The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We propose an occlusion compensation method for optical see-through head-mounted displays (OST-HMDs) equipped with a singlelayer transmissive spatial light modulator (SLM), in particular, a liquid crystal display (LCD). Occlusion is an important depth cue for 3D perception, yet realizing it on OST-HMDs is particularly difficult due to the displays' semitransparent nature. A key component for the occlusion...
Three dimensional (3D) vision applications have drawn more attention nowadays and many products are entering the mass market. View interpolation is a crucial step to generate intermediate viewpoints from reference images. However, it is still challenging to achieve good performance in both processing speed and image quality for various 3D applications. In this paper, a hardware-compatible view interpolation...
Aerial robots are becoming popular among general public, and with the development of artificial intelligence (AI), there is a trend to equip aerial robots with a natural user interface (NUI). Hand/arm gestures are an intuitive way to communicate for humans, and various research works have focused on controlling an aerial robot with natural gestures. However, the techniques in this area are still far...
This paper presents a low-cost and portable microscope camera with high definition multimedia interface (HDMI) based on Hi3518E chip. Aiming at the high demand of the microscope camera for the color restoration, a fast white balance method based on R, G, B statistical information and color correction matrix is proposed in this paper. Result of experiment shows that the proposed algorithm gets good...
Surveillance denotes close observation and monitoring of behavior, activities, or other dynamic information, of people or objects for the purpose of influencing, managing, directing, or protecting them. With advancement in technology and emerging of various intelligent prediction techniques, it has now become possible to imbibe the traditional video surveillance with intelligence to identify or take...
To achieve the goal of frontal vehicle detection in night-driving condition, we propose an effective method to detect the red taillights of vehicles. The challenge is that the taillight images captured with automatic exposure typically are overexposed, which makes red color segmentation often erroneous. Instead of customizing the camera hardware to tackle this problem, we combine morphological and...
This paper presents a method for real-time detection and tracking of the human face. This is achieved using the Raspberry Pi microcomputer and the Easylab microcontroller as the main hardware with a camera mounted on servomotors for continuous image feed-in. Real-time face detection is performed using Haar-feature classifiers and ScicosLab in the Raspberry Pi. Then, the Easylab is responsible for...
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...
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...
Due to gesture recognition, smart TVs that are controlled by simple motions have been steadily developed and improved. Important problems, however, remain unresolved. In comparison to low-price remote controllers, it is difficult to achieve competitive prices and performances for diverse and complex gesture-recognition systems with the use of costly 3D motion sensors. This study therefore aims to...
We present an innovative L-shaped trifocal system involving a high-end main camera with a compact assistant stereo rig attached to it. The system can accurately reconstruct dense disparity information which enables the creation and processing of high-quality 3D film content based on virtual view synthesis. In particular, our system provides compactness and increased flexibility in the spatial camera...
Recent technical advances in Unmanned Aerial Vehicles (UAV) made a realm of applications possible. In this paper we focus on the application of following a walking pedestrian in real-time, using optimised pedestrian detection and object tracking. For this we use an on-board embedded system, offering an optimal ratio of computational power and weight. We extend the commonly used ground plane estimation...
In tele-presence systems, direct face-to-face contact, is essential for emotional communication as it carries non-verbal clues. In commercial products, face-to-face contact is approximated by using either a large semi-transparent mirror to project an image of the remote participant and capture the local participant image by using a video camera aiming at the centre of the screen or by using low profile...
This paper presents an efficient hardware architecture to perform the real-time correction of the barrel distortion in wide-angle cameras. Applied to the single-sensor cameras employing the Bayer pattern as the color filter array (CFA), the proposed architecture performs the backward mapping process once for each pixel location in the Bayer pattern and the sub-pixel image resampling process for each...
There always exists an intractable challenge in three-dimensional (3D) object surface measurement that it is difficult to deal with the scene with a large range reflectivity or specular reflection. This paper presents a novel 3D measurement technique: high dynamic range saturation intelligence avoidance (HDRSIA), which is based on the multi-exposure principle. This method divides the object surface...
Chroma-key is a robust and important technique for processing image or video. This technique gives immersive feedback on Video, TV production and weather forecast. Chromakey method and hardware architecture for Chroma-key effect in real-time using Xilinx system generator is demonstrated in this paper. VLSI architecture is proposed for this method, which is implemented on FPGA based on K-means method...
This paper describes the development activity on a low cost high performance fruit grader employing distributed network architecture to interface the GigE machine vision camera and field IO devices. The fruits are transported over a dynamic conveyor and images are synchronously captured for frame analysis during triggered events. Geometrical features such as diameter, perimeter, area and circularity...
We present a new method for correcting over-exposed areas in images. The method takes advantage of the strong correlation between the RGB color channels and relies on the observation that in images the RGB components are often not over-exposed at the same position. Our solution operates on line profiles, making it ideally suited for hardware implementations. In addition to its low computational complexity,...
In this paper we present a biologically inspired rotationally-invariant end-to-end recognition system demonstrated in hardware with a bitmap camera and a Field Programmable Gate Array (FPGA). The system integrates the Ripple Pond Network (RPN), a neural network that performs image transformation from two dimensions to one dimensional rotationally invariant temporal patterns (TPs), and the Synaptic...
A computer machine vision system that can be used for automatic high-speed fruit sorting and grading is proposed. The objective of the project is to develop the advanced quality control inspection system makes use of distributed network architecture to interface the camera unit to a computer system through GigE LAN environment in a flexible way. The development work activity involves in dynamic capturing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.