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This paper describes part of project that implemented the image processing of a CMOS sensor for endoscopic purposes. The sensor is a small sized device of 1×1mm2 and the image processing has been done inside a FPGA. This part of the work describes the implementation of the Gamma function with a balance between the resources needed and the accuracy. A linear piecewise solution was used that stores...
In previous work it has been shown that volume registration can be used to generate dense 3D maps from RGBD video data with various advantages over feature matching approaches. This paper presents preliminary work in applying this technique to general monocular video data. This approach does not require additional RGB-D hardware and generates dense 3D models with similar complexity.
In this paper we present a large-area interactive mixed reality system where multiple users can experience an event simultaneously. Through the combination of a number of innovative methods, the system can tackle common problems that are inherent in most existing mixed reality solutions, such as robustness against lighting conditions, static occlusion, illumination correction, registration and tracking...
This paper presents a detailed, systematic procedure for developing a Micro Aerial Vehicle (MAV), which is capable of autonomous flight in GPS-denied environments. This MAV is designed for a gross weight of 490 g and flight endurance of 8 minutes. The hardware structure (including the sensors, processors, and mechanical components), the software architecture (including operating system, navigation,...
A dual-core FPGA-based embedded system development platform named MorFPGA Duo is presented in this paper. The MorFPGA Duo platform adopts the modular design concept and is capable of a dual core employing the ARM Cortex A9, two channel SDI cameras with Full-HD resolution, versatile built-in peripherals and high expandability to satisfy users' eager needs for state-of-the-art research topics. This...
The prevailing security model for OSes focuses on isolating users from each other, however, the changing computing landscape has led to the extension of traditional access control models for single-user devices. Modern OSes for mobile devices such as iOS and Android have taken the opportunity provided by these new platforms to introduce permission systems in which users can manage access to sensitive...
This paper presents a system for 3D reconstruction. It is composed of both hardware and software system: Stereo-View Input System and 3D Reconstruction System. Stereo-View Input System is a portable platform. It is based on an ARM processor, which can be implemented on most phones and pads as an extra or embedded device with Android. 3D Reconstruction System starts with the pinhole model and essential...
As small unmanned aircraft systems become increasingly affordable, reliable, and formally recognized under federal regulation, they become increasingly attractive as novel platforms for civil applications. This paper details the development and demonstration of both fixed-wing and rotorcraft-based unmanned systems for infrastructure assessment tasks. Tasks such as inspecting pavement condition and...
ARM embedded system can achieve a higher degree of integration, it has the advantages of small volume and low power consumption, which has gradually become one of the important products of information industry. In this paper, we introduce the overall design scheme of ARM and software. We provide an efficient solution to meet the request of even text materials when using camera. To turn on the camera...
This paper presents the autonomous control of a fully customized quadrotor MAV in GPS-denied environments based on onboard visual odometry. To achieve the best integration and efficiency, key modules of the MAV hardware system have been investigated and optimized iteratively, inclusive of mechanical frame, propulsion system, flight controller and the visual sensor. An optical-flow module is developed...
We present an efficient open-source implementation of a novel video alignment algorithm, based on low dimensionality frame matching and the recently introduced ECC image registration algorithm.
Google Cloud Vision is an image recognition technology that allows us to remotely process the content of an image and to retrieve its main features. By using specialized REST API, called Google Cloud Vision API, developers exploit such a technology within their own applications. Currently, this tool is in limited preview and its services are accessible for trusted tester users only. From a developer's...
Flashover occurs more easily on contaminated transmission line insulators, which causes great economic losses and has bad effects on power system stability. An accurate and safe detection of insulator contamination grades is required. In this paper, a new method is proposed to discriminate insulator contamination grades using visible light images. Firstly, ZSW-10/4 insulators are smeared in different...
In a search and rescue scenario, an expeditious response is critical since the radius of the search area increases by roughly 3 km per hour while the life expectancy of the lost individual decreases. To find the object of the search as quickly as possible, the incident commander creates an overlay probability map identifying high priority search areas and develops a search plan that allocates search...
Serial number is a unique number given to a product which can be used for product identification and inventory management. Information about the product may be its manufacturing date, expiry date, place of manufacture and so on. Some companies use serial numbers to keep track on the number of products which a retailer is authorized to sell. Thus serial number identification becomes an important part...
This paper is motivated by work on a real-time Android navigation system using accelerometer, gyroscope, and camera data. We observed that our attempts at combining data from these different sensors yielded time series with jitter, i.e., inaccurate timestamps, that negatively affected program correctness and reliability. Thus, the aim of this paper is to help Android developers anticipate, assess,...
This live demonstration shows an FPGA-based real-time hand sign recognition system. The system consists of a feature vector extraction and a vector classifier. The SOM-Hebb classifier network is used for the classification network, which is made of a self-organizing map and a feed-forward neural network. Training of the SOM-Hebb classifier is carried out by an off-chip computer. In this demonstration,...
We present a video dataset created for the needs of a research project that aims at developing vision-based techniques that assist the social interaction of a blind person. Two totally blind users have acquired the sequences, using at the same time a glasses-mounted camera and a necklace-mounted one. The video sequences were acquired in different environments, selecting conditions in which a user...
The article describes the architecture and use cases of the vehicles external control unit (BBCU — BODY & BOARD CONTROL UNIT) for the vehicle communication within global traffic systems including traffic security and safety (Car2Car, Car2Infrastructure concepts supported), IoT architectures as well as Smart Cities applications. The BBCU is an embedded system optionally supplemented with graphical...
This paper presents a novel liveness detection method that exploits the acquisition workflow for iris biometrics on smartphones using a hybrid visible (RGB)/near infra-red (NIR) sensor. These devices are able to capture both RGB and NIR images of the eye and iris region in synchronization. This multi-spectral information is mapped into a discrete feature space. An intermediate classifier which uses...
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