Interesting subject Dan.
In my last 18 paid working years I was an expert witness for Ford. During that time we converted from film to digital photography.
With film we had to keep the negatives for proof that the images we testified to were real. With digital we kept the original memory cards. I was aware then of efforts to fool proof digital images but that was still in its infancy.
The truthfulness of my images, both film and digital boiled down to my swearing that the images I presented were a true and honest representation of the subject as I saw it when photographed. Never had any of my images, presented at trial, questioned.
-----Original Message-----
From: "Daniel J. Matyola" danmatyola@gmail.com
Sent: Feb 15, 2021 10:50 AM
To: Pentax-Discuss Mail List pdml@pdml.net
Subject: OT: Photo Forensics
I thought that some here might find this book (which I received as a
Valentine's Day present) of interest.
I met Hany Farid when he gave a talk and demonstration at Dartmouth during
my 45th class reunion. He is an expert in the field, and has a natural
ability to make complex subjects comprehensible.
Photo Forensics (The MIT Press) Paperback – February 26, 2019
by Hany Farid (Author)
The first comprehensive and detailed presentation of techniques for
authenticating digital images.
Photographs have been doctored since photography was invented. Dictators
have erased people from photographs and from history. Politicians have
manipulated photos for short-term political gain. Altering photographs in
the predigital era required time-consuming darkroom work. Today, powerful
and low-cost digital technology makes it relatively easy to alter digital
images, and the resulting fakes are difficult to detect. The field of photo
forensics—pioneered in Hany Farid's lab at Dartmouth College—restores some
trust to photography. In this book, Farid describes techniques that can be
used to authenticate photos. He provides the intuition and background as
well as the mathematical and algorithmic details needed to understand,
implement, and utilize a variety of photo forensic techniques.
Farid traces the entire imaging pipeline. He begins with the physics and
geometry of the interaction of light with the physical world, proceeds
through the way light passes through a camera lens, the conversion of light
to pixel values in the electronic sensor, the packaging of the pixel values
into a digital image file, and the pixel-level artifacts introduced by
photo-editing software. Modeling the path of light during image creation
reveals physical, geometric, and statistical regularities that are
disrupted during the creation of a fake. Various forensic techniques
exploit these irregularities to detect traces of tampering. A chapter of
case studies examines the authenticity of viral video and famously
questionable photographs including “Golden Eagle Snatches Kid” and the Lee
Harvey Oswald backyard photo.
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Ken:
I have admitted photographs into evidence at trial many times over the past
46 years. The legal standard, as you stated is that the witness (whether
the photographer or another person) must testify that the photograph is a
fair and accurate representation of the scene, object or person depicted at
the time in question.
Dan Matyola
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
What? No color glossy photos with circles & arrows and a paragraph on the back
of each one explaining what they were about?
On 2/15/2021 13:05:46, Daniel J. Matyola wrote:
Ken:
I have admitted photographs into evidence at trial many times over the past
46 years. The legal standard, as you stated is that the witness (whether
the photographer or another person) must testify that the photograph is a
fair and accurate representation of the scene, object or person depicted at
the time in question.
Dan Matyola
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
--
Science - Questions we may never find answers for.
Religion - Answers we must never question.
I did mostly non jury trials: General Equity and business litigation .
Judges like things plain and simple. Any markings, on the front or the
back would be done by the witness on the stand.
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
On Mon, Feb 15, 2021 at 4:26 PM John jsessoms002@nc.rr.com wrote:
What? No color glossy photos with circles & arrows and a paragraph on the
back
of each one explaining what they were about?
On 2/15/2021 13:05:46, Daniel J. Matyola wrote:
Ken:
I have admitted photographs into evidence at trial many times over the
past
46 years. The legal standard, as you stated is that the witness (whether
the photographer or another person) must testify that the photograph is a
fair and accurate representation of the scene, object or person depicted
at
the time in question.
Dan Matyola
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
%(real_name)s Pentax-Discuss Mail List
To unsubscribe send an email to pdml-leave@pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and
follow the directions.
https://youtu.be/zPx2t7xoF1k?t=303
On 2/15/2021 17:16:25, Daniel J. Matyola wrote:
I did mostly non jury trials: General Equity and business litigation .
Judges like things plain and simple. Any markings, on the front or the
back would be done by the witness on the stand.
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
On Mon, Feb 15, 2021 at 4:26 PM John jsessoms002@nc.rr.com wrote:
What? No color glossy photos with circles & arrows and a paragraph on the
back
of each one explaining what they were about?
On 2/15/2021 13:05:46, Daniel J. Matyola wrote:
Ken:
I have admitted photographs into evidence at trial many times over the
past
46 years. The legal standard, as you stated is that the witness (whether
the photographer or another person) must testify that the photograph is a
fair and accurate representation of the scene, object or person depicted
at
the time in question.
Dan Matyola
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
--
Science - Questions we may never find answers for.
Religion - Answers we must never question.
That's one of those songs that works a lot better if you are stoned.
"What do they say at a Grateful Dead concert when the pot runs out? This
music sucks!"
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
On Mon, Feb 15, 2021 at 10:40 PM John jsessoms002@nc.rr.com wrote:
https://youtu.be/zPx2t7xoF1k?t=303
On 2/15/2021 17:16:25, Daniel J. Matyola wrote:
I did mostly non jury trials: General Equity and business litigation .
Judges like things plain and simple. Any markings, on the front or the
back would be done by the witness on the stand.
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
On Mon, Feb 15, 2021 at 4:26 PM John jsessoms002@nc.rr.com wrote:
What? No color glossy photos with circles & arrows and a paragraph on
the
back
of each one explaining what they were about?
On 2/15/2021 13:05:46, Daniel J. Matyola wrote:
Ken:
I have admitted photographs into evidence at trial many times over the
past
46 years. The legal standard, as you stated is that the witness
(whether
the photographer or another person) must testify that the photograph
is a
fair and accurate representation of the scene, object or person
depicted
at
the time in question.
Dan Matyola
Dan Matyola
https://tinyurl.com/DJM-Pentax-Gallery
https://tinyurl.com/DJM-Pentax-Gallery
%(real_name)s Pentax-Discuss Mail List
To unsubscribe send an email to pdml-leave@pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and
follow the directions.