Creating 3D Images for LG 3D-TV

by Pathai Suwannawiwat, Bo Sriraphanth, and Phanuwat Phunkasem


Why do we see objects in 3D? Do you know the answer? 3D stands for "Three Dimension", i.e. something that has width, height and length. Humans are able to perceive the world in 3D, more accurately the spatial relationship between objects, because we have depth perception. Since our eyes are in different positions, each eye sees a slightly different image from the other and our brain then combines these two images into one 3D image. This is the reason why we see objects in 3D.


   
Figure 1. LG 3D-TV, 3D polarized Glasses and Stereo Camera 


For creating 3D images, two identical Logitech webcam cameras were mounted onto a piece of aluminium with a separation of 9 cm between the centres of each camera lens as shown at the bottom right of Figure 1, which can be used as the stereo camara. This is an attempt to replicate the human 3D vision capabilities. The stereo camera had to be calibrated first, which is a necessary step in computer vision in order to obtain intrinsic, extrinsic, and lens-distortion parameters of cameras for calculating 3D information of the scene, correcting optical distortion artifacts, and aligning images. Then we let both left and right cameras simultaneously capture stereo image pairs that were rectified and undistorted using the estimated camera parameters. To display 3D images on the LG 3D-TV, we need to turn on 3D mode and then select the third thumbnail, the side-by-side format, as shown in Figure 2.



Figure 2. Side-by-side Format on 3D Mode of LG 3D-TV          

 
To be able to see 3D images on the LG 3D-TV, we need to wear the 3D polarized glasses shown at the bottom left of Figure 1. Figure 3 shows examples of side-by-side images taken at TGGS laboratories. All side-by-side images taken at TGGS laboratories and around KMUTNB university can be downloaded below at the bottom of this web page or can be viewed as a slide show on YouTube inserted below. For our next project, we will make and display real-time 3D videos on the LG 3D-TV.        





Figure 3. Examples of side-by-side Images






ċ
AroundKMUTNBUniversity.rar
(9957k)
sse tggs,
Feb 16, 2014, 9:59 PM
ċ
TGGSLaboratories.rar
(11645k)
sse tggs,
Feb 16, 2014, 9:59 PM
Comments