scholarly journals Catadioptric Omnidirectional Stereo Imaging System and Reconstruction of 3-dimensional Coordinates

2015 ◽  
Vol 16 (6) ◽  
pp. 4108-4114
Author(s):  
Soon-Cheol Kim ◽  
Soo-Yeong Yi
Keyword(s):  
Imaging System ◽  
Stereo Imaging ◽  
3 Dimensional

Comparison of a Fluoroscopic 3-Dimensional Imaging System and Conventional CT in Detection of Pars Fractures in the Cadaveric Lumbar Spine

2012 ◽  
Vol 25 (8) ◽  
pp. 429-432 ◽  
Author(s):  
Christopher K. Kepler ◽  
Helene Pavlov ◽  
Richard J. Herzog ◽  
Bernard A. Rawlins ◽  
Yoshimi Endo ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Imaging System ◽  
3 Dimensional ◽  
Conventional Ct

scholarly journals Development of an X-ray real-time stereo imaging technique using synchrotron radiation

2011 ◽  
Vol 18 (4) ◽  
pp. 569-574 ◽  
Author(s):  
Masato Hoshino ◽  
Kentaro Uesugi ◽  
James Pearson ◽  
Takashi Sonobe ◽  
Mikiyasu Shirai ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Real Time ◽  
Imaging System ◽  
Silicon Crystal ◽  
Three Dimensional ◽  
Stereo Image ◽  
Large Field ◽  
Depth Information ◽  
Stereo Imaging ◽  
X Ray

An X-ray stereo imaging system with synchrotron radiation was developed at BL20B2, SPring-8. A portion of a wide X-ray beam was Bragg-reflected by a silicon crystal to produce an X-ray beam which intersects with the direct X-ray beam. Samples were placed at the intersection point of the two beam paths. X-ray stereo images were recorded simultaneously by a detector with a large field of view placed close to the sample. A three-dimensional wire-frame model of a sample was created from the depth information that was obtained from the lateral positions in the stereo image. X-ray stereo angiography of a mouse femoral region was performed as a demonstration of real-time stereo imaging. Three-dimensional arrangements of the femur and blood vessels were obtained.

scholarly journals Stereo Imaging Using Hardwired Self-Organizing Object Segmentation

Sensors ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 5833
Author(s):  
Ching-Han Chen ◽  
Guan-Wei Lan ◽  
Ching-Yi Chen ◽  
Yen-Hsiang Huang
Keyword(s):  
Neural Network ◽  
Stereo Vision ◽  
Stereo Matching ◽  
Imaging System ◽  
Object Segmentation ◽  
Hierarchical Architecture ◽  
Absolute Difference ◽  
Stereo Imaging ◽  
Som Neural Network ◽  
Self Organizing

Stereo vision utilizes two cameras to acquire two respective images, and then determines the depth map by calculating the disparity between two images. In general, object segmentation and stereo matching are some of the important technologies that are often used in establishing stereo vision systems. In this study, we implement a highly efficient self-organizing map (SOM) neural network hardware accelerator as unsupervised color segmentation for real-time stereo imaging. The stereo imaging system is established by pipelined, hierarchical architecture, which includes an SOM neural network module, a connected component labeling module, and a sum-of-absolute-difference-based stereo matching module. The experiment is conducted on a hardware resources-constrained embedded system. The performance of stereo imaging system is able to achieve 13.8 frames per second of 640 × 480 resolution color images.

scholarly journals Spastic diparetic does not directly affect the capacity to ascend and descend access ramps: three-dimensional analysis

2017 ◽  
Vol 30 (3) ◽  
pp. 537-547 ◽  
Author(s):  
Tainá Ribas Mélo ◽  
Ana Tereza Bittencourt Guimarães ◽  
Vera Lúcia Israel
Keyword(s):  
Imaging System ◽  
Three Dimensional ◽  
Control Group ◽  
Initial Contact ◽  
Experimental Conditions ◽  
3 Dimensional ◽  
Flexion Extension ◽  
Posterior Trunk ◽  
Hip Flexion ◽  
Study Participants

Abstract Introduction: Diplegic children have difficulties in gait and therefore ramps are used as strategies of accessibility. Objective: The present study investigated the influence of an inclined surface (ascending and descending) on the kinematic characteristics during gait of the diplegic group (DG) when compared to typically developing children of the control group (CG). Methods: Study participants included 20 children (10 with DG and 10 CG) matched by age, which were evaluated in three experimental conditions (horizontal and inclined ascending and inclined descending surfaces of 7º) through an optoelectronic imaging system. Results: Among the linear kinematic variables, only step width differed among groups, however, without influence of the surface. The foot height differed among the groups only in the descending phase, where DG had greater difficulty in raising the foot. The 3-dimensional gait analyses could not provide more evidences of differences in kinematics variables, especially in transverse plane, between DG and CG, but provide some evidence to support that hip range of motion (ROM) during the gait cycle, hip flexion-extension in initial contact, knee ROM and the 2nd anterior-posterior trunk peak amplitude of the DG were influenced on descent by their flexor pattern. Conclusion: The DG was most affected by the inclination plane than CG especially on descent. Although a hip and knee flexor pattern is evident for DG on inclination of 7º, this angle is accessible since it allows independent gait functional activity.

scholarly journals A high-throughput stereo-imaging system for quantifying rape leaf traits during the seedling stage

Plant Methods ◽  
2017 ◽  
Vol 13 (1) ◽  
Author(s):  
Xiong Xiong ◽  
Lejun Yu ◽  
Wanneng Yang ◽  
Meng Liu ◽  
Ni Jiang ◽  
...  
Keyword(s):  
High Throughput ◽  
Imaging System ◽  
Leaf Traits ◽  
Seedling Stage ◽  
Stereo Imaging

Asymmetric stereo imaging system for portable electronic devices

2012 ◽  
Vol 51 (4) ◽  
pp. 043201 ◽  
Author(s):  
Hyoungchul Shin
Keyword(s):  
Imaging System ◽  
Electronic Devices ◽  
Stereo Imaging
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