Projects per year
Bidirectional scattering distribution function (BSDF) represents the scattered light distribution in forward and backward directions. BSDF is an important function in precise lighting design, because surface scattering is difficult to determine and including it in simulations. However, to measure a whole field BSDF is time consuming, as it can take as long as a day. In this paper, we propose and demonstrate a new way to measure BSDF. We utilize a screen that is illuminated by the scattered light, and a camera that captures the image on the screen. A complex calibration between the grey level of the camera and intensity is performed to make sure the measurement is valid. Through continuously imaging the screen for various scattered light distributions, an image fusion is performed to present the final BSDF. We call this instrument as screen image synthesis (SIS) BSDF meter. In this paper, two generations of SIS BSDF meter was developed, and is shown in details.
|Title of host publication||Current Developments in Lens Design and Optical Engineering XX|
|Editors||R. Barry Johnson, Virendra N. Mahajan, Simon Thibault|
|State||Published - 2019|
|Event||Current Developments in Lens Design and Optical Engineering XX 2019 - San Diego, United States|
Duration: 12 Aug 2019 → …
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Conference||Current Developments in Lens Design and Optical Engineering XX 2019|
|Period||12/08/19 → …|
- Intensity distribution
- Screen image synthesis
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"Naked-Eyes 3d Vedio without Display" Implemented by Volume Holographic Optical Element(3/3)
1/08/21 → 31/07/22
1/08/21 → 31/07/22