Roboscan: a combined 2D and 3D vision system for improved speed and flexibility in pick-and-place operation

2013 ◽  
Vol 69 (5-8) ◽  
pp. 1873-1886 ◽  
Author(s):  
Paolo Bellandi ◽  
Franco Docchio ◽  
Giovanna Sansoni
Author(s):  
XIUQING YE ◽  
JILIN LIU ◽  
WEIKANG GU

In this paper an integrated vision system for autonomous land vehicle is described. The vision system includes 2D and 3D vision modules and information fusion module. The task of 2D vision is to provide the physical and geometry information of road, and the task of 3D vision system is to detect the obstacles in the surrounding. Fusion module combines 2D and 3D information to generate a feasible region provided for vehicle navigation.


1991 ◽  
Vol 9 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Michael Rygol ◽  
Stephen Pollard ◽  
Chris Brown

10.5244/c.1.9 ◽  
1987 ◽  
Author(s):  
J. Porrill ◽  
S. B. Pollard ◽  
T. P. Pridmore ◽  
J. B. Bowen ◽  
J. E. W. Mayhew ◽  
...  

1998 ◽  
Vol 31 (3) ◽  
pp. 435-439
Author(s):  
H. Lamela ◽  
J.R. López ◽  
E. García ◽  
S. Gómez ◽  
P. Acedo ◽  
...  

1988 ◽  
Vol 6 (2) ◽  
pp. 91-99 ◽  
Author(s):  
J Porrill ◽  
S.B. Pollard ◽  
T.P. Pridmore ◽  
J.B. Bowen ◽  
J.E.W. Mayhew ◽  
...  

1990 ◽  
Author(s):  
M. Rygol ◽  
S. B. Pollard ◽  
C. Brown

2021 ◽  
Author(s):  
Fernando Martinez-Ubieto ◽  
Ignacio Barranco-Dominguez ◽  
Lucía Tardós-Ascaso ◽  
Teresa Jiménez-Bernadó ◽  
Ana Pascual-Bellosta ◽  
...  

Abstract Background. Advanced laparoscopic procedures are still challenging. One critical issue is the lack of stereoscopic vision. The aim of this surgical study is to evaluate whether 3D vision offers any advantages for surgical performance over 2D vision during sleeve gastrectomy for morbid obesity using a laparoscopic system that allows changing between 2D and 3D optics.Method. A total of 78 patients were analyzed, with 37 in the 2D group and 41 in the 3D group. Performance time, hospital stay, complications and early outcomes were collected. To assess the quality of the 2D and 3D techniques, visual analog scales (VASs) from 0 to 10 were designed, and image quality, depth of field, precision in performing tasks and general ergonomics were measured.Results. According to the vision system used, the mean duration of surgery was 85 ± 16.8 minutes for patients operated on with the 2D system and 69 ± 16.9 minutes for those operated on with the 3D system. There were no significant differences between the overall percentages of complications according to the type of vision used. However, postoperative complications were more severe in the 2D laparoscopy group. The average length of stay was shorter for patients in the 3D group. Regarding the differences perceived by the surgeon, the depth of field and the precision of tasks were better in the 3D vision group.Conclusion. The 3D system provided greater depth perception and precision in more complex tasks, enabling safer surgery. This led to a reduction in the operative time and hospital stay. Moreover, the severity of complications was less.


1997 ◽  
Vol 119 (2) ◽  
pp. 151-160 ◽  
Author(s):  
Y. M. Zhang ◽  
R. Kovacevic

Seam tracking and weld penetration control are two fundamental issues in automated welding. Although the seam tracking technique has matured, the latter still remains a unique unsolved problem. It was found that the full penetration status during GTA welding can be determined with sufficient accuracy using the sag depression. To achieve a new full penetration sensing technique, a structured-light 3D vision system is developed to extract the sag geometry behind the pool. The laser stripe, which is the intersection of the structured-light and weldment, is thinned and then used to acquire the sag geometry. To reduce possible control delay, a small distance is selected between the pool rear and laser stripe. An adaptive dynamic search for rapid thinning of the stripe and the maximum principle of slope difference for unbiased recognition of sag border were proposed to develop an effective real-time image processing algorithm for sag geometry acquisition. Experiments have shown that the proposed sensor and image algorithm can provide reliable feedback information of sag geometry for the full penetration control system.


Forma ◽  
2014 ◽  
Author(s):  
Hiroki Hori ◽  
Tomoki Shiomi ◽  
Satoshi Hasegawa ◽  
Hiroki Takada ◽  
Masako Omori ◽  
...  

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