Compression-Based Tools for Navigation with an Image Database

Lillo, Antonella Di; Daptardar, Ajay H.; Thomas, K. T.; Storer, James A.; Motta, Giovanni

doi:10.3390/a5010001

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…It is our belief that such a system can pave the way for the realization of optimized and smart devices, based on EM technology, to support the autonomous mobility of people affected by visual diseases. For example, navigation in indoor environments represents a highly challenging task for the severely visually impaired that stimulates the interest of many research activities [ 19 , 20 ]. In this context, interesting opportunities may arise in joining EM technology and assistive robotics: autonomous mobile robots could be adapted to work as assistive robots, realizing an automated system able to guide a visually impaired subject along desired paths in complex indoor environments such as airports, stations, or hospitals.…”

Section: Discussionmentioning

confidence: 99%

Design and Realization of an Electromagnetic Guiding System for Blind Running Athletes

Pieralisi

Petrini

Mattia

et al. 2015

Sensors

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Nowadays the technologies aimed at improving the quality of life of people affected by visual diseases are quite common; e.g., devices to support walking or reading. Surprisingly, there is a lack of innovative technologies aimed at helping visually impaired athletes during physical activities. An example is represented by blind runners who need to be physically linked to a sighted guide by means of non-stretchable tethers during races; with consequent limitations in terms of performance and independence. This paper wants to investigate the possibility of realizing a system able to guide blind runners along a complex path, paving the way for the realization of an innovative device designed to improve their independence during training or competitions. The system consists of: (1) a mobile unit, which is placed before the runner and generates two “electromagnetic walls” delimiting the way; (2) a receiving unit (worn by the athlete) that provides vibro-tactile warnings every time the user is going outside the safe area so as to encourage him to move toward the central position. The feasibility and the utility of the system proposed are demonstrated by means of tests carried out thanks to the collaboration of a blind volunteer.

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Section: Discussionmentioning

confidence: 99%

Design and Realization of an Electromagnetic Guiding System for Blind Running Athletes

Pieralisi

Petrini

Mattia

et al. 2015

Sensors

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“…These cases require global geo-referencing with highly accurate absolute 3D coordinates and may include GPS/IMU; however, harsh and poor environmental conditions limit the performance of GPS/IMU navigation. Thus, map-based vision navigation is implemented by providing a moving platform with a geo-referenced 3D model of the environment, such as a 3D map, landmark, and geo-referenced image database (GRID) [ 3 , 15 , 16 ]. Map-based vision navigation considers the map as a sensor to match the real-time imaging sensor and facilitate highly accurate absolute navigation in advanced driver assistance systems (ADAS).…”

Section: Introductionmentioning

confidence: 99%

An Imaging Sensor-Aided Vision Navigation Approach that Uses a Geo-Referenced Image Database

et al. 2016

Sensors

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In determining position and attitude, vision navigation via real-time image processing of data collected from imaging sensors is advanced without a high-performance global positioning system (GPS) and an inertial measurement unit (IMU). Vision navigation is widely used in indoor navigation, far space navigation, and multiple sensor-integrated mobile mapping. This paper proposes a novel vision navigation approach aided by imaging sensors and that uses a high-accuracy geo-referenced image database (GRID) for high-precision navigation of multiple sensor platforms in environments with poor GPS. First, the framework of GRID-aided vision navigation is developed with sequence images from land-based mobile mapping systems that integrate multiple sensors. Second, a highly efficient GRID storage management model is established based on the linear index of a road segment for fast image searches and retrieval. Third, a robust image matching algorithm is presented to search and match a real-time image with the GRID. Subsequently, the image matched with the real-time scene is considered to calculate the 3D navigation parameter of multiple sensor platforms. Experimental results show that the proposed approach retrieves images efficiently and has navigation accuracies of 1.2 m in a plane and 1.8 m in height under GPS loss in 5 min and within 1500 m.

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Compressed matching for feature vectors

Klein

Shapira

2016

Theoretical Computer Science

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Compression-Based Tools for Navigation with an Image Database

Cited by 5 publications

References 28 publications

Design and Realization of an Electromagnetic Guiding System for Blind Running Athletes

Design and Realization of an Electromagnetic Guiding System for Blind Running Athletes

An Imaging Sensor-Aided Vision Navigation Approach that Uses a Geo-Referenced Image Database

Compressed matching for feature vectors

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