| Image Credit: Getty Images |
| Although image manipulation is not a new phenomenon, the images and videos known as deepfakes go beyond mere pasting, retouching and photorealistic rendering. By definition, they have been created or manipulated by generative AI software—and as these tools improve, it becomes more difficult to distinguish real images from fakes. A feature article in the February issue of Optica’s magazine Optics & Photonics News (OPN) takes a closer look at the techniques used to generate deepfakes, the threats that they could pose to society and the countermeasures scientists are developing to detect them. |
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Researchers have designed a single-photon time-of-flight LiDAR system that can produce high-resolution
3D images of objects and faces that are some distance away. The images depict a recognizable
human face from a person 45 meters away.
Image Credit: Aongus McCarthy, Heriot-Watt University |
| In a recent article from Optica, learn how researchers designed a single-photon time-of-flight LiDAR system that can construct a 3D image of a clearly recognizable human face at distances up to 1 kilometer. The new system could help enhance security, monitoring, and remote sensing by enabling detailed imaging even in challenging environmental conditions or when objects are obscured by foliage or camouflage netting. |
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Researchers created an optical system that encrypts information as a hologram that is scrambled
when sent through a small container of liquid and then uses a neural network for decryption.
Image Credits: Stelios Tzortzakis, Institute of Electronic Structure and Laser, Foundation
for Research and Technology Hellas |
| In a new study published in Optica, researchers describe how they developed an optical system that uses neural networks to retrieve elaborately scrambled information stored as a hologram. This advance could pave the way for more secure communication channels, helping to protect sensitive data. |
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| Image Credits: Optica, Jenna Grace Schad, Tufts Univ; Peter Achermann, Univ of Zurich; Anze Malovrh of Slovenska Tiskovna Agencija; Dave Burbank; Brenda Ahearn, Michigan Engineering |
| Optica celebrates those advancing our field through outstanding technical, research, education, business, leadership, and service accomplishments. |
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| Image Credit: Optica |
| To celebrate this International Year of Quantum Science and Technology, Optica Publishing Group presents the QIST Collection—a curated selection of authoritative articles highlighting major contributions to quantum information science and technology over Optica’s history. Selected by a distinguished committee of editors and volunteers, these papers will be freely available all year, with more to come! Return to the Collection during the year to access additional articles. |
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| Image Credit: ICTASII, Blacksburg Campus, Virginia Tech |
| Giti Khodaparast has built a career based on collaborations. From the early stages of her education, she has worked to establish and maintain collaborators worldwide. She has always been interested in the human side of science: While competition is good, “there is enough room for everyone to play the game.” |
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 Image Credit: Optica |
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 Image Credit: Optica |
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