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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...
The existing AR indoor registration technologies based on hardware often have the disadvantage of low registration accuracy. To solve the problem, a new indoor AR registration technology based on iBeacon is proposed in this paper. Firstly, the coordinates of the phone are calculated based on the data received by iBeacons. Secondly, the 3D directions of the phone are obtained based on the acceleration...
Indoor exploration based on panoramic images has been of interest in both navigation and visualization scenarios of mobile intelligent systems, becoming an appealing research topic in hardware design and computational algorithms. A detailed profile of an indoor scene further used for 3D reconstruction purposes or visualization requires an accurate high-resolution rendering from multiple camera shots...
In this paper, aiming at the problem of imprecise localization and perturbation interference in the field of traditional large screen, large screen interactive system with projection technology is designed based on the affine transformation algorithm to realize the precise interactive region coordinate positioning. Any wall touch system of human-computer interaction has been obtained by the analysis...
Time-of-Flight 3D imaging, using the indirect measuring method that employs photonic mixing devices, increases in popularity. This is due to the recent availability of accurate and miniaturized Time-of-Flight cameras that can be integrated into small embedded devices. However, providing a system comprising a camera and hardware-accelerated processing, which is useable for various application types...
In this paper, an innovative camera synchronization technique is presented, enabling the combination of two 1 mm $\times 1$ mm sized cameras to produce a real-time 3-D image. The technique developed and implemented on an FPGA platform with an USB3 interface, allows minimal error synchronization of up to an eight individual self-timed cameras. Typically, a small self-timed camera modules do not allow...
A FPGA-based embedded system development platform with dual-camera support, 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...
Human action recognition (HAR) is an important topic in computer vision having a wide range of applications: health care, assisted living, surveillance, security, gaming, etc. Despite significant amount of work having been conducted in this area in recent years, the execution speed still limits real-time applications. Moreover, it is highly desirable to have the compute-intensive feature extraction...
We present a new method to correct perspective and geometric distortions as well as to segment and refine page frames, presented in document images of paperback books. The proposed digitization process of paperback books is just like the process of scanning. Unlike traditional methods, our method is independent of document contents and does not need additional hardware or multiple images or luminance...
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.
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...
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 off-the-shelf, low-latency Optical See-through Head-Mounted Displays (OST-HMD) for Augmented Reality (AR). Temporally consistent visualization is crucial for realizing immersive AR experiences. This is challenging since it requires both accurate head-tracking and low-latency rendering of AR content. Building a system which meets both constraints usually requires experts on computer vision/graphics...
We present four raycast-based techniques that determine the transformation between a depth camera's coordinate system and the coordinate system defined by a rectangular surface. In addition, the surface's dimensions are measured. In contrast to other approaches, these techniques limit additional hardware requirements to commonly available, low-cost artifacts and focus on simple non-laborious procedures...
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...
Imaging has become an indispensable tool in modern medicine. Various powerful and expensive platforms to study medical imaging applications appear in recent years. In this article, we design and propose a Visual Processing System (ViPS) that processes medical imaging applications efficiently. ViPS provides a user-friendly programming environment and high-performance architecture to perform image analysis,...
Computer vision is becoming more and more important in the fields of consumer electronics, cyber-physical systems, and automotive technology. Recognizing and classifying one's environment reliably is imperative for safety-critical applications, as they are omnipresent, e.g., in the automotive or aviation domain. For this purpose, the Time-of-Flight imaging technology is suitable, which enables robust...
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...
Live results obtained from the first real-time high-resolution free viewpoint synthesis hardware that utilizes three-camera disparity estimation are presented. The proposed hardware generates high-quality free viewpoint video at 55 frames per second on a Virtex-7 FPGA at a 1024×768 XGA video resolution for any horizontally-aligned arbitrary camera positioned between the leftmost and rightmost physical...
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...
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