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Posts Tagged ‘Video Forensic Expert’

Ronald Johnson and Laquan McDonald – WGN9 Chicago Interview

Tuesday, December 8th, 2015

There are two Chicago Police Department shooting videos that have been in the news lately, Laquan McDonald and Ronald Johnson.

On November 24, 2015, police video that captured the shooting of Laquan McDonald in Chicago, Illinois was released to the public, almost 13 months after the incident took place. There has been a public outcry regarding not only the death of McDonald, but also the videos themselves.

Ronald Johnson was shot and killed by police officers in October of 2014 while fleeing into a Chicago public park. It is debated whether Johnson was armed or not. Over a year later, video footage was finally released after months of Johnson’s family pushing for the footage to be made public.

In an interview this morning on WGN Chicago, our lead audio video forensic expert Ed Primeau explained the importance of video in both cases. He also discusses the low quality of video that has been presented to the public, as well as the role of a video forensic expert.

Forensic Audio Enhancement -Equalization

Wednesday, July 1st, 2015

Forensic Audio Enhancement -EqualizationEqualizers can be one of the most important tools to any audio engineer, and especially an Audio Forensic Expert. There are many different types of equalizers with different capabilities, but the core functions are always the same. Equalizers allow the user to increase or decrease the level of different frequency ranges or ‘frequency bands.’ Each frequency band is typically marked by its center frequency, while the width of the band will vary between different equalizers. Some equalizers even allow the frequency band and the width to be adjusted.

Having these controls at your disposal when performing an audio enhancement is crucial. Noise and other extraneous frequency content is usually the biggest issue with audio recordings. Equalizers and filters offer the ability to remove narrow ranges of frequencies so that these noises can, for the most part, be removed from the recording while leaving other frequencies untouched.

When using an equalizer, it’s important to be careful boosting and cutting different ranges. Sometimes removing a certain noise may sound helpful at first, but there could also be a lot of important voice content in the same range. Making the proper adjustments with an equalizer requires both experience with the equipment, critical listening skills, and a lot of trial and error. The more time you spend working with audio and equalizers, the more familiar you will become with different frequency ranges and how to best go about improving the quality of different recordings.

Now listen in with Audio and Video Forensic Expert Ed Primeau as he discusses the use of equalizers in forensic audio enhancements.

20: Body-worn Cameras with Sgt. Bill Tilson

Monday, April 27th, 2015

20: Body-worn Cameras with Sgt. Bill TilsonSgt. Bill Tilson is a police officer with the Coeur d’Alene Police Department in Coeur d’Alene, Idaho. He has been working in the department since September 2002 and began working with body-worn cameras in 2012 when the department began issuing them to officers. He received a Bachelors degree in Criminal Justice and Corrections from Lewis-Clark State College and an Associates degree in Criminal Justice and Law Enforcement Administration from the College of Southern Idaho.

Sgt. Tilson has seen first hand the benefits of body-worn cameras in law enforcement and has been a major part of their integration into the Coeur d’Alene Police Department. He has also dealt with many of the struggles that police departments are facing with the large amount of video that is being captured by these body cameras.

Now listen in with Ed Primeau and Sgt. Bill Tilson as they discuss the benefits of body-worn cameras, the issues with storing the video, chain of custody procedures, and Federal standards for maintaining the video evidence.

photo credit: USCP4.NSM.Rally.USCG.WDC.19apr08 via photopin (license)

18: Creating Video Work Product as an Audio Video Forensic Expert

Friday, February 27th, 2015

18: Creating Video Work Product as an Audio Video Forensic ExpertVideo work product is a way to document forensic investigations, like evidence recovery, for reference at a later date. Processes and procedures are documented using a video camera by a forensic expert during a forensic investigation for future use. I have referred back to my video work product many times during the course of a case when I have questions later in the evolution of the case. There are a few different digital video recording platforms that I use when creating ‘video work product’. Each one of these types of systems serves a certain purpose in assisting with a forensic investigation as well as the investigative process.

I personally use the VIEVU LE2 and LE3 body worn cameras. My main use for this body camera in my investigations is recording my forensic process in the field. This includes retrieving evidence from different systems so I can review the video later and include in my report to support the authenticity of my work product and any evidence used in the case.

Another type of digital video camera that I use to produce video recordings is a HDSLR photography camera. In some investigations, a single video recorded perspective may not be sufficient to display the forensic process or document the events. Having another high quality camera with flexibility of perspectives and interchangeable lenses can capture aspects of my investigation that body worn cameras cannot.

Video evidence produced by CCTV systems can help solve crime, as well as reproduce accidents and disasters as they occurred for play back in many different settings. A significant use a video forensic expert has when recording video from a CCTV system is to create an exemplar. This recording is used as a comparison file to the original evidence to help determine the authenticity of the original evidence.

It is a best practice of ours at Primeau Forensics to video record many forensic investigations like the exemplar creation process and evidence recovery so if anyone has any questions during the life of the case, this video work product can be referenced.

Now listen in with Audio and Video Forensic Expert Ed Primeau as he discusses creating Video Work Product for Forensic Investigations.

