How the war on terror could solve art's most enduring mysteries

Software developed to recognise faces is being used to identify people in portraits

Software developed to recognise terrorist faces is being adapted to solve the mystery of portraits of unidentified people.

In certain cases, cutting-edge "face recognition" technology could identify faces from digital images, detecting similarities in facial constructs. The data will come from scans of known features of individuals, such as in a death mask or identified sculpture.

A feasibility study is being conducted by two art historians and an electronic engineer at the University of California. They describe FACES (Faces, Art and Computerised Evaluation Systems) as a "new tool for art historians". The project has received a $25,000 government grant.

Conrad Rudolph, professor of art history at the university, said: "Before the advent of photography, portraits were, almost by definition, depictions of people who were important in their own worlds. But, as a walk through almost any major museum will show, a large number of these unidentified portraits from before the 19th century have lost the identities of their subjects."

Frans Hals' The Laughing Cavalier, the 1624 masterpiece in the Wallace Collection, London, is among famous portraits whose sitters remain unknown. The picture's title was coined in the 19th century.

Jeremy Warren, the Wallace's director of collections, said: "With the Laughing Cavalier, everyone accepts that name, but actually he's not laughing and he's not a cavalier ... I'd love to know who he is. If this technology can help us do it, we'd be absolutely delighted."

Bendor Grosvenor, a specialist in portraits at the Philip Mould Gallery, London, would particularly like to identify a "rather beautiful portrait" by an anonymous 17th-century hand – currently on show at the National Portrait Gallery.

He said: "It was traditionally called The Duke of Monmouth on his deathbed, but it isn't him as the dates don't work. Deathbed portraits are relatively rare, so who was important enough, or loved enough, to have been painted in such a moving portrayal by a good artist? I would love to know."

But he added: "Most unknown sitters are unknown because they were only painted once, and there is no other likeness with which to compare them. So the new programme will most likely only help with portraits of people for whom we already have other portraits."

Professor Rudolph accepts that "difficulties are inherent" through variations in expressions, age, angle of pose and lighting. But initial tests – on identified 15th-century portraits of Lorenzo de' Medici, the Florentine ruler – have shown how faces can be reduced to labelled graphs and matched up.

Famous nobodies: Unknown sitters

1. Girl with a Pearl Earring: Little is known about this portrait by the Dutch painter Johannes Vermeer, from about 1667, despite the novel of the same name, later adapted as a film, which speculated she was one of his servants.

2. The Laughing Cavalier: Frans Hals' work, painted in 1624, has an inscription which reveals the one known fact about the sitter: he was 26.

3. Portrait of unknown woman: This portrait, painted around 1570, was thought to depict Mary, Queen of Scots, but the sitter bears no similarity to portraits of her. Her dress suggests a noblewoman.

4. Unknown man: This portrait of a man on his deathbed was thought to depict James Scott, Duke of Monmouth, the eldest illegitimate son of Charles II, who was beheaded in 1685. However, the hair and style suggest a date in the 1640s.

Arts and Entertainment
Sir Nicholas Serota has been a feature in the Power 100 top ten since its 2002 launch
art
Arts and Entertainment
Awesome foursome: Sam Smith shows off his awards
music22-year-old confirms he is 2014’s breakout British music success
Arts and Entertainment
Contestants during this summer's Celebrity Big Brother grand finale
tvBroadcaster attempts to change its image following sale to American media group
Arts and Entertainment
Sarah Dales attempts to sell British Breeze in the luxury scent task
tvReview: 'Apprentice' candidate on the verge of tears as they were ejected from the boardroom
Arts and Entertainment
Kate Bush: 'I'm going to miss everyone so much'
music
PROMOTED VIDEO
Arts and Entertainment
Laura Wood, winner of the Montegrappa Scholastic Prize for New Children’s Writing
books

Children's bookseller wins The Independent's new author search

Arts and Entertainment
Pulling the strings: Spira Mirabilis

music
Have you tried new the Independent Digital Edition apps?
Arts and Entertainment
Neville's Island at Duke of York's theatre
musicReview: The production has been cleverly cast with a quartet of comic performers best known for the work on television
Arts and Entertainment
Banksy's 'The Girl with the Pierced Eardrum' in Bristol

art
Arts and Entertainment
Lynda Bellingham stars in her last Oxo advert with on-screen husband Michael Redfern

tv
Arts and Entertainment
Hunger Games actress Jena Malone has been rumoured to be playing a female Robin in Batman v Superman

