A vision based human - elepahant collision detection system

Author(s):  
Isha Dua ◽  
Pushkar Shukla ◽  
Ankush Mittal
2015 ◽  
Vol 75 (2) ◽  
Author(s):  
Abdullah Bade ◽  
Ching Sue Ping ◽  
Siti Hasnah Tanalol

For the past 2-decades, the challenges of collision detection on cloth simulation have attracted numerous researchers.  Simple mass spring model is used to model the cloth where the movement of the particles within the cloth was controlled by applying the Newton’s second law. After the modeling stage, implementation of the collision detection algorithm took place on cloth has been done. The collision detection technique used is bounding sphere hierarchy. Then, quad tree is being used to partitioning the bounding sphere and the collision search was based on the top-down approach. A prototype of the collision detection system is developed on cloth simulation and several experiments were conducted. Time taken for this system to be executed is around 235.258 milliseconds. Then the frame rate is at the average of 22 frames per second which is close to the real time system. Times taken for the collision detection system travels from root to nodes were 23 seconds. As a conclusion, the computational cost for bounding sphere hierarchy is much higher because the bounding sphere required more vertices for generation process, however the execution time for bounding sphere hierarchy is faster than the AABB hierarchy.  


2014 ◽  
Vol 989-994 ◽  
pp. 2389-2392 ◽  
Author(s):  
Huai Yu Wang ◽  
Shu Gui Liu

NC lathe controls the action of the lathe through program control system, while programming mistakes may lead to collisions between NC lathe cutters and workpieces or fixtures. A collision detection system judge whether there are collisions ahead of time by means of reading the information of shape and pose of objects in processing environment, building a space model using CSG and acquring the movement intension of objects. Dividing the modeling space into space nodes using octree, building AABBs of objects to be tested and locating them at certain space nodes, only objects at the same node or the same father node need to be tested, thus testing speed is raised.


Author(s):  
Alemayehu W. Huluka ◽  
Hirpa G. Lemu

In order to reduce the alarmingly increasing vehicle accident worldwide, developing collision detection system has been an endeavor of engineers within the last 3–4 decades. Based on the vehicles’ speed and acceleration, detecting the safe distance is one of the approaches reported in research results and claimed patents. As speed and acceleration of both the involved vehicles is changing with time, developing effective algorithms that can capture and process sufficient dynamic information and then warn for or take appropriate action is demanded. One possible approach that can contribute to the effort of minimizing vehicle collision accidents is to use embedded electronic systems to control the speed of the vehicle(s). Accordingly, the study and research work reported in this article focuses on developing a model of rear-end anti-collision system that can detect the distance between two vehicles moving on the same lane in the same direction and alert the driver whenever danger is eminent within certain tolerance range.


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