Results 41 to 50 of about 1,327,523 (319)
A Fast Star-Detection Algorithm under Stray-Light Interference
Photonics, 2023 The interference caused by stray light leads to the invalid attitude of star sensors in orbit, thus affecting the attitude control of satellites. In order to overcome this problem, this paper proposes a fast star-detection algorithm with strong stray ...
Kaili Lu +5 more
doaj +1 more source
Surface projection for mixed pixel restoration [PDF]
, 2009 Amplitude modulated full-field range-imagers are measurement devices that determine the range to an object simultaneously for each pixel in the scene, but due to the nature of this operation, they commonly suffer from the significant problem of mixed ...
Cree, Michael J. +3 more
core +2 more sources
Sun Sensor Based on a Luminance Spiking Pixel Array [PDF]
, 2017 We present a novel sun sensor concept. It is the very first sun sensor built with an address event representation spiking pixel matrix. Its pixels spike with a frequency proportional to illumination.
Carmona Galán, Ricardo +4 more
core +1 more source
Diffractive optics approach towards subwavelength pixels
, 2018 Pixel size in cameras and other refractive imaging devices is typically limited by the free-space diffraction. However, a vast majority of semiconductor-based detectors are based on materials with substantially high refractive index.
Fan, Bo +2 more
core +1 more source
Determination of optimal formats for digital image compression
Ingenius: Revista de Ciencia y TecnologíaSe concluye que independientemente de la herramienta que se utilice, es el formato de la imagen lo que influye en el tamaño final.& The objective was to determine the influence of different image formats and tools used for compression on the final ...
Abimael Adam Francisco Paredes +3 more
doaj +1 more source
Analysis of code levelling rods calibration accuracy applying covariance functions
Geodesy and Cartography, 2012 An analysis of code levelling rods calibration accuracy applying covariance functions theory is presented. Images of the coded rods are treated by the Matlab 7 computer program.
Jonas Skeivalas +3 more
doaj +1 more source
Missed by Filter Lists: Detecting Unknown Third-Party Trackers with Invisible Pixels [PDF]
Proceedings on Privacy Enhancing Technologies, 2018 Web tracking has been extensively studied over the last decade. To detect tracking, previous studies and user tools rely on filter lists. However, it has been shown that filter lists miss trackers.
Imane Fouad +3 more
semanticscholar +1 more source
Relevance of two manual tumour volume estimation methods for diffuse low-grade gliomas
Healthcare Technology Letters, 2018 Management of diffuse low-grade glioma (DLGG) relies extensively on tumour volume estimation from MRI datasets. Two methods are currently clinically used to define this volume: the commonly used three-diameters solution and the more rarely used software ...
Meriem Ben Abdallah +5 more
doaj +1 more source
Durable and programmable ultrafast nanophotonic matrix of spectral pixels
Nature NanotechnologyLocally addressable nanophotonic devices are essential for modern applications such as light detection, optical imaging, beam steering and displays. Despite recent advances, a versatile solution with a high-speed tuning rate, long-life durability and ...
Tingbiao Guo +7 more
semanticscholar +1 more source
Accuracy research on coded levelling staff using digital photos
Geodesy and Cartography, 2012 The article introduces accuracy research on coded levelling staff using digital photos. The principles of photogrammetry can be used for comparing the views of the etalon and meter to be calibrated.
Vladislovas Česlovas Aksamitauskas +1 more
doaj +1 more source