Calibrating Digital Imagery in Limited Time Conditions of Dawn, Dusk and Twilight
- Delivery
- Provide download link
- Format
- Price
- Non-members (tax incl.)：￥6,600 Members (tax incl.)：￥5,280
- Paper/Info type
- SAE Paper
No.2021-01-0855
- Pages
- 1-11(Total 11 p)
- Date of publication
- Apr 2021
- Publisher
- SAE International
- Language
- English
- Event
- SAE WCX Digital Summit 2021
Detailed Information
| Author(E) | 1) James Marr, 2) William Neale, 3) Steven Beier, 4) Alireza Hashemian, 5) Nathan Mckelvey |
|---|---|
| Affiliation(E) | 1) Kineticorp LLC, 2) Kineticorp LLC, 3) Kineticorp LLC, 4) Kineticorp LLC, 5) Kineticorp LLC |
| Abstract(E) | This paper presents a methodology for accurately representing dawn and dusk lighting conditions (twilight) through photographs and video recordings. Attempting to generate calibrated photographs and video during twilight conditions can be difficult, since the time available to capture the light changes rapidly over time. In contrast, during nighttime conditions, when the sun is no longer contributing light directly or indirectly through the sky dome, matching a specific time of night is not as relevant, as man-made lights are the dominate source of illumination. Thus, the initial setup, calibration and collection of calibrated video, when it is dark, is not under a time constraint, but during twilight conditions the time frame may be narrow. This paper applies existing methods for capturing calibrated footage at night but develops a method for adjusting the footage in the event matching an exact time during twilight is necessary. This method allows photographs and video that are captured either slightly earlier or later than desired to be accurately adjusted in post processing - thus removing the need to have footage captured at an exact time. |
