deletions | additions       diff --git a/Kinect_can_also_detect_shadows__.tex b/Kinect_can_also_detect_shadows__.tex  index fe71c5f..8558cd6 100644  --- a/Kinect_can_also_detect_shadows__.tex  +++ b/Kinect_can_also_detect_shadows__.tex 
...
Kinect can also detect shadows. The Kinect sensor uses a structured light technique to generate a depth map of the scene, wherein a dot pattern is projected by an IR light projector and captured by a displaced IR camera (see Fig. 1(b)). By calculating the disparities of the projected dots between the IR projector and camera, the depth of the scene is attained (see Fig. 1(c)). \citet{deng2013kinect} This research, \citet{deng2013kinect}'s study said that, they advocate a totally different idea of turning Kinect holes into useful information. In particular, we are interested in the type of holes that result from structured light shadows, which often occur near the boundary of the objects in the scene, as illustrated in Fig. 1(c)&(d). Such shadow information is very useful in providing high-level structural information of the scene.