Space object, high-resolution, optical imaging simulation of space-based systems

2012 ◽  
Author(s):  
Haopeng Zhang ◽  
Wei Zhang ◽  
Zhiguo Jiang
Keyword(s):  
High Resolution ◽  
Optical Imaging ◽  
Space Object ◽  
Imaging Simulation

VIS-NIR LED Illumination in Backside Circuit Edit and Optical Probing Applications

2012 ◽  
Author(s):  
Shida Tan ◽  
Richard H. Livengood ◽  
Dane Scott ◽  
Roy Hallstein ◽  
Pat Pardy ◽  
...  
Keyword(s):  
High Resolution ◽  
Image Quality ◽  
Optical Imaging ◽  
Narrow Band ◽  
Light Emitting Diode ◽  
Air Gap ◽  
Optical Image ◽  
Proof Of Concept ◽  
Light Emitting ◽  
Optical Probing

Abstract High resolution optical imaging is critical in assisting backside circuit edit (CE) and optical probing navigation. In this paper, we demonstrated improved optical image quality using VIS-NIR narrow band light emitting diode (LED) illumination in various FIB and optical probing platforms. The proof of concept was demonstrated with both common non-contact air gap lenses and solid immersion lenses (SIL).

An Optical Imaging Simulation Method for Inverted Microscope and its Application in Automatic Cell Manipulation

2012 ◽  
Vol 490-495 ◽  
pp. 1981-1985
Author(s):  
Qi Liang Du ◽  
Xue Song Lan ◽  
Ling Yuan ◽  
Rui Liang
Keyword(s):  
Optical Imaging ◽  
Forward Direction ◽  
Simulation Method ◽  
Considerable Effect ◽  
Cell Manipulation ◽  
Egg Cell ◽  
Virtual Image ◽  
Sensing Element ◽  
Inverted Microscope ◽  
Imaging Simulation

For a further understanding of the features of objects in the microscopic image during automatic cell manipulation, an optical imaging simulation method for inverted microscope was studied, with an assumption of parallel rays of light. The proposed method calculated the forward direction of every ray starting from the source until it reached the lens or disappeared from the effective range. A virtual image could be generated by an imitation of a CCD sensing element. Emulations in cases of a micro glass bar, a micro pipette and an egg cell which were commonly encountered in cell manipulation were carried out, whose gray-level virtual images were contrasted to real ones for verification. Results showed a considerable effect of the proposed simulation method

Pilot Test of the Trisensor, A New Generation Sonar Sensory Aid

1983 ◽  
Vol 77 (9) ◽  
pp. 446-449 ◽  
Author(s):  
Randolph D. Easton ◽  
Richard M. Jackson
Keyword(s):  
Pilot Study ◽  
High Resolution ◽  
Object Localization ◽  
Pilot Test ◽  
Angle Error ◽  
Space Object ◽  
Near Space ◽  
Side Channels ◽  
Center Channel ◽  
New Generation

This report describes the results of a pilot study undertaken to assess systematically the usability of the Trisensor in near space, object localization tasks. In general, findings support the contention that the high resolution, center channel reduces the degree of angle error when reaching for targets in near space. It was also found that the degree of angle error associated with the binaural side channels could be reduced if targets were moved from the periphery into place during localization.

High-resolution Optical Imaging for Deep-water Archaeology

2021 ◽  
pp. 30-40
Author(s):  
Hanumant Singh ◽  
Christopher Roman ◽  
Oscar Pizarro ◽  
Brendan Foley ◽  
Ryan Eustic ◽  
...  
Keyword(s):  
High Resolution ◽  
Optical Imaging ◽  
Deep Water

Optical imaging with a high-resolution microendoscope to identify sinonasal pathology

2018 ◽  
Vol 39 (4) ◽  
pp. 383-387 ◽  
Author(s):  
Sarah M. Kidwai ◽  
Arjun K. Parasher ◽  
Victor J. Schorn ◽  
Elizabeth G. Demicco ◽  
Rebecca Richards-Kortum ◽  
...  
Keyword(s):  
High Resolution ◽  
Optical Imaging

High-resolution optical imaging of the 'Frosty Leo' nebula

1994 ◽  
Vol 106 ◽  
pp. 736 ◽  
Author(s):  
Philip P. Langill ◽  
Sun Kwok ◽  
Bruce J. Hrivnak
Keyword(s):  
High Resolution ◽  
Optical Imaging

Intraoperative optical imaging of intrinsic signals: a reliable method for visualizing stimulated functional brain areas during surgery

2013 ◽  
Vol 119 (4) ◽  
pp. 853-863 ◽  
Author(s):  
Stephan B. Sobottka ◽  
Tobias Meyer ◽  
Matthias Kirsch ◽  
Edmund Koch ◽  
Ralf Steinmeier ◽  
...  
Keyword(s):  
High Resolution ◽  
Optical Imaging ◽  
Median Nerve ◽  
Somatosensory Cortex ◽  
Blood Volume ◽  
Brain Areas ◽  
Camera System ◽  
Functional Brain ◽  
Brain Functions ◽  
Stimulation Of

Object Intraoperative optical imaging (IOI) is an experimental technique used for visualizing functional brain areas after surgical exposure of the cerebral cortex. This technique identifies areas of local changes in blood volume and oxygenation caused by stimulation of specific brain functions. The authors describe a new IOI method, including innovative data analysis, that can facilitate intraoperative functional imaging on a routine basis. To evaluate the reliability and validity of this approach, they used the new IOI method to demonstrate visualization of the median nerve area of the somatosensory cortex. Methods In 41 patients with tumor lesions adjacent to the postcentral gyrus, lesions were surgically removed by using IOI during stimulation of the contralateral median nerve. Optical properties of the cortical tissue were measured with a sensitive camera system connected to a surgical microscope. Imaging was performed by using 9 cycles of alternating prolonged stimulation and rest periods of 30 seconds. Intraoperative optical imaging was based on blood volume changes detected by using a filter at an isosbestic wavelength (λ = 568 nm). A spectral analysis algorithm was used to improve computation of the activity maps. Movement artifacts were compensated for by an elastic registration algorithm. For validation, intraoperative conduction of the phase reversal over the central sulcus and postoperative evaluation of the craniotomy site were used. Results The new method and analysis enabled significant differentiation (p < 0.005) between functional and nonfunctional tissue. The identification and visualization of functionally intact somatosensory cortex was highly reliable; sensitivity was 94.4% and specificity was almost 100%. The surgeon was provided with a 2D high-resolution activity map within 12 minutes. No method-related side effects occurred in any of the 41 patients. Conclusions The authors' new approach makes IOI a contact-free and label-free optical technique that can be used safely in a routine clinical setup. Intraoperative optical imaging can be used as an alternative to other methods for the identification of sensory cortex areas and offers the added benefit of a high-resolution map of functional activity. It has great potential for visualizing and monitoring additional specific functional brain areas such as the visual, motor, and speech cortex. A prospective national multicenter clinical trial is currently being planned.

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