Computational Light Painting Using a Virtual Exposure
Light painting is an artform where a light source is moved during a long‐exposure shot, creating trails resembling a stroke on a canvas. It is very difficult to perform because the light source needs to be moved at the intended speed and along a precise trajectory. Additionally, images can be corrup...
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| Published in | Computer graphics forum Vol. 36; no. 2; pp. 1 - 8 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Oxford
Blackwell Publishing Ltd
01.05.2017
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| Subjects | |
| Online Access | Get full text |
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| Abstract | Light painting is an artform where a light source is moved during a long‐exposure shot, creating trails resembling a stroke on a canvas. It is very difficult to perform because the light source needs to be moved at the intended speed and along a precise trajectory. Additionally, images can be corrupted by the person moving the light. We propose computational light painting, which avoids such artifacts and is easy to use. Taking a video of the moving light as input, a virtual exposure allows us to draw the intended light positions in a post‐process. We support animation, as well as 3D light sculpting, with high‐quality results. |
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| AbstractList | Light painting is an artform where a light source is moved during a long‐exposure shot, creating trails resembling a stroke on a canvas. It is very difficult to perform because the light source needs to be moved at the intended speed and along a precise trajectory. Additionally, images can be corrupted by the person moving the light. We propose computational light painting, which avoids such artifacts and is easy to use. Taking a video of the moving light as input, a virtual exposure allows us to draw the intended light positions in a post‐process. We support animation, as well as 3D light sculpting, with high‐quality results. |
| Author | Lancelle, Marcel Salamon, Nestor Z. Eisemann, Elmar |
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| Copyright | 2017 The Author(s) Computer Graphics Forum © 2017 The Eurographics Association and John Wiley & Sons Ltd. Published by John Wiley & Sons Ltd. 2017 The Eurographics Association and John Wiley & Sons Ltd. |
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| Snippet | Light painting is an artform where a light source is moved during a long‐exposure shot, creating trails resembling a stroke on a canvas. It is very difficult... Light painting is an artform where a light source is moved during a long-exposure shot, creating trails resembling a stroke on a canvas. It is very difficult... |
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| SubjectTerms | Animation Art & technology Categories and Subject Descriptors (according to ACM CCS) Computation Exposure I.3.4 [Computer Graphics]: Graphics Utilities—Paint systems Light Photography Production planning |
| Title | Computational Light Painting Using a Virtual Exposure |
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