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Using computer vision to reveal visual illusions created by moth wing patterns

Using computer vision to reveal visual illusions created by moth wing patterns
The green fruit-piercing moth, Eudocima salaminia, has remarkable wing patterns which, to the human observer, appear highly three-dimensional, resembling a curled leaf. Photo by Sandid via Pixabay. Credit: Journal of the Royal Society Interface (2025). DOI: 10.1098/rsif.2024.0757

A new study by researchers from The University of Western Australia has used computer vision to reconstruct the false illusion of 3D shapes created by moth wing patterns.

The research, in the Journal of the Royal Society Interface, used computer vision, which is typically used for applications such as self-drive vehicles and face recognition, to determine whether the flat wing patterns of the green fruit-piercing moth, Eudocima salaminia, were falsely reconstructed as 3D shapes. This species of moth, which is commonly found across southeast Asia and Australia, is a citrus fruit pest.

The work was led by Dr. Jennifer Kelley from UWA's School of Biological Sciences, in collaboration with Professor Mohammed Bennamoun from UWA's School of Âé¶¹ÒùÔºics, Mathematics and Computing, Professor Farid Boussaid from UWA's School of Engineering, and former UWA computer science students Laurent Jospin and James Porter.

Dr. Kelley said that the wing patterns were very convincing and made the moth look like a rolled leaf, which would help it avoid daytime predators such as birds.

"We used several state-of-the-art computer vision methods to reconstruct the generated by the wing patterns," Dr. Kelley said.

"Biologists have long thought that animal patterns could produce shape illusions, but finding evidence for this is difficult, because of the challenges associated with studying in ."

The research revealed that many of the computer vision algorithms were fooled by the moth's wing patterns, with the reconstructions falsely producing 3D shapes.

"This is an unusual application of which may help us better understand the illusory effects generated by animal coloration," Dr. Kelley said.

The researchers are now looking to discover whether these illusory effects occur in other animals, such as striped patterns in snakes, and for functions other than camouflage, including eyespots on peacock feathers that are used to attract mates.

More information: Reconstructing illusory camouflage patterns on moth wings using computer vision, Journal of the Royal Society Interface (2025). .

Citation: Using computer vision to reveal visual illusions created by moth wing patterns (2025, April 30) retrieved 30 April 2025 from /news/2025-04-vision-reveal-visual-illusions-moth.html
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