Real-Time Stereo Vision Applications

Georgoulas, Christos; Sirakoulis, Georgios Ch.; Andreadis, Ioannis

doi:10.5772/9288

Cited by 9 publications

(6 citation statements)

References 51 publications

(46 reference statements)

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“…The authors presented a comparison between the SAD (Sum of Absolute Differences) algorithm and a dynamic programming technique (both running on 640 × 480 pixels images), obtaining outputs of 162 and 81 frames per second, respectively. Georgoulas and Andreadis [15] presented the design and implementation of a real-time hardware-based stereo vision system. In their work, a new algorithm that mixes SAD with fuzzy logic was used, obtaining outputs with 1713 frames per second when considering images with 320 × 240 pixels.…”

Section: Related Work In Stereo Vision and Image Restoration Implemementioning

confidence: 99%

“…As can be observed, in stereo vision the disparity calculation (for stereo vision) is complex and, generally, obtained using Census Transform, SAD, SSD, or dynamic programming techniques, among others [13,15,17]. Mathematical operations need to be performed efficiently to be used in real-time stereo vision systems.…”

Section: Related Work In Stereo Vision and Image Restoration Implemementioning

confidence: 99%

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A real-time stereo vision system for distance measurement and underwater image restoration

Sánchez-Ferreira

Mori

Farias

et al. 2016

J Braz. Soc. Mech. Sci. Eng.

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Section: Related Work In Stereo Vision and Image Restoration Implemementioning

confidence: 99%

Section: Related Work In Stereo Vision and Image Restoration Implemementioning

confidence: 99%

A real-time stereo vision system for distance measurement and underwater image restoration

Sánchez-Ferreira

Mori

Farias

et al. 2016

J Braz. Soc. Mech. Sci. Eng.

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show abstract

“…As shown in Fig. 2, based on the triangle method as we can determine the depth by the following equation: (1) and the depth can be easily determined by:…”

Section: Implementation Of Sadmentioning

confidence: 99%

“…Stereo matching is a problem to find correspondences between two input images [1], [2]. It is one of fundamental computer vision problems with a wide range of applications, and hence it has been extensively studied in the computer vision field for many recent years .…”

Section: Introductionmentioning

confidence: 99%

Efficient determination of disparity map from stereo images with modified sum of absolute differences (SAD) algorithm

Hoa

Dung

Dzung

2013

2013 International Conference on Advanced Technologies for Communications (ATC 2013)

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This paper proposes modification of the conventional Sum of Absolute Differences (SAD) for performance improvement in depth-map estimation from stereo images captured by a camera in a stereo system. The conventional SAD is commonly search in whole stereo images to find out the difference in pixels between the left and right captured images, and then obtains the corresponding disparity map and this may lead to high elapsing time. In order to reduce the number of searching pixels, the proposed modified SAD tries to estimate the difference only from edge pixels which are referred as pixels-ofinterest and bring significant information about depth map. The number of pixels being searched is reduced to about 17% on the total pixels, hence the total elapsing time is saved up to around 89% compared to that of the conventional SAD. This results is promising for implementation of a real-time vision system. Keywords-sum of absolute difference, stereo camera, disparity map, stereo visionI.

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“…Many efforts have been made towards efficient solutions to address the various issues of stereo matching. As the improvements in computational resources steadily increase, the demand for real-time applications is getting compulsory 12 . The most common approach for extracting depth information from intensity images is by means of a stereo camera setup.…”

Section: Human-machine Interaction Schemementioning

confidence: 99%

A Multi-Robotic Assistant System (MRAS): A development approach with application to the ageing society

Linner¹,

Georgoulas²,

Böck³

2012

Gerontechnology

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Purpose Our purpose was to develop, by combining architectural and robotic elements, a system that assists elderly people to live self-sufficiently at home. Unlike many other assistance systems our system exploits the ceiling space in order to avoid collisions with conventional living functions. Method Elderly people face numerous limitations in their everyday life. The simplest regular tasks a healthy individual performs appear quite different from the perspective of the ageing adult. Healthcare and mobility usually appear as distant services in cases of isolated individuals or lack of transportation due to disability. This paper deals with the development of a novel multi-robot assistant system (MARS), which can be used to provide indoor quality services to the ageing society. In order to realize the MARS concept the following development approach was used: (i) research and identification of needs; (ii) definition of requirements; (iii) identification of technologies and processes; (iv) initial concept; (v) experiments in real environment; and (vi) final concept and further development roadmap. Results & Discussion A ceiling suspended robotic system is proposed, navigating with the aid of a grid-type rail system among various rooms within a residence. This enables efficient space utilization since it occupies the redundant area of the ceiling. Various types of services can be provided by the proposed system such as health monitoring, infotainment, communications, problem solving, movement assistance, etc. A vision system aids in obtaining accurate information on the location of the individual within the residence, and in guiding the whole system during the operation of the required tasks. A series of experiments were conducted in order to define the proposed system specifications. Verification experiments in a real residence with three different individuals were performed, in order to calculate the forces applied to the human body while sitting and standing up (Figure 1). This type of movement is the most awkward and laborious for elderly people. MRAS can assist elderly people by using a flexible pulling wire which can be easily either grabbed by the user or fastened onto.

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Real-Time Stereo Vision Applications

Cited by 9 publications

References 51 publications

A real-time stereo vision system for distance measurement and underwater image restoration

A real-time stereo vision system for distance measurement and underwater image restoration

Efficient determination of disparity map from stereo images with modified sum of absolute differences (SAD) algorithm

A Multi-Robotic Assistant System (MRAS): A development approach with application to the ageing society

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