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Accurate, compact thermal sensors are desirable in many applications, including on-chip temperature monitoring for processors with dynamic throttling and reliability management. Modern thermal sensors are limited in either area, robustness, or accuracy. This work sidesteps strong linearity requirements for reference and PTAT elements in the sensor by performing a higher-order fitting of more relaxed...
A simple and effective method to extend the characteristic basis function pattern (CBFP) method to multiple frequencies is presented. Transformation matrices are generated from simulated basis functions at each frequency of interest. By computing model coefficients, by means of a singular value decomposition (SVD) to enhance accuracy over a wide bandwidth, using a few directional measurements of any...
By using online measurement and inspection, the efficiency of production in product manufacturing can be greatly improved. However, most of the available methods for the measurement and inspection of parts are offline in practice, which results in either time consuming or expensive inefficiencies. In this paper, a vision-based inspection approach is proposed, which is designed to measure and inspect...
Brain-machine interfaces (BMI) allow to decode motor commands from paralyzed patients' brains and use those commands with a rehabilitative or assistive purpose. However, brain non-stationarities can affect BMI performance over time in multi-session interventions. The amount and type of data used for calibration may play an important role on the posterior decoding performance. This paper studies six...
The author has introduced a generic method for photogrammetric survey using a multi-rotor unmanned aerial vehicle (UAV) for mapping a simulated model and slope area. The objective of this study is to assess the capabilities of UAV for slope mapping. This study only concentrates on multi-rotor UAV, which is known as Hexacopter. Several ground control points (GCP) and checked point (CP) were established...
Array jet dispensing technique plays an important role in micro assembly, especially for parts with different materials. An automatic array jet dispensing system was developed in this paper for micro inertial devices assembly. In order to have uniform original drop position of the adhesive array and easy monitoring, a machine vision module was integrated. The image processing and coordinate transformation...
As wireless networks shift towards denser deployments, simulations take longer time to run and consume more resources. Simulation of the physical (PHY) layer is particularly time consuming and, as such, its implementation requires the use of abstracted models with low computational complexity, in order to provide accurate results in reasonable time. Although Mutual Information Effective SINR Mapping...
Camera Calibration is a crucial task in computer vision. It aims to get internal and external parameters of camera from images. Currently, classical calibration techniques are widely used in measurement and monitor, especially the method proposed by Zhang Z.Y. In this paper, it is demonstrated that classical method is rather inaccurate in some certain conditions-different distance. Experiment results...
This paper addresses the results of the instrument and product performance verification, radiometric and geometric calibration achieved during the since commissioning and routine phase.
On-orbit geometric calibration is a critical and essential step to guarantee the high geometric positioning accuracy of high-resolution optical satellite imagery. In this paper, we first review and summarize the on-orbit geometric calibration methods for high-resolution optical satellite and then analyze their advantages and disadvantages. Finally, we present our perspective on on-board geometric...
ALOS-2 satellite has been successfully launched by JAXA on May 24th 2014, it is equipped with an L-Band (PALSAR-2) fully polarimetric SAR. Many improvements have been made with respect to the former ALOS satellite: the exploitation of a dual receiving antenna allows to broaden the imaged swath whereas spotlight mode ensures a very high resolution on a specific location. The revisit time has been lowered...
For validating the polarimetric & polarimetric-interferometric SAR modelling of vegetation, involved in biomass or surface moisture estimation at large scale, very high resolution polarimetric SAR acquisition on representative vegetated area could be useful. At resolution close to the wavelength such as 4 cm at X-band, the different scattering mechanisms can be spatially resolved. Several recent...
The accuracy of COSMO-SkyMed DEMs is investigated using StripMap mode images, acquired during the interferometric Tandem-Like mission characterized by a temporal baseline of 24 hours and spatial baselines maintained around 150–200 m. Some Couples of both Ascending and Descending interferometric pairs, acquired on selected test sites located in the California have been processed using the open source...
Autonomous mobile machines use onboard sensors for navigation and obstacle avoidance. The accuracy of the sensor data in global frame is however dependent on the localization accuracy of the machine. Simultaneous localization and mapping algorithms (SLAM) are widely used with 3D laser scanners for mapping the world. They use scan matching algorithms to solve the accuracy problem by matching prior...
The TanDEM-X mission aims the generation of an accurate global Digital Elevation Model (DEM). On the other hand, due to their flexibility regarding baseline configuration, frequency of acquisition, time and revisit time, airborne SAR interferometers remain viable for the generation of DEMs with very high vertical and horizontal accuracies at a local scale. In this paper, we present an experiment demonstrating...
TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurements) is an Earth observation radar mission that consists of a SAR interferometer built by two almost identical satellites flying in close formation [1]-[4]. With a typical separation between the satellites of 120 to 500 m a global Digital Elevation Model (DEM) with 2 m relative height accuracy at 12 m posting is being generated. While the...
An approach to create fixation density maps(FDM) for stereoscopic images is proposed in this paper, overcoming the shortages of current methods. A new representation of stereoscopic images like Computed Tomography(CT) is used, which can show more information such as depth and discomfort zone. Apart from this, we follow the protogenetic 2D calibration of eyetracker by a 3D offline calibration to gain...
The long and complicated preparing procedures, including placement of surface electromyography (sEMG) sensors and intensive training phase before the usage of myoelectric control interface, are key factors inhibiting the extensive applications of sEMG based human-machine interface (HMI). This paper presents an 8-channel sEMG signal acquisition armband (called SJT-iMyo), with the aim of integrating...
The Japan Aerospace Exploration Agency is generating the global digital elevation/surface model (DEM/DSM) and ortho-rectified image (ORI) using the archived data of the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) onboard the Advanced Land Observing Satellite (ALOS, nicknamed “Daichi”), which was operated from 2006 to 2011. The overview and the processing status of the global...
This paper discusses the design and implementation of a light-weight thermal camera payload for small fixed-wing UAVs with a pan/tilt mechanism and georeferencing based on a simple autopilot's GPS and IMU. Further, an effective and simple method to accurately calibrate a thermal camera is developed and tested. In order to evaluate the accuracy of the georeferencing algorithm, a test flight was conducted...
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