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This paper discusses an approach for in-situ creation of augmented reality experiences using friendly markers. We introduce the notion of friendly markers and how we have empirically defined it. A mobile application is built for users to turn the physical markers into augmented reality experiences. The application enables users to recognize and interact with friendly markers. The bottleneck of marker...
At present, the smart phones are mostly touch based, and they don't have an input hardware (keyboard) associated with them. Also, the software keyboard present in these smart devices, are very small as compared to desktop/laptop. This results in slow typing and also, causing inconvenience for the disabled people. In the smart devices (mobile, tablets, TV etc.), a hardware keyboard is missing. There...
Current Mobile Augmented Reality (AR) browsers do not reflect users' immediate contexts and lack support for contextual interaction. Such limitations turn users away from the experience, even those who are genuinely interested in the technology. Mobile AR needs a serious move towards a better experience driven by user generated content. This paper discusses InterAKT, a mobile augmented reality browser...
We introduce and investigate several criteria for matching the outer contour generated by a model of the manipulation target against the image data captured with a stereo camera rig. The more complex criteria are intended for the initial stage of scene analysis, to provide pose and location estimation for path planning, and the faster methods can be used in real-time, e.g. for providing feedback during...
Feature matching is at the base of the target detection problem. Current methods rely on costly descriptors for detection and matching. This paper presents an improved feature descriptor based on ORB, called Gravity-ORB for target detection in mobile devices. Compared with traditional descriptors such as SIFT or ORB, the concept design can perform fast feature matching under the condition of keeping...
With rapidly increasing smartphone user base in the country, many opportunities revolving the same can be explored. India being a multilingual nation, domestic/international tourist needs several language solutions on their fingertips. Applications such as instant language translation, maps, travel assistance, routes, restaurants, banks etc. have become a necessity on smartphones in the current scenario...
Object trackers can be broadly classified into two types — feature based and color based. The feature based trackers are scale and illumination invariant whereas color trackers are better at handling occlusions and long term object detection. In this paper we propose a hybrid tracker that uses a feature based Circulant Structure tracker and a color based Mean Shift tracker running in parallel, that...
This paper proposes a novel image tracking technique for the image-based positioning study on the mobile device. The study uses the panorama as the indoor map to localize the user. Since the number of feature points of the panorama is much larger than feature points from the image of the mobile device, the performance of matching mobile device image with the panorama will significantly affect the...
Face spoofing detection (i.e. face anti-spoofing) is emerging as a new research area and has already attracted a good number of works during the past five years. This paper addresses for the first time the key problem of the variation in the input image quality and resolution in face anti-spoofing. In contrast to most existing works aiming at extracting multiscale descriptors from the original face...
In this paper, we present two novel guidance laws for an unmanned aerial vehicle (UAV) equipped with a fixed camera to track a mobile ground target. The system dynamics is established in the level local coordinate frame, removing the need of converting the target location information to the global inertial frame. The first guidance law is developed using backstepping technique requiring the estimation...
In this paper, a method todetect environmental hazards related to a fall risk using a mobile vision system is proposed. First-person perspective videos are proposed to provide objective evidence on cause and circumstances of perturbedbalance during activities of daily living, targeted to seniors. A classification problem was defined with 17 total classes of potential fall risks, including slope changes...
Success of teleoperation tasks for mobile robots in disaster scenarios depends largely on the skills of the operator. This article proposes a solution to facilitate this task with two UGVs working together in a master-slave structure. The slave robot is used as an external mobile camera, being able to select the best view for each situation, as you can do in video games. This method has several advantages...
Stereo vision is an active research topic in computer vision. Point Grey® Bumblebee® and digital single-lens reflex camera (DSLR) are normally found in the stereo vision research, they are robust but expensive. Open source electronic prototyping platforms such as Arduino and Raspberry Pi are interesting products, which allows students or researchers to custom made inexpensive experimental equipment...
With the progress of modern society and the environment pollution pricking up, people's requirement of quality of life is increasingly improved. Mobile biological air purifier can track pedestrians, adsorb and decompose or transform various air pollutants around pedestrian environment, improve air quality, has energy saving, environmental protection and beauty, give full play to the purifying effect,...
Drug efficacy assays with microplate readers are a key aspect of the modern drug discovery process. However, microtitre plate readers are expensive laboratory equipment and not easily transportable. We have created a prototype Android smartphone application that enables smartphones to measure the concentration values in microplate wells. We find that the smartphone camera measures concentrations of...
In the paper, the problem of vision systems development for mobile robotics is considered. A model of a vision system is proposed. The purpose and the algorithm of the system and technical equipment justification are described. UML class diagram of stream configurator was built.
In recent years, augmented-reality (AR) has been attracting extensive attentions from both the research community and industry as a new form of media, mixing virtual content into the physical world. However, the scarcity of the AR content and the lack of user contexts are major impediments to providing and representing rich and dynamic multimedia content on AR applications. In this study, we propose...
The purpose of this paper is the metrological characterization of the infrared distance sensor Teraranger One, developed and built by Terabee HQ, located in Saint Genis Poully, near Geneve. The purpose of this project is to give to the aircraft a frontal anticollision system based on the sensor in question, with the additional functionality of maintaining a fixed distance from the detected target...
This paper presents the design and analysis of a computer vision-aided motion sensing algorithm for wheeled mobile robot's indoor navigation. The algorithm is realized using two vision cameras attached on a wheeled mobile robot. The first camera is positioned at front-looking direction while the second camera is positioned at downward-looking direction. An algorithm is developed to process the images...
Augmented Reality (AR) is one of the Ubiquitous Computing Technologies that can be used for realizing Internet of Things (IoT) application. The fact is to create an artificial world that provides sense of a real world where a real life is enhanced by virtual elements in real times. This project deals with the development and implementation of Augmented Reality software for linguistic conversion on...
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