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A variant of a network telescope is a sparse darknet, or greynet, consisting of a region of IP address space that is sparsely populated with "darknet" addresses interspersed with active (or "lit") IP addresses. [2] These include a greynet assembled from 210,000 unused IP addresses mainly located in Japan. [6]
The Dark Energy Survey (DES) is an astronomical survey designed to constrain the properties of dark energy.It uses images taken in the near-ultraviolet, visible, and near-infrared to measure the expansion of the universe using Type Ia supernovae, baryon acoustic oscillations, the number of galaxy clusters, and weak gravitational lensing. [1]
The first centralized IP camera, the AXIS Neteye 200, was released in 1996 by Axis Communications. [3] Although the product was advertised to be accessible from anywhere with an internet connection, [4] the camera was not capable of streaming real-time video, and was limited to returning a single image for each request in the Common Intermediate Format (CIF).
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The Speed Graphic was a press camera produced by Graflex in Rochester, New York. Although the first Speed Graphic cameras were produced in 1912, production of later versions continued until 1973; [ 2 ] with significant improvements occurring in 1947 with the introduction of the Pacemaker Speed Graphic (and Pacemaker Crown Graphic, which was one ...
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In 2018, Dahua acquired security video camera company Lorex. [11] [12] By 2019, following the rollout of the Chinese government's "Sharp Eyes" surveillance program, Dahua had grown to become the second largest video surveillance company in the world. [5] Dahua is a provider of a suite of digital Smart City products which are marketed for "Safe ...
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