A vibrant microscopic video that shows cilia swaying inside the airway of a child with a rare disease has won Nikon’s long‑running Small World In Motion contest. The film, submitted by Dr Ning Xu, a researcher at Tsinghua University in China, was hailed as a scientific triumph but has now been called into question.
While the competition permits bright, colour–enhanced images, other scientists have argued that Dr Xu’s film shows structures that contradict the physics of real cilia – “they pop in and out of existence” – and that artificial enlargements may have been added through artificial‑intelligence post‑processing.
In a statement posted on LinkedIn following criticism, Dr Xu acknowledged that AI was used to “distinguish and visualise features in the reconstructed grayscale images,” but insisted the base footage and the cilia themselves were captured with a microscope and complied with Nikon’s rules. He added, “AI was not used to generate the experimental movie, the cilia, or their motion.”
The debate has involved former judges and experts from the University of Florida and UT Southwestern Medical Centre. Edward Phelps of Florida said the shapes “appear from nowhere,” and PhD student Ian Donovan noted a watermark that could indicate AI generation. Two former contest judges likewise expressed doubts about authenticity.
Nikon’s review has so far concluded that no rule was breached, citing the official guidelines that exclude generative AI but allow colouring and contrast enhancement post‑capture. The company has requested additional technical documentation from Dr Xu and will announce an update when the investigation is complete.
The situation highlights the growing tension between scientific imaging and AI‑based enhancement, raising important questions about truth in the era of “smart” image processing.
