Interactive Volume Caustics in Single-Scattering Media
Volume caustics are intricate illumination patterns formed by light
first interacting with a specular surface and subsequently being scattered inside a participating medium. Although this phenomenon
can be simulated by existing techniques, image synthesis is usually
non-trivial and time-consuming.
Motivated by interactive applications, we propose a novel volume
caustics rendering method for single-scattering participating media.
Our method is based on the observation that line rendering of illumination rays into the screen buffer establishes a direct light path
between the viewer and the light source. This connection is introduced via a single scattering event for every pixel affected by the
line primitive. Since the GPU is a parallel processor, the radiance
contributions of these light paths to each of the pixels can be computed and accumulated independently. The implementation of our
method is straightforward and we show that it can be seamlessly
integrated with existing methods for rendering participating media.
We achieve high-quality results at real-time frame rates for large
and dynamic scenes containing homogeneous participating media.
For inhomogeneous media, our method achieves interactive performance that is close to real-time. Our method is based on a simplified physical model and can thus be used for generating physically
plausible previews of expensive lighting simulations quickly.
Teaching
Computational Optical Imaging
Lecture in winter term 2013/14
General Information
Course webpage - Libres Savoirs -->When: 2013, Sept. 09th to 2013, Oct. 28th
Where: IOA/IOGS buiding room F102
Registration for mailing list: send email to Ivo Ihrke (firstname[dot]lastname[at]inria.fr)
Overview:
This lecture covers advanced digital imaging techniques for image correction and calibration, as well as algorithms and optical considerations for the extraction of three-dimensional content from (sets of) images. We explore the notion of computional-optical codesign and modern high-dimensional imaging techniques.
The tentative course schedule is
Tuesday | 10.09.2013 | Introduction and Sensor Technology | [pdf intro] [pdf sensors] |
Thursday | 12.09.2013 | Noise, Dynamic Range, and Color | [pdf noise/dr/color] |
Monday | 16.09.2013 | Imaging Imperfections, Panoramas and the Basics of 3D | [pdf panoramas&3D] |
Monday | 23.09.2013 | Camera Calibration and Feature Detection | [pdf calibration&features] |
Monday | 30.09.2013 | Stereo and Self-Calibration | [pdf stereo&self-calibration] |
Thursday | 03.10.2013 | Active 3D Scanning | [pdf active light 3D] |
Monday | 07.10.2013 | Tomography | [pdf tomography] |
Monday | 14.10.2013 | Deconvolution | [pdf deconvolution] |
Monday | 21.10.2013 | Light Fields | [pdf light fields] |
Thursday | 24.10.2013 | Introduction to Variational Image Processing (original slides by Bastian Goldluecke) | [pdf intro] [pdf variational analysis] [pdf gradient descent] |
FAQ: