Customer Project Profile – Lightpoint Scientific
In this post we feature a customer’s workflow using PhotoModeler in vehicle crush analysis and accident reconstruction. Lou Peck, of Lightpoint Scientific and Axiom Forensic, is a long time customer doing Accident Reconstruction and Crush analysis. His team has developed a workflow that uses laser scan data in PhotoModeler to build up crush and accident scene […]
Photogrammetry and Car Crashes
Among photogrammetry’s many useful applications is in the area of car crashes, specifically the reconstruction of car crashes after on-site evidence has been removed. The ability of photogrammetry to remake car accident scenes is tremendously important to the police and forensic specialists who investigate the aftermath of these kinds of events. This is because car […]
New Method for Measuring Movement in Security and Surveillance Video
When you have a sequence of images containing data/evidence spread over several frames recorded from the same position, for example, a series of frames from a fixed security camera, you can use PhotoModeler’s image sequence feature to measure or track objects in the scene over time! Here are some possible uses: Calculating and comparing the […]
Get the Best Use of Your Cameras in Public Safety and Forensic Investigations
A camera is a very common piece of equipment for an officer in investigations, ident, forensics, and reconstruction. The same goes for forensic engineers in private and public practice. We are even seeing cameras in every day public safety use such as body-worn cameras, and cruiser dash-cams. Your camera can do so much more than […]
Can Measurements be Made from Law Enforcement Body-Worn Camera Video?
This is a guest blog post written by collision instructor, and active LE officer, Bobby J. Mullinax. See bio below. Why Use Body-Worn Camera Video for Measurements? Photogrammetry is a technique that uses images and photos to obtain accurate 2D and 3D measurements and diagrams of the real world. A body-worn camera stores a video that […]
Using Photogrammetry in Court
This is a guest article by forensics consultant, and trainer, Dan Mills. Bio below. Anyone in a technical field that brings evidence to court must consider both the evidence they are presenting, as well as the admissibility of their methods. First, a definition of Admissible Evidence: Evidence that is formally presented before the trier of […]
Forensic Photogrammetry: A Case Study
This is a guest article by forensic imaging consultant Mike Mayda. Bio below. Why Use Photogrammetry in Forensics? Photogrammetry can be a very powerful tool in forensic analysis. It is often useful to have an accurate 3D reconstruction of an accident or crime scene, especially in cases where position, distance, and perspective are important. Given […]
With A Camera and a Laser Reconstruct a Crime Scene
Unfortunately, this is an all too common story: The convenience store clerk was alone when a man entered the store. He demanded money and cigarettes. When the clerk refused, the clerk was beaten and then shot, leaving no eyewitnesses to this horrific crime. But there was a ‘witness’ – the store had a single security […]
With a Camera Determine Who Caused a Collision
A New Blog Series We introduce a new blog series called “With A Camera“. With each blog post in this new series we describe an application of close range photogrammetry – that is, 3D measurement and modeling with a camera. The articles will describe significant real-world problems and how photogrammetry was able to uniquely solve […]
Tip 85: Measuring suspect height using a single photo from an unknown camera
Surveillance cameras are ubiquitous in public places. Crimes and/or the suspects participating in them are often captured on one or more of these cameras. Measuring the height of a suspect in a scene is usually a key piece of evidence in identifying the individual. PhotoModeler can be used to accurately measure the height of a […]