Results 21 to 30 of about 3,105,384 (252)
Accurate and reliable segmentation of the optic disc in digital fundus images [PDF]
, 2014 We describe a complete pipeline for the detection and accurate automatic segmentation of the optic disc in digital fundus images. This procedure provides separation of vascular information and accurate inpainting of vessel-removed images, symmetry-based ...
Giachetti, Andrea +4 more
core +1 more source
Nihon Kikai Gakkai ronbunshu, 2015 Objective lens actuators are mechanical devices for positioning the objective lens in optical disc drives. The moving part in the objective lens actuator, which is comprised of the objective lens, a holder holding the objective lens, and coils attached ...
Katsuhiko KIMURA +4 more
doaj +1 more source
Heat- and humid-proof adhesive joints for optical pickup
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019 Our previously proposed method for arranging adhesive joints for an optical assembly was adopted to resist long-term exposure to severe environments.
Manabu OCHI +2 more
doaj +1 more source
Analysis of beam spot deviation considering vibration of components in optical pickup
Mechanical Engineering Journal, 2018 An optical disc drive uses an optical pickup to read and write data by focusing a laser beam on the data plane of a rotating disc. The pickup is required to keep the beam spot on the current track.
Manabu OCHI +2 more
doaj +1 more source
Age effect on retina and optic disc normal values [PDF]
, 2005 Purpose: To investigate retinal thickness and optic disc parameters by the Retinal Thickness Analyzer (RTA) glaucoma program in older normal subjects and to determine any age effect.
Chryssafis, C. +5 more
core +1 more source
Advances in Mechanical Engineering, 2014 In this paper, a novel thin-disc piezoelectric actuator, 4-9-9-14 piezoelectric actuator, is used to construct and drive the micro/nanometer level biaxial piezoelectric actuated stage.
Shann-Chyi Mou
doaj +1 more source
Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) [PDF]
, 2006 A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus +9 more
core +1 more source
Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]
, 2007 Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll +13 more
core +1 more source
Healthcare Technology Letters, 2018 Accurate optic disc (OD) segmentation is an important step in obtaining cup-to-disc ratio-based glaucoma screening using fundus imaging. It is a challenging task because of the subtle OD boundary, blood vessel occlusion and intensity inhomogeneity.
Rashmi Panda, N.B. Puhan, Ganapati Panda
doaj +1 more source
Results of the Optical Downlink Experiment KIODO from OICETS Satellite to Optical Ground Station Oberpfaffenhofen (OGS-OP) [PDF]
, 2007 Optical LEO downlinks from the Japanese OICETS to the optical ground station built by the German Aerospace Center (DLR) near Munich have been performed. This was the first optical LEO downlink on European grounds.
Perlot, Nicolas +13 more
core +1 more source