Test results from an imager for scenes with high dynamic range and low light levels

2010 ◽  
Author(s):  
D. P. Osterman ◽  
W. Good ◽  
R. Philbrick ◽  
L. Schneider ◽  
P. Johnson ◽  
...  
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Test Results ◽  
Low Light ◽  
Light Levels ◽  
High Dynamic

HDR4CV: High Dynamic Range Dataset with Adversarial Illumination for Testing Computer Vision Methods

2021 ◽  
Author(s):  
Param Hanji ◽  
Muhammad Z. Alam ◽  
Nicola Giuliani ◽  
Hu Chen ◽  
Rafał K. Mantiuk
Keyword(s):  
Computer Vision ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
Detection Methods ◽  
Uniform Illumination ◽  
Low Light ◽  
Benchmark Datasets ◽  
High Dynamic ◽  
Preliminary Study ◽  
Additional Reference

Benchmark datasets used for testing computer vision (CV) methods often contain little variation in illumination. The methods that perform well on these datasets have been observed to fail under challenging illumination conditions encountered in the real world, in particular, when the dynamic range of a scene is high. The authors present a new dataset for evaluating CV methods in challenging illumination conditions such as low light, high dynamic range, and glare. The main feature of the dataset is that each scene has been captured in all the adversarial illuminations. Moreover, each scene includes an additional reference condition with uniform illumination, which can be used to automatically generate labels for the tested CV methods. We demonstrate the usefulness of the dataset in a preliminary study by evaluating the performance of popular face detection, optical flow, and object detection methods under adversarial illumination conditions. We further assess whether the performance of these applications can be improved if a different transfer function is used.

scholarly journals Burst photography for high dynamic range and low-light imaging on mobile cameras

2016 ◽  
Vol 35 (6) ◽  
pp. 1-12 ◽  
Author(s):  
Samuel W. Hasinoff ◽  
Dillon Sharlet ◽  
Ryan Geiss ◽  
Andrew Adams ◽  
Jonathan T. Barron ◽  
...  
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Low Light ◽  
Mobile Cameras ◽  
High Dynamic

scholarly journals High dynamic range and high dispersion stability of a magnetorheological grease damper for semi-active vibration suppression

2021 ◽  
pp. 1045389X2110188
Author(s):  
Toshihiko Shiraishi ◽  
Shuto Nagamatsu ◽  
Hirotaka Misaki
Keyword(s):  
Performance Test ◽  
Dynamic Range ◽  
Vibration Suppression ◽  
High Dynamic Range ◽  
Dispersion Stability ◽  
High Dispersion ◽  
Test Results ◽  
Active Vibration Suppression ◽  
Active Vibration ◽  
High Dynamic

In this study, the dynamic range and dispersion stability of a shear-type magnetorheological (MR) grease damper were experimentally investigated as important characteristics affecting the performance of semi-active vibration suppression. Furthermore, the damper was applied to the semi-active vibration suppression of a small single-degree-of-freedom model structure subjected to seismic excitation. The performance test results of the damper indicated that it has a dynamic range of 157 times, which is much higher than that of conventional MR dampers. Also, because of the high dispersion stability of MR grease, the results showed that its performance can be kept for 9 days longer in comparison with a similar damper using MR fluid. Moreover, the structural vibration suppression test results demonstrated that the damper can suppress vibration response over a wide frequency range by applying skyhook-based control, which can take full advantage of the damper’s high dynamic range.

Calibration of a high dynamic range, low light level visible source

2011 ◽  
Author(s):  
Joe La Veigne ◽  
Todd Szarlan ◽  
Nate Radtke
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Light Level ◽  
Low Light ◽  
High Dynamic
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