  In this paper, we take advantage of binocular camera and propose an
unsupervised algorithm based on semi-supervised segmentation algorithm and
extracting foreground part efficiently. We creatively embed depth information
into bilateral grid in the graph cut model and achieve considerable segmenting
accuracy in the case of no user input. The experi- ment approves the high
precision, time efficiency of our algorithm and its adaptation to complex
natural scenario which is significant for practical application.
