Staff Report / FLXlocal.org

**New Method to Digitally Render Iridescent Feathers Developed by Cornell Researchers**

ITHACA, NY — Computer animators and video game designers may soon have an improved method for creating realistic depictions of iridescent bird feathers, thanks to a breakthrough in rendering technology developed by researchers at Cornell University.

The research, led by Steve Marschner, professor of computer science in the Cornell Ann S. Bowers College of Computing and Information Science, focuses on how light interacts with iridescent feathers such as the purple-green sheen of a grackle’s wing or the pink flashes on a hummingbird’s throat. Using specimens from the Cornell Lab of Ornithology as references, Marschner’s team collaborated with industry partners to create digital models that capture the colors and glittery texture of bird feathers as they shift under different lighting and viewing angles.

Unlike past models, this new method incorporates fine variances that give natural iridescent feathers their unique, imperfect appearance. “Natural iridescent things will always have these imperfect qualities,” Marschner said.

Researchers are planning to make the technology more accessible by integrating it into user-friendly software for animators and game designers. The model holds potential for real-time applications in interactive environments such as video games or virtual worlds. “Even though it takes a lot of computation to build these models, using them in the end is pretty efficient,” Marschner explained.

The team hopes their work can eventually be expanded beyond feathers to simulate iridescent effects on entire birds or other animals, such as the pigment effects seen in the skin of fish and octopuses. Additional modeling, however, will be necessary to account for these unique biological features.

This advancement offers exciting possibilities in the realms of digital art, gaming, and scientific visualization.

Source: Cornell University

Source Type: College

Source Location: Ithaca

Ithaca, NY

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