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Circuit breaker is the essential electrical equipment of power plants and substations in distribution equipment. It shoulders the dual task of control and protection in Power System. Breaker as the power system is an important switching equipment, the merits of its motion feature has an important impact on the safety of the grid. Due to the motion characteristics of a conventional circuit breaker...
In this paper, we introduce a computer vision-based attack using stereo cameras against authentication approaches for touch-enabled devices. In the attack, an attacker uses a stereo camera (such as one on the HTC Evo 3D smartphone) and takes a video of a victim entering passwords on the touch screen of the victim's mobile device. We focus on challenging scenarios where the victim holds the device...
In this paper, we propose a novel method which combines with color microarray cameras and super-resolution algorithms. Compared with ordinary cameras, the array camera can capture more details of the image, so better quality low resolution images can be obtained. Array camera has been a great application in depth map extraction and image super-resolution reconstruction [3,4,5]. Pelican and Columbia...
With the explosion of Virtual Reality technologies, the production and usage of omni directional images (a.k.a 360 images) is presenting new challenges in the domains of compression, transmission and rendering. The evaluation of the quality of images generated by these technologies is therefore paramount. As the exploration of 360 images within a Head-Mounted Display (HMD) is non-uniform, current...
In this study, a new method is proposed to achieve a high resolution (HR) image from low resolution (LR) video frames, which include camera motions as well as local motions. The best matching block in the motion estimation is obtained by using the variable size block matching (VSBM) algorithm. Furthermore, before merging the pixels, the outlier pixels were cleaned using statistical outlier detection...
Camera networks have become more predominant in many aspects around our society. Designing active Pan-Tilt-Zoom (PTZ) camera networks requires placing the cameras appropriately in the environment according to the designated coverage requirements as well as examining the network's operational resilience to the environment dynamics. This design process is crucial before physically establishing the network...
This paper proposes the method of vehicle license plate recognition, which is essential in the field of intelligent transportation system. The purpose of the study is to present a simple and effective vehicle license plate detection and recognition using non-bling image de-blurring algorithm. The sharpness of the edges in an image is restored by the prior information on images. The blue kernel is...
In this paper, we propose two relatively simplistic and efficient methods for depth reconstruction from very sparsely sampled random depth data. Both the proposed approaches exploit the segmentation cue from a registered colour image of the same scene. The first approach which we term as plane fitting depth reconstruction (PFitDR), involves cost computations on plane-fitted depth values over local...
Lensless imaging systems, such as the recently proposed FlatCam, offer numerous advantages over lens-based systems such as a thin form-factor, low cost, and higher light throughput. However, little work has been done in analyzing these systems' depth of field characteristics. A depth-dependent calibration step is necessary to obtain the image from the FlatCam measurements, and this calibration determines...
Multi-frame image super-resolution (SR) is an image processing technology applicable to any digital, pixilated camera that is limited, by construction, to a certain number of pixels. The objective of SR is to utilize signal processing to overcome the physical limitation and emulate the “capabilities” of a camera with a higher-density pixel array. SR is well known to be an ill-posed problem and, consequently,...
We present a novel framework for precisely estimating dense depth maps by combining 3D lidar scans with a set of uncalibrated camera RGB color images for the same scene. Rough estimates for 3D structure obtained using structure from motion (SfM) on the uncalibrated images are first co-registered with the lidar scan and then a precise alignment between the datasets is estimated by identifying correspondences...
Flapping flight observed in bats offers a promising model for bio-inspiration of small air vehicles because of their high maneuverability, load carrying capacity, and energy efficiency. However, the flight mechanics of bats is very complex due to the highly articulated wing skeleton and the anisotropic, internally-actuated wing membrane. As a result of these complexities, the shape of bat wings can...
Upgrading hardware and post-process are two usually used methods to alleviate the low-resolution problem of Space imaging. However, the former produces an expensive cost and increases not only the development cycle but also volume and weight of CubeSat, and the latter causes large transmission of data flow and is very time-consuming. To solve the problems above, in this paper, we design a High-Resolution...
We describe a novel automatic calibration method using a single camera for a multiple-projector spherical Fish Tank Virtual Reality (FTVR) display. Modeling the projector as an inverse camera, we estimate the intrinsic and extrinsic projector parameters automatically using a set of projected images on the spherical screen. A calibrated camera is placed beneath to observe partially visible projected...
Recently, concerns have increased over careless accidents and invasion of privacy caused by drones, in proportion to the growth of the consumer drone market. Accordingly, some countries including the US and Japan, and in Europe are establishing regulations and guidelines for drones aviation. However, the rules primarily concern aviation safety, and define broad criteria for invasion of privacy. Lack...
This paper deals with a design of specific marker detector and tracker for semiautonomous convoy purpose. The solution is based on computer vision. The detectors main requirement is the specific marker recognition ability for various environments. The next part of this paper deals with tracking of marker by KLT algorithm. This solution was primary designed for a semi-autonomous convoy task, where...
This paper presents a mechatronics setup based on a reaction wheel inverted pendulum (RWIP). The novelty of this setup is the use of visual feedback (VF) to control a RWIP while the use of a low-cost camera to achieve control was the main motivating factor. The physical parameters that affect the bandwidth were identified from a mathematical model. In turn, relationships between the system bandwidth...
With the recent advent of 360 cameras, spherical panorama images are becoming more popular and widely available. In a spherical panorama, alignment of the scene orientation to the image axes is important for providing comfortable and pleasant viewing experiences using VR headsets and traditional displays. This paper presents an automatic framework for upright adjustment of 360 spherical panorama images...
In this paper a new approach for image processing technique of different resolutions and size was developed. The method was implemented on specially built experimental setup and utilizing the Python software with its special libraries such as scikit-image. The developed method was tested on series of images of different resolutions (640×480, 1280×720, 1920×1080, 2592×1944). The results of its implementation...
The super-resolution reconstruction is an important method for improving the image quality, and the objective world can be better understood from 3D super-resolution model than from 2D images. In this paper, the image super-resolution reconstruction algorithm based on wavelet and the 3D geometric modeling technology were combined to study the 3D super-resolution reconstruction of images. Firstly,...
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