Representing Virtual Transparent Objects on OST-HMDs Considering Accommodation and Vergence

We represent virtual transparent objects on OST-HMDs, considering the defocus by accommodation and the binocular disparity by vergence. In augmented reality with conventional stereoscopic displays, it is difficult to reproduce the defocus and the disparity between the images, surface, reflection, and refraction, of a transparent object with different depths. The reason why is that the accommodation focal is always fixed on the display screen, and furthermore, the reflection and refraction images considering the disparity do not exist in real-time, as they require a ray-tracing method for each eye. In this study, we represented transparent objects by reproducing the defocus with blur processing, and the disparity with pseudo parallax refraction. In our experiment, it was confirmed that the transparent object reproduced with the proposed method makes the images more realistic compared to the unprocessed one.