Rightly or wrongly...
Professor Graham Harding
Professor Graham Harding has studied photosensitive epilepsy since 1964
and has conducted more research into the condition at Aston University
than anywhere else worldwide. He developed the Harding Broadcast Flash
and Pattern Analyser* which is now used as the industry standard in
Britain to ensure that no broadcasting material contains light sequences
that may induce photosensitive epileptic seizures. The machine takes the
broadcasting material and tests whether it complies with ITC
(Independent Television Commission)** guidelines which restrict
repetitive patterns, saturated red (continuous red flashes) and light
flashes. He has consulted widely for the ITC, BBC and the BACC
(Broadcast Advertising Clearance Centre) on this subject. He has
provided invaluable help in implementing the ITC guidelines on flashing
images and regular patterns as well as drafting Japanese guidelines. In
December 1997 a children's Pokemon cartoon episode in Japan produced 685
admissions to hospital. 560 cases were shown to have had proved
seizures, triggered by four seconds of alternating saturated red and
blue light used in the programme. Of those patients, 76 percent had no
previous history of seizures. Professor Harding was frequently used as
an expert by media for this story.
http://www1.aston.ac.uk/about/news/releases/2004/april/040423/
I suspect the machine itself is designed to an extremely conservative
level. Even one child having been been left unprotected would trigger
lawsuits and a failure of confidence and reputation.
DD
On 2/24/2011 9:03 AM, Shirley Gutierrez wrote:
>
>
> Hmmm...Sounds like Professor Harding is unlikely to provide an
> objective opinion!
>
> Who appointed him the definer of strobing standards?
>
> Shirley
>
> -----Original Message-----
> From: Christopher Pitbladdo <avid@digitalbuddy.co.uk
> <mailto:avid%40digitalbuddy.co.uk>>
> To: Avid-L2@yahoogroups.com <mailto:Avid-L2%40yahoogroups.com>
> Sent: Thu, Feb 24, 2011 2:18 am
> Subject: Re: [Avid-L2] Re: Strobing Makes The News!
>
> Yes Pat, but if Professor Harding and his little machine are to be
>
> believed, then an epileptic seizure can be triggered by a quick pan or
>
> zoom, and almost anything involving fast motion. I'd be happy to upload
>
> some examples when I've got the time, just to show how the simplest of
>
> shots can fail.
>
> In a recent job where much of our program was shot in the London Mayor's
>
> building, in a press room with lots of light-coloured vertical bars on
>
> the wall, with a dark background, almost every shot seemed to fail
>
> because of a strobing issue, when there was very little movement on
>
> screen... We were flummoxed.
>
> Personally, I find it a bit worrying that Professor Harding, the man who
>
> defined these epliepsy thresholds for broadcasters happens to be the man
>
> who's behind the Harding Flash Pattern Analyser, the only box that's
>
> used and recognised by the U.K. broadcasters.
>
> *Christopher Pitbladdo
>
> Creative Director
>
> DB Creative*
>
> 496 Ferry Road
>
> Edinburgh
>
> EH5 2DL
>
> Tel: 0131 552 5530
>
> Mob: 07590 570 683
>
> Email: christopher@dbcreative.tv <mailto:christopher%40dbcreative.tv>
> <mailto:christopher@dbcreative.tv <mailto:christopher%40dbcreative.tv>>
>
> Web: www.dbcreative.tv <http://www.dbcreative.tv>
>
> Award-Winning Avid SD/HD Symphony Editing in Edinburgh
>
> On 24/02/2011 09:38, Pat Horridge wrote:
>
> >
>
> > It's not madness. We now know, and have done for some years, that PSE
>
> > if triggered in somebody of a particular age range can cause them to
>
> > suffer epilepsy the rest of their life. If they are able to avoid
>
> > exposure to it for that short window of their life they can avoid
>
> > suffering it completely.
>
> > We know this, we can measure what's likely to cause it and we can fix
>
> > it or warn about it. My only surprise is that currently broadcasters
>
> > have a legal responsibility to ensure their content is safe but this
>
> > doesn't stretch other distribution methods like the web and DVDs etc.
>
> > Its also high time a more standard measurement for PSE was agreed so
>
> > that other venders can provide solutions rather than just professor
>
> > Harding!
>
> > Talk about a license to print money!
>
> >
>
> > Sent from Pat's iPhone
>
> >
>
> >
>
> [Non-text portions of this message have been removed]
>
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--
David Dawkins
780-905-9121
dawk2@shaw.ca
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