In short
Dr Sadi Vural founded Ayonix in Tokyo in 2007 and is its Chief Executive Officer. He holds a 2011 doctorate from Osaka University on face recognition for outdoor surveillance, and his published work covers illumination-invariant recognition and object detection in uncontrolled conditions.
Role at Ayonix
He founded Ayonix in Tokyo in 2007 and is its Chief Executive Officer. He also writes and signs the technical articles this site publishes on face recognition evaluation, accuracy and deployment — which is why those articles carry his name rather than a company byline. A reader who wants to weigh a claim about biometric accuracy should be able to see who is making it and what they have published.
The company’s name comes from that research. The 2011 paper on illumination normalisation introduced a filter bank the authors called Ayofa-Filters, and the product line that grew out of that work took the name Ayonix.
Academic background
Dr Vural completed his doctorate at Osaka University in 2011. The dissertation, “Face recognition by using hybrid-holistic methods for outdoor surveillance systems”, is held in the Osaka University Knowledge Archive, the university’s own institutional repository.
His research at Osaka University was carried out with Yasushi Mae, Kenichi Ohara and Tatsuo Arai, and the resulting papers appeared in Pattern Recognition Letters, Machine Vision and Applications and the Journal of Robotics and Mechatronics. Earlier work at Ritsumeikan University addressed digital watermarking for cinema content.
The through-line across that work is the problem that still decides whether a deployment succeeds: recognising a face when the lighting, the angle and the distance are not chosen by the system.
Publications
Published research
Peer-reviewed or archived. This list covers published research, not product performance — nothing in it describes how a current Ayonix system behaves at a particular site, and it should not be read as a benchmark.
- Face relighting using discriminative 2D spherical spaces for face recognition Machine Vision and Applications · 2013
- Spherical Spaces for Illumination Invariant Face Relighting Journal of Robotics and Mechatronics · 2013
- Multi-view fast object detection by using extended Haar filters in uncontrolled environments Pattern Recognition Letters · 2011
- Illumination Normalization for Outdoor Face Recognition by Using Ayofa-Filters Journal of Pattern Recognition Research · 2011
- Robust Digital Cinema Watermarking Ritsumeikan University · 2008
The company name derives from the Ayofa-Filters introduced in the 2011 paper "Illumination Normalization for Outdoor Face Recognition by Using Ayofa-Filters"
- Source type
- Peer-reviewed or archived research
- Verified
- 2026-09-11 · Gabriel Bamola, Chief Marketing Officer
Editorial policy
Conflicts of interest, disclosed
Stated here as well as on each article, because a disclosure that only appears in small print is not a disclosure.
Dr Vural is the founder and Chief Executive Officer of Ayonix, so anything he writes about face recognition is written by an interested party. That is disclosed on each article as well as here.
The site’s standing rules are the practical form of that disclosure, and they are checkable rather than asserted:
- No accuracy figure is published for any vendor, Ayonix included.
- Every external claim cites a primary source and states what it does not establish.
- No claim about a customer appears without that customer’s agreement.
- The comparison guide compares categories rather than named competitors, discloses the conflict at the top, and states where the Ayonix categories are weak.
- Every high-risk claim is registered before publication and the build fails if a page states one it is not approved for.
Corrections are welcome and are made in public: a page’s last-reviewed date changes when its text does. Write to infojp@ayonix.com with the page and the correction.
Frequently asked questions
Who is Dr Sadi Vural?
The founder and Chief Executive Officer of Ayonix, the face recognition company he started in Tokyo in 2007. He holds a doctorate from Osaka University, where his 2011 dissertation addressed face recognition for outdoor surveillance systems, and his published work covers illumination-invariant recognition and object detection in uncontrolled conditions.
Where did Dr Sadi Vural earn his doctorate?
At Osaka University, in 2011. The dissertation, "Face recognition by using hybrid-holistic methods for outdoor surveillance systems", is held in the Osaka University Knowledge Archive, the university’s own institutional repository.
What has he published?
Peer-reviewed work on illumination-invariant face recognition and object detection, appearing in Pattern Recognition Letters, Machine Vision and Applications and the Journal of Robotics and Mechatronics, alongside earlier work on digital cinema watermarking at Ritsumeikan University. His research at Osaka University was carried out with Yasushi Mae, Kenichi Ohara and Tatsuo Arai.
Is Ayonix named after his research?
Yes. His 2011 paper on illumination normalisation for outdoor face recognition introduced a filter bank called Ayofa-Filters, and the company that grew out of that line of work took the name Ayonix.
Does he have a conflict of interest when writing about face recognition?
Yes, and it is disclosed on every article he signs. He founded and runs a face recognition company, so his writing about the field is the writing of an interested party. The response is procedural rather than rhetorical: no accuracy percentage is published for any vendor including Ayonix, every external claim cites its source, and no claim about a customer appears without that customer’s agreement.
Next step
Read the technical articles he signs
The pages on independent evaluation, accuracy and border deployment carry his name because a reader weighing a claim about biometric accuracy should be able to see who is making it and what they have published.