Active Imaging Lens with Real-Time Variable Resolution and Constant Field of View

2010 ◽  
Author(s):  
Jocelyn Parent ◽  
Simon Thibault
Keyword(s):  
Real Time ◽  
Time Variable ◽  
Field Of View ◽  
Constant Field ◽  
Variable Resolution ◽  
Active Imaging

Morton (Z) scan based real-time variable resolution CMOS image sensor

2005 ◽  
Vol 15 (7) ◽  
pp. 947-952 ◽  
Author(s):  
E. Artyomov ◽  
Y. Rivenson ◽  
G. Levi ◽  
O. Yadid-Pecht
Keyword(s):  
Real Time ◽  
Cmos Image Sensor ◽  
Image Sensor ◽  
Time Variable ◽  
Variable Resolution

Real-time variable field-of-view scanning of LiDAR by controlling the drive voltage of MEMS micromirror

Optik ◽  
2021 ◽  
pp. 167760
Author(s):  
Qingyan Li ◽  
Yafei Yang ◽  
Shiyu Yan ◽  
Bin Zhang ◽  
Chunhui Wang
Keyword(s):  
Real Time ◽  
Time Variable ◽  
Field Of View ◽  
Drive Voltage ◽  
Variable Field

scholarly journals Real-Time Expanded Field-of-View for Minimally Invasive Surgery Using Multi-Camera Visual Simultaneous Localization and Mapping

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2106
Author(s):  
Ahmed Afifi ◽  
Chisato Takada ◽  
Yuichiro Yoshimura ◽  
Toshiya Nakaguchi
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Real Time ◽  
Invasive Surgery ◽  
Simultaneous Localization And Mapping ◽  
Field Of View ◽  
Time Dynamic ◽  
Matrix Estimation ◽  
Localization And Mapping

Minimally invasive surgery is widely used because of its tremendous benefits to the patient. However, there are some challenges that surgeons face in this type of surgery, the most important of which is the narrow field of view. Therefore, we propose an approach to expand the field of view for minimally invasive surgery to enhance surgeons’ experience. It combines multiple views in real-time to produce a dynamic expanded view. The proposed approach extends the monocular Oriented features from an accelerated segment test and Rotated Binary robust independent elementary features—Simultaneous Localization And Mapping (ORB-SLAM) to work with a multi-camera setup. The ORB-SLAM’s three parallel threads, namely tracking, mapping and loop closing, are performed for each camera and new threads are added to calculate the relative cameras’ pose and to construct the expanded view. A new algorithm for estimating the optimal inter-camera correspondence matrix from a set of corresponding 3D map points is presented. This optimal transformation is then used to produce the final view. The proposed approach was evaluated using both human models and in vivo data. The evaluation results of the proposed correspondence matrix estimation algorithm prove its ability to reduce the error and to produce an accurate transformation. The results also show that when other approaches fail, the proposed approach can produce an expanded view. In this work, a real-time dynamic field-of-view expansion approach that can work in all situations regardless of images’ overlap is proposed. It outperforms the previous approaches and can also work at 21 fps.

scholarly journals Soft Biometrics for a Socially Assistive Robotic Platform

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Pierluigi Carcagnì ◽  
Dario Cazzato ◽  
Marco Del Coco ◽  
Pier Luigi Mazzeo ◽  
Marco Leo ◽  
...  
Keyword(s):  
Real Time ◽  
Humanoid Robot ◽  
Field Of View ◽  
Robotic Platform ◽  
Time System ◽  
Real Time System ◽  
Age And Gender ◽  
Gender And Age ◽  
And Gender ◽  
Assistive Robotic

AbstractIn thiswork, a real-time system able to automatically recognize soft-biometric traits is introduced and used to improve the capability of a humanoid robot to interact with humans. In particular the proposed system is able to estimate gender and age of humans in images acquired from the embedded camera of the robot. This knowledge allows the robot to properly react with customized behaviors related to the gender/age of the interacting individuals. The system is able to handle multiple persons in the same acquired image, recognizing the age and gender of each person in the robot’s field of view. These features make the robot particularly suitable to be used in socially assistive applications.

scholarly journals Real-Time, Variable-Depth Tillage for Managing Soil Compaction in Cotton Production

2018 ◽  
Vol 08 (06) ◽  
pp. 147-161 ◽  
Author(s):  
Jonathan W. Fox ◽  
Ahmad Khalilian ◽  
Young J. Han ◽  
Phillip B. Williams ◽  
Ali Mirzakhani Nafchi ◽  
...  
Keyword(s):  
Real Time ◽  
Soil Compaction ◽  
Time Variable ◽  
Cotton Production ◽  
Variable Depth
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