scholarly journals Object Detection under Challenging Lighting Conditions using High Dynamic Range imagery

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Ratnajit Mukherjee ◽  
Maximino Bessa ◽  
Pedro Melo-Pinto ◽  
Alan Chalmers
Author(s):  
Bronislav Přibyl ◽  
Alan Chalmers ◽  
Pavel Zemčík ◽  
Lucy Hooberman ◽  
Martin Čadík

2021 ◽  
Author(s):  
Shixiong Zhang ◽  
Wenmin Wang

<div>Event-based vision is a novel bio-inspired vision that has attracted the interest of many researchers. As a neuromorphic vision, the sensor is different from the traditional frame-based cameras. It has such advantages that conventional frame-based cameras can’t match, e.g., high temporal resolution, high dynamic range(HDR), sparse and minimal motion blur. Recently, a lot of computer vision approaches have been proposed with demonstrated success. However, there is a lack of some general methods to expand the scope of the application of event-based vision. To be able to effectively bridge the gap between conventional computer vision and event-based vision, in this paper, we propose an adaptable framework for object detection in event-based vision.</div>


2016 ◽  
Vol 7 (15) ◽  
pp. 54 ◽  
Author(s):  
Rossella Suma ◽  
Georgia Stavropoulou ◽  
Elisavet K. Stathopoulou ◽  
Luc Van Gool ◽  
Andreas Georgopoulos ◽  
...  

<p class="VARAbstract">The ability of High Dynamic Range (HDR) imaging to capture the full range of lighting in a scene has meant that it is being increasingly used for Cultural Heritage (CH) applications. Photogrammetric techniques allow the semi-automatic production of 3D models from a sequence of images. Current photogrammetric methods are not always effective in reconstructing images under harsh lighting conditions, as significant geometric details may not have been captured accurately within under- and over-exposed regions of the image. HDR imaging offers the possibility to overcome this limitation, however the HDR images need to be tone mapped before they can be used within existing photogrammetric algorithms. In this paper we evaluate four different HDR tone-mapping operators (TMOs) that have been used to convert raw HDR images into a format suitable for state-of-the-art algorithms, and in particular keypoint detection techniques. The evaluation criteria used are the number of keypoints, the number of valid matches achieved and the repeatability rate. The comparison considers two local and two global TMOs. HDR data from four CH sites were used: Kaisariani Monastery (Greece), Asinou Church (Cyprus), Château des Baux (France) and Buonconsiglio Castle (Italy).</p>


2021 ◽  
Author(s):  
Shixiong Zhang ◽  
Wenmin Wang

<div>Event-based vision is a novel bio-inspired vision that has attracted the interest of many researchers. As a neuromorphic vision, the sensor is different from the traditional frame-based cameras. It has such advantages that conventional frame-based cameras can’t match, e.g., high temporal resolution, high dynamic range(HDR), sparse and minimal motion blur. Recently, a lot of computer vision approaches have been proposed with demonstrated success. However, there is a lack of some general methods to expand the scope of the application of event-based vision. To be able to effectively bridge the gap between conventional computer vision and event-based vision, in this paper, we propose an adaptable framework for object detection in event-based vision.</div>


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