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As a key part of failure analysis function in semiconductor foundry industry, TEM micro-topography becomes more and more important while semiconductor devices' critical dimensions get smaller and smaller. And the FIB/TEM sample preparation technique takes the first priority to achieve high quality TEM pictures. Normally FIB operators have to avoid sample defects such as sample bending, poor thickness...
With the surge of realistic 3D contents, digital exhibition of a cultural artifact gets much attention as one of the major applications. However, in the case of conventional digital exhibition the sense of artificiality is still a challenge because virtual contents are represented through a flat display device that often neglects the differences in depth perception. To represent the cultural artifact...
RTI is an image-based rendering method which can represent the appearance of an object under varying illuminations. To create realistic synthetic-images using RTI, it is necessary to take dozens of images on a mounted camera with a calibrated point light source. Conventional RTI methods have proposed complex lighting systems in a hemispherical dome, or manually calibrate light poses using a reflective...
This paper presents the problem of robot deployment for a number of scattered tasks. We aim to minimize the duration it takes for all robots to reach their assigned task locations. In previous work, we have proposed a team composed of one carrier robot (CR) and several servant robots to accomplish the mission. Then we have suggested an algorithm that determines a path of the CR for an efficient deployment...
This paper reports on the design and performance of a terahertz (THz) linear camera with 50 pW/√Hz noise-equivalent power (NEP). This camera is sensitive to four bands of vertically and horizontally polarized THz radiation (0.22, 0.32, 0.42, and 0.52 THz). The heart of the camera is a diode-based focal plane array (FPA) that has a 10 nV thermal noise level and 1–2 kV/W sensitivity across the four...
Motivated by the 2013 International UAV Innovation Grand Prix (UAVGP), we design and implement a real-time vision system for an unmanned helicopter to transfer cargoes between two moving platforms fully autonomously. The key algorithms in the vision system include ellipse detection, ellipse tracking and single-circle-based pose estimation. Comprehensive experiments have verified the efficiency, accuracy...
In this paper a method for distant object recognition is proposed. We propose an iterative structure for distant object recognition using an active-zooming camera like PTZ camera. We adopt Graphcut-based segmentation algorithm, Grabcut, to our structure in order to select candidate regions for zooming and gazing. Grabcut is utilized through the modified strategy for our purpose. And we also propose...
We present a large-format, sub-millimeter-resolution, real-time focal plane array sensor for THz imaging. Each pixel in sensor array consists of THz antennas monolithically integrated with ultra-fast heterostructure backward diodes. The antennas are optimized for diffraction limited image resolution and conjugate impedance match for highest THz sensitivity. The camera is designed to cover the 0.6–1...
We propose a natural 3D scene generation method using a TOF camera and real light information. We can generate 3D human actor by capturing a depth and color image of human actor using a TOF camera which uses the IR sensor. But the acquisition is processed in an indoor environment due to the time and space constraints of capturing environments. In practice, a composition using a 3D human actor with...
We present a new method for fully automated video matting. This method uses depth information acquired by a depth camera to automatically compute trimaps. Trimaps segment an image into three nonoverlapping regions (foreground, background, and unknown) and generation of a highly accurate trimap is one of the most important tasks in natural alpha matting. We propose an adaptive approach to generate...
In the dome display environment, it is known that three-dimensional scene can be represented utilizing the effects of geometrical perspective and motion parallax effectively without using the stereo glasses. However, the creation of contents for the dome display is not easy, because it needs omni-directional images. In this study, we propose the layer based method to create the dome contents easily...
Research in the areas of localization, mapping and path planning for single mobile robots has been carried out extensively. Nevertheless, relatively little of its work is applied to multiple robot systems. Moreover, when these robots coexist with human, complex and unpredictable human environments make the above navigational tasks even more challenging. To address this problem we propose intelligent...
Distress inspection is an important task in pavement maintenance. Pavement inspection requires tremendous human resources, so many investigators start developing automatic and robotic inspection methods to increase the efficiency and accuracy. However, the systems they developed are applicable for network-level inspection (large areas, long-distance) but too expensive or too big for project-level...
This paper describes the development of an Unmanned Aerial Vehicle (UAV) with the aid of a vision processing system for indoor navigation. A co-axial radio-controlled (RC) helicopter is upgraded with a customized on-board avionics system which include two Gumstix Linux computer systems as the on-board processors. A camera module is used to capture real time video during the flight to perform real...
In this paper, we present a systematic design and implementation of a robust real-time embedded vision system for an unmanned helicopter for ground target seeking and following. The on-board software system is developed based on a multithread technology capable of coordinating multiple tasks. To realize the autonomously ground target seeking and following, a sophisticated vision algorithm is proposed...
Determining the motion of an unmanned aerial vehicle in GPS-denied environments is a challenging work. In this paper, we present a systematic design and implementation of a vision aided motion estimation approach for an unmanned helicopter in such a condition. A hierarchical vision scheme is proposed to detect a structured landmark, and find the correspondence between the 3D reference points and the...
Three-dimensional (3D) TV is considered as the next-generation broadcasting service. In this paper, we propose a new scheme to generate 3D video contents using a time-of-flight (TOF) range sensor for the 3DTV service. TOF sensors are a relatively novel technology allowing for the real-time capture of both photometric and geometric scene information. In this work, in order to generate natural 3D video,...
The research field on intelligent environments that consist of many distributed sensors and robots has been expanding. An intelligent environment is the space where we can easily interact with computers and robots. And we can get useful service from them. In such an environment, location information is very important. In order to achieve that, multiple camera system is promising for seamless object...
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