segment of lane which was introduced to the waiting vehicles that are supposed to turn into right-side at the intersection. Because of the limited area of that lane segment, it can be overflown within few seconds for busy hours. The solution proposed in this paper is to overcome the overflowing problem in the Right-turn bay by giving an extra cycle time period for the right turnings at busy times. For the real-time process, th...
2015 IEEE Virtual Reality (VR), 2015
International Journal on Advances in ICT for Emerging Regions (ICTer), 2013
In this paperwe discussed how to incorporate haptic signals with a dynamic image sequence or othe... more In this paperwe discussed how to incorporate haptic signals with a dynamic image sequence or other words a videoto feel the motion of objects in it.Haptic technologies are being used in a wide range of application areas. However, the incorporation of haptic interface technology into a video media is still in its infancy. With the invention of digital multimedia and immersive displays, significance of exploring new ways of interacting with video media has grown up. Rather than just seeing and hearing a video, viewers' experience can be further enhanced by letting them feel the movement of the objects in the video through haptic interface, as it is an additional sensation to seeing and hearing. The objective of this research is to use haptic interface technology to interact with a video and enable the viewers to feel the motion of objects in the video beyond passive watching and listening. In this paper, we discuss how to feel the motion, which is computed from frame to frame calculation of velocity using optical flow. For haptic motion rendering, we have proposed a method by experimentallyevaluating two methods using a gain controller and using a non-linear function. To interact with the video we used the string based haptic device, SPIDAR, which provides a high definition force feedback sensation to users.