- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Determining Line-Crossing Sequences Between Laser Printing and Writing Pen Using Coaxial Light
摘要： Determining the application sequence of hand-written pen ink and printer toner lines has attracted significant interest in questioned document examination. This study uses coaxial light to determine line-crossing sequences, with intersections observed under a VSC600 forensic document workstation and a Leica M205A Stereo-microscope. Results show that reflected light at intersections and color contrast between intersections and nonintersections was observed when a hand-written ink line passes over a toner line, while a toner line passing over a written line appeared dull, with no color contrast. The procedure was tested under a range of conditions, such as types of writing pens and laser printers, the writer, and writing pressure, with the latter playing an important role in the evaluation. To validate the results, a 90% detection rate and 98% accuracy rate were achieved from 50 samples of blind testing, which is more effective than optical microscopy.
关键词： laser printing,coaxial light,reflected light,questioned document examination,writing pen,sequence of intersecting lines
更新于2025-09-23 15:21:01
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Handbook of Exoplanets || Characterization of Exoplanets: Secondary Eclipses
摘要： When an exoplanet passes behind its host star, we can measure the time of the occultation, its depth, and its color. In this chapter we describe how these observables can be used to deduce physical characteristics of the planet such as its averaged dayside emission, departures from uniform disk illumination, or a precise measurement of the orbital eccentricity. This technique became a reality in 2005; in this chapter we describe the basics of the technique, its main results in the last 12 years, and the prospects for the years to come. This chapter includes a table with references to all published detections of secondary eclipses until December 2017.
关键词： reflected light,exoplanets,orbital eccentricity,thermal emission,secondary eclipses
更新于2025-09-23 15:21:01
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Synchronous full-field measurement of temperature and deformation based on separated radiation and reflected light
摘要： Optical method has been playing an important role in measuring temperature and deformation at elevated temperatures. Here we propose a simple and effective iterative algorithm to realize accurate and simultaneous measurement of the full-field temperature and deformation of specimens subjected to flame heating at temperatures up to 1000 °C. The algorithm separates the optical images of specimen surface into radiant and reflected parts. The radiant part is used to calculate the full-field temperature by an improved two-color method, and the reflected part is used to obtain the deformation of the specimen surface based on high-temperature digital image correlation method. Experimental validation shows that the proposed method can effectively eliminate the mutual interference between the radiation and reflected light, displaying great potential for synchronous measurement of temperature and deformation with sufficient accuracy by using one camera.
关键词： Two-color method,Synchronous temperature and deformation measurement,Iterative algorithm,Separation of radiation and reflected light
更新于2025-09-19 17:15:36
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[IEEE 2018 Seventh Balkan Conference on Lighting (BalkanLight) - Varna, Bulgaria (2018.9.20-2018.9.22)] 2018 Seventh Balkan Conference on Lighting (BalkanLight) - LIGHT POLLUTION AND ITS PRICE
摘要： Light and lighting are the civilization choice of people. The accessibility of lighting has created conditions for unlimited practical use during the dark period of the day. Those circumstances have led to the disturbance of the natural alternation of light and dark period. Hence, the night is becoming a day. Contemporary lighting systems belong to the group of technical systems that bring certain harmful effects on the external and internal environment, respectively on people and the living nature. One of them is the result of the well-known light pollution. The development of the contemporary light-based techniques and technologies, in addition to the unconditionally beneficial consequences, has led to the violation of the reasonable normal and socially acceptable limits by the scattering of the artificial light and especially the uncontrolled overlit areas. This is also a “scatter” of electrical energy.
关键词： Light Pollution,Light Distribution,Price,Architectural Lighting,Luminaire,Directed аnd Reflected Light to the Sky,Lighting,Measures,Lighting Environment,ES-D-IA,Street Lighting,Average Annual Net Amount оf Light
更新于2025-09-09 09:28:46