film
Arts and Entertainment
Tim Minchin portrait
For a no-holds-barred performer who is scathing about woolly thinking and oppressive religiosity, Tim Minchin is surprisingly gentle
Arts and Entertainment
Clara takes the lead in 'Flatline' while the Doctor remains in the Tardis
tvReview: The 'Impossible Girl' earns some companion stripes... but she’s still annoying in 'Dr Who, Flatline'
Arts and Entertainment
Joy Division photographed around Waterloo Road, Stockport, near Strawberry Studios. The band are Bernard Sumner (guitar and keyboards), Stephen Morris (drums and percussion), Ian Curtis (vocals and occasional guitar), Peter Hook (bass guitar and backing vocals).
books
Arts and Entertainment
Sean Harris in 'The Goob' film photocall, at the Venice International Film Festival 2014
filmThe Bafta-winner talks Hollywood, being branded a psycho, and how Streisand is his true inspiration
Arts and Entertainment
X Factor contestant Fleur East
tvReview: Some lacklustre performances - but the usual frontrunners continue to excel
Arts and Entertainment
Richard Tuttle's installation in the Turbine Hall at the Tate Modern
artAs two major London galleries put textiles in the spotlight, the poor relation of the creative world is getting recognition it deserves
Arts and Entertainment
Hunger Games actress Jena Malone has been rumoured to be playing a female Robin in Batman v Superman
film
Arts and Entertainment
On top of the world: Actress Cate Blanchett and author Richard Flanagan
artsRichard Flanagan's Man Booker win has put paid to the myth that antipodean artists lack culture
Arts and Entertainment
The Everyman, revamped by Haworth Tompkins
architectureIt beats strong shortlist that included the Shard, the Library of Birmingham, and the London Aquatics Centre
Arts and Entertainment
Justice is served: Robert Downey Jr, Vincent D’Onofrio, Jeremy Strong and Robert Duvall in ‘The Judge’

Film

Arts and Entertainment
Clive Owen (centre) in 'The Knick'

TV

Arts and Entertainment
J.K. Simmons , left, and Miles Teller in a scene from

Film

Arts and Entertainment
Team Tenacity pitch their fetching solar powered, mobile phone charging, heated, flashy jacket
tvReview: No one was safe as Lord Sugar shook things up
Latest stories from i100
Have you tried new the Independent Digital Edition apps?

ES Rentals

    Independent Dating
    and  

    By clicking 'Search' you
    are agreeing to our
    Terms of Use.

    How could three tourists have been battered within an inch of their lives by a burglar in a plush London hotel?

    A crime that reveals London's dark heart

    How could three tourists have been battered within an inch of their lives by a burglar in a plush London hotel?
    Meet 'Porridge' and 'Vampire': Chinese state TV is offering advice for citizens picking a Western moniker

    Lost in translation: Western monikers

    Chinese state TV is offering advice for citizens picking a Western moniker. Simon Usborne, who met a 'Porridge' and a 'Vampire' while in China, can see the problem
    Handy hacks that make life easier: New book reveals how to rid your inbox of spam, protect your passwords and amplify your iPhone

    Handy hacks that make life easier

    New book reveals how to rid your email inbox of spam, protect your passwords and amplify your iPhone with a loo-roll
    KidZania lets children try their hands at being a firefighter, doctor or factory worker for the day

    KidZania: It's a small world

    The new 'educational entertainment experience' in London's Shepherd's Bush will allow children to try out the jobs that are usually undertaken by adults, including firefighter, doctor or factory worker
    Renée Zellweger's real crime has been to age in an industry that prizes women's youth over humanity

    'Renée Zellweger's real crime was to age'

    The actress's altered appearance raised eyebrows at Elle's Women in Hollywood awards on Monday
    From Cinderella to The Jungle Book, Disney plans live-action remakes of animated classics

    Disney plans live-action remakes of animated classics

    From Cinderella to The Jungle Book, Patrick Grafton-Green wonders if they can ever recapture the old magic
    Thousands of teenagers to visit battlefields of the First World War in new Government scheme

    Pupils to visit First World War battlefields

    A new Government scheme aims to bring the the horrors of the conflict to life over the next five years
    The 10 best smartphone accessories

    Make the most of your mobile: 10 best smartphone accessories

    Try these add-ons for everything from secret charging to making sure you never lose your keys again
    Mario Balotelli substituted at half-time against Real Madrid: Was this shirt swapping the real reason?

    Liverpool v Real Madrid

    Mario Balotelli substituted at half-time. Was shirt swapping the real reason?
    West Indies tour of India: Hurricane set to sweep Windies into the shadows

    Hurricane set to sweep Windies into the shadows

    Decision to pull out of India tour leaves the WICB fighting for its existence with an off-field storm building
    Indiana serial killer? Man arrested for murdering teenage prostitute confesses to six other murders - and police fear there could be many more

    A new American serial killer?

    Police fear man arrested for murder of teen prostitute could be responsible for killing spree dating back 20 years
    Sweetie, the fake 10-year-old girl designed to catch online predators, claims her first scalp

    Sting to trap paedophiles may not carry weight in UK courts

    Computer image of ‘Sweetie’ represented entrapment, experts say
    Fukushima nuclear crisis: Evacuees still stuck in cramped emergency housing three years on - and may never return home

    Return to Fukushima – a land they will never call home again

    Evacuees still stuck in cramped emergency housing three years on from nuclear disaster
    Wildlife Photographer of the Year: Intimate image of resting lions claims top prize

    Wildlife Photographer of the Year

    Intimate image of resting lions claims top prize
    Online petitions: Sign here to change the world

    Want to change the world? Just sign here

    The proliferation of online petitions allows us to register our protests at the touch of a button. But do they change anything?