Full Breakdown
Nikon Re-reviews Small World In Motion Winner Over AI Allegations
By Drooid · · How we work
Core Event: Re-evaluation of First-Place Video
Nikon announced it is “carefully re-reviewing” the winning entry of its 2026 Small World In Motion competition after microscopy community members raised concerns that artificial-intelligence (AI) tools were used in the video’s post-processing. The short film of airway cilia beating in a child with primary ciliary dyskinesia (PCD) was submitted by Dr. Ning Xu, then at Tsinghua University and now a research fellow at the National University of Singapore. Nikon said the entrant is “respectfully complying” and has supplied detailed technical documentation on the equipment, imaging methods and processing techniques used.
Background & Context
The Small World In Motion contest, run annually since 2011, showcases microscopy-derived movies judged on originality, informational content, technical proficiency and visual impact. Contest rules prohibit AI-generated videos, though artificial colourisation of genuine raw data is allowed. Xu’s video, which won first place in September, employed AI-assisted post-processing to colourise and enhance grayscale reconstructions of super-resolution optical images. The colour palette does not correspond to fluorescence channels, and Xu has stated that AI was limited to visual enhancement rather than generation of the underlying footage.
Criticism & Opposition
Several scientists have publicly questioned whether the video complies with the AI ban.
- Valentin Dunsing-Eichenauer, Der Simulierte Mensch, Berlin, argued that image processing should reveal structures that cannot be resolved, not “hallucinate” features that do not exist. He called for the raw data to be released for verification.
- Edward Phelps, associate professor at the University of Florida, noted that structures appear to pop in and out of existence and that the cilia seem larger than biologically realistic.
- Ian Donovan, a PhD student at UT Southwestern Medical Center, reported an embedded SynthID watermark that, in his view, indicates synthetic or AI-generated content.
- Shawn Reeves, founder of Energy Teachers, said the desire to win should not lead to “cheating” and called for a more cooperative competition model.
Official Statements & Responses
Nikon’s LinkedIn post reiterated that the organization is re-reviewing the entry and will update the Small World community after evaluating Xu’s additional documentation. The company emphasized that no definitive rule violation has been identified at this stage.
Dr. Xu responded on Nikon’s LinkedIn thread, asserting that AI was not used to generate the experimental movie, the cilia, or their motion. He explained that AI was applied after reconstruction of the grayscale data to distinguish and colour structures with similar morphology, and that the false-colour rendering was intended solely to improve visual presentation. Xu indicated that a more detailed description of the optical system and quantitative analysis of ciliary motion are being prepared for publication.
Conflicting Reports & Gaps
The dispute centers on whether AI-assisted post-processing breaches the competition’s prohibition on AI-generated videos. Nikon’s guidelines forbid AI from creating the core visual content but allow colour enhancement of authentic data. Xu maintains his use falls within this allowance; critics argue the AI alterations effectively create new visual information, blurring the line between enhancement and generation. As of October 1, Xu’s LinkedIn comments were no longer visible and his profile appeared deleted, leaving a gap in direct evidence of his explanations.
What’s Next
Nikon has indicated an update for the Small World community will be issued “next week,” after the re-review is completed and the technical documentation is fully assessed. The outcome will determine whether the first-place award stands or is rescinded and may prompt clarification of the contest’s AI policy for future entries.