16: VIEVU Body Cameras with Steve Ward

Thursday, January 22nd, 2015

16: VIEVU Body Cameras with Steve WardSteve Ward is the CEO and founder of VIEVU.  He worked as a police officer in Seattle for 13 years, including 6 years on the SWAT team. Afterwards, Mr. Ward became the Vice President of Marketing and International Sales for Taser International. He has an MBA from the Edinburgh Business School, a Certificate from the University of Chicago’s Graduate School of Business and a Bachelor’s degree from the University of Oregon.  Steve Ward founded VIEVU in 2007, which manufactures high definition, wearable video cameras for law enforcement and private professionals.  These camera systems have become necessary when considering the liability present in law enforcement, and also provide strong evidence for use in court.

Steve Ward is dedicated to making VIEVU cameras the most optimal body cameras for police officers and continues to provide the most updated and cutting edge hardware and software with his cameras.  VIEVU currently provides body cameras to 16 different countries and is one of the leading companies providing body worn cameras in the United States.

Now listen in as Ed Primeau and Steve Ward discuss VIEVU and the growing need for body camera video in law enforcement.

14: Video Surveillance with David Spreadborough

Thursday, December 11th, 2014

14: Video Surveillance with David SpreadboroughDavid Spreadborough is a CCTV investigator and a police officer for the Cheshire Police Department in Cheshire, England.  He has been a part of the police force for 23 years and began his video forensic career in 2003.  David is a member of the Law Enforcement & Emergency Services Video Association International (LEVA), the National Policing Improvement Agency (NPIA), the CCTV National Standards Forum and he sat on the Association of Chief Police Officers (ACPO) Working Group for CCTV.  David has taken multiple training courses covering Forensic Video Analysis, CCTV installation and retrieval and Multimedia Evidence Processing. He focuses on CCTV video evidence and has spent the last few years working with CCTV manufacturers to improve the quality of systems as well as the installation and accessibility for law enforcement.

Up until November of 2014, David was the Senior Officer within the Visual Forensic Unit in the Cheshire Police Department and oversaw all major crime video investigations in the department.  It was then decided that Police Officers could no longer hold Forensic positions within the department.  David is currently looking forward to finding new ways to use his expertise as a Forensic Video Investigator and welcomes anyone who is interested in learning more about the field to contact him.

David is dedicated to the development of Forensic Video Analysis and working with new technology to improve the field.  If you would like to contact David, you can find him on linkedin.

Now listen in as Audio and Video Forensic Expert Ed Primeau and Officer David Spreadborough discuss the importance of CCTV systems for law enforcement, the advancements made in video surveillance over the last decade and the challenges being faced by Video Forensic Experts today.

12: Video Forensics with Dorothy Stout

Monday, December 1st, 2014

12: Video Forensics with Dorothy StoutDorothy Stout is a Video Forensic Expert and owner of Resolution Video Inc.  She has been analyzing video since 1998 and has testified in all levels of courts in the United States.  Dorothy received her Bachelor degree in Psychology and her Masters in Forensic Science and began her career at the US Postal Inspection Service.  She has also performed Video Analysis for the US Department of Defense Computer Forensic Laboratory and has worked with the International Association of Chiefs of Police and the Security Industry Association.  Resolution Video Inc. was founded in 2004 and has continued to provide audio and video enhancement, analysis, authentication and training services for law enforcement agencies.  Dorothy is currently an adjunct professor at George Washington University, the University of Indianapolis, and the British Columbia Institute of Technology. She also teaches training workshops around the country on both Audio and Video Forensic work.

Dorothy Stout makes sure her company demonstrates integrity, impartiality, diligence and professionalism in their work, which has made her one of the leading Video Forensic Experts in the country. If you would like to contact Dorothy or Resolution Video, they can be reached online at resvid.com or by phone at 703-759-7803.

Now listen in as Dorothy Stout and Ed Primeau discuss the effect video evidence has had on law enforcement, the challenges and limitations faced by Video Forensic Experts and the importance of connecting with other experts when beginning your career as a Forensic Expert.

 

Video Forensic Expert – The Importance of Continuing Education

Friday, October 3rd, 2014

Video Forensic Expert - The Importance of Continuing EducationI have been practicing as a video forensic expert for 30 years. I have experienced and observed hundreds of hours, if not days, of security video. I have performed video forensic testing on analogue and digital security systems. I have even forensically examined cell and smart phone video, tablet video and VHS, Hi8 and 8mm, digital 8mm, digital and analogue beta and even ¾” video (which by the way plays from right to left unlike any other analogue video format). I write this introduction not to impress you, but rather express to you that I have been around the block a few times.

However, this week I experienced something new. I took a continuing education class in ‘Digital Video Processing Techniques’ taught by Dorothy Stout of Resolution Video Inc.

On the first day, we were asked to introduce ourselves and say what we expected to learn from the class. When it was my turn, I introduced myself and said ‘I don’t know what I don’t know. That is why I am here, to learn what I don’t know.’

Any forensic expert who thinks they know everything about their expertise is arrogant, especially in video forensics where technology is constantly changing. Dorothy took our class through three days of very interesting lectures about digital video processing techniques, software training and actual security video hands on assignments. Her demeanor and teaching style in the front of the class made these three days very invigorating. Learning was fun and easy thanks to Dorothy’s experience. She is sought out by government agencies, law enforcement and private practice video forensic experts like myself all over the country for video forensic training.

I learned about software programs, work flow, case management and most importantly, had my confidence boosted because I had already known quite a bit about the various video forensic processes that we covered and practiced.

Anyone with a passion for video forensics should consider taking one of Dorothy’s video forensic classes. I learned a lot and enjoyed the experience.

 

 

 

 

 

 

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