A new image segmentation for virtual background reconstruction

作者：Xun Cai^*; Xiangxu Meng; Fei Cai; Long Jiang

来源：Chinese Journal of Electronics, 2008, 17(2): 223-226.

• video-based recognition
• colour estimation
• image segmentation
• virtual reality

This paper presents a new method of background segmentation for virtual background reconstruction in video-based virtual reality application. To aim at discounting the effect of non-uniform lightness on the diffuse and specular reflection background respectively, a background-colour measurement for diffuse as well as specular reflection is proposed based on Phong illumination model. This colour estimation has two steps: first, based on the colour invariance of diffuse reflection, the diffuse component of the model was estimated; second, the specular component was derived by using estimated diffuse factor and differerial laws. The experimental results of background segmentation show that the presented algorithm is considered robust to non-uniform lightness for diffuse reflection as well as the specular reflection and is also applicable for real-time video-based virtual reality system.

• 出版日期2008-4
• 单位山东大学; 山东建筑大学