|Table of Contents|

 Light Source Detection Algorithm in Realtime Scene Based on Single Tag(PDF)


Research Field:
Publishing date:


 Light Source Detection Algorithm in Realtime Scene Based on Single Tag
 SUN BowenSUN JianTANG Beibei
 School of Computer Science and Technology,Harbin University of Science and Technology,Harbin 150080,China
 Keywords:lighting detection illumination coherence combination of virtual and real objects argument reality
 Abstract:The illumination coherence in augmented reality is an important means that makes virtual objects get realistic. It can make the computergenerated virtual objects blend into the real scene In order to archieve the illumination coherence of augmented reality, this paper modifies the present algorithm and proposes a algorithm based on single tag This new method collects the brightness of the identification marking in any direction to make sure which direction the light source might be; it compares the brightness of the identification marking with the brightness of the virtual objects to ensure the brightness of the light source; it determines the color of the light source by getting the color of the marker portion of no inkjet Experiments show that in meet the realtime and stability at the same time,the average angle between the virtual light source which is estimated by using the algorithm in this paper and the true source is 43 degrees,and the virtual objects can correctly cast shadows


[3]SATO I,SATO Y,IKEUCHI KAcqiring a Radiance Distribution to Suipermpose Virtual Objects Onto a Real Scene[J].IEEE Transactions on Visualization and Computer Graphics,1999,5(1):1-12
[4]AZUMA R TA Survey of Augmented Reality[J].Presence Teleoperators & Virtul Environments,1997,6(4):355-385
[5]VAN Krevelen D W F,POELMAN RA Survey of Augmented Reality Technologies, Applications and Limitations[J].International Journal of Virtual Reality,2010,9(2):1-20
[7]TOMMY Jensen Mikkel,SANDBERG Andersen,CLAUS,et al Realtime Image Based Lighting for Outdour Argmented Reality under Dynamically Changing Illumination Conditions[J].International Conference on Computer Graphics Theory and Applications,2006:364-371
[8]CLAUS B Madsen,RUNE Laursen A Scalable GPUbased Approach to Shading and Shadowing for Shotorealistic Realtime Augmented Reality[J]. International Conference on Graphics Theory and Applications,2007:252-261
[9]JeanFrancois Lalonde,Srinivasa G Narasimhan,Alexei AEfrosWhat do the Sun and Sky Tell us About the Camera[J].International Journal of Computer Vision,2010:24-51 
[11]谭茗,陈浩,孙建华基于动态Light Map的增强现实光照算法[J].计算机工程,2009,35(21):261-263


Last Update: 2019-03-26