Multiplexing: The Cause of Many Seemingly Corrupted Videos

Dear friends, welcome back! Let me just say it was so nice to meet many of you at the Amped User Days last week, even though virtually. Ok, back to us: welcome to a new chapter of the Video Evidence Pitfalls series! Today we’re dealing with multiplexed videos: we’ll briefly look at different kinds of multiplexing, how to recognize them, and how to bring your video exhibit back to a “normal” form. So keep reading!

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Cognitive Bias: Steering Conclusions Irrationally

“Thou shall peer-review your analysis” is one of the well-known (and often ignored) rules of forensic reporting. Sometimes, this important principle gets poorly translated into: “let’s have a colleague peek into my results”. And so, it may happen that an investigator or examiner will ask a colleague for their opinion before submitting the results.

Issue: Being Objective Isn’t That Easy

Let’s imagine John calling Lucy to his desk and asking her: “Can you help me with this license plate? I can read BC 537 but I can’t seem to get the last two characters, perhaps they are “TT”, and I’m also quite uncertain about the first one.”

What should Lucy tell John?

  1. Sure thing! Let me help you with my independent review.
  2. Er… you’ve just burnt me as a potential reviewer of your work.
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Amped FIVE Update 20532: Introducing Variable Motion Deblurring, Freeze Frame, Annotation Keyframing and Much, Much More

We never rest here at Amped Software and this latest update to Amped FIVE has several popular user requests and important changes. Let us get straight down to business and see the new and exciting developments that will make your life easier when investigating images and video.

Variable Motion Deblurring

Most users will know how powerful Motion Deblurring is. The ability to correct a linear blur on an object that is moving past a camera enables you to bring the pixels back together again. It’s quick and easy on a single image but what happens when it’s on a video and the blur changes with every frame due to the position of the object you are attempting to restore? Well, it used to be a long process, now not anymore!

Variable Motion Deblurring allows you to add blur parameters on a frame-by-frame basis, making changes to size, angle, and thickness.

Here we have the filter settings for 3 frames of a vehicle caught on CCTV.

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Compression Artifacts: Hiding or Adding Details to the Scene

Dear friends, welcome to a new video pitfall post! This time we’re dealing with a very sneaky part of video analysis: can we trust what we see? Sometimes, distinguishing the real detail of an object from that of an artifact is not easy. Today’s post will review some of the most common video artifacts and their possible effect on your work.

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Timestamps: Not Always Showing the Right Time

Dear friends, welcome to this week’s video evidence pitfall! In this post, we’re focusing on a crucial element of forensic video analysis: timestamps. Timestamps allow us to locate in time what’s shown in a recording, or reference an event to a specific moment in time. Although virtually all surveillance systems do record timestamps, you should be aware of several pitfalls in accessing and interpreting them, so keep reading!

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Join Us at the Amped User Days 2021 in April

We’re excited to once again bring you Amped User Days 2021. This free virtual event is taking place from April 20-22, 2021 with a rich panel of speakers from Amped Software and experts from the industry. Register today and join us!

REGISTER NOW

It’s always such a great opportunity to catch up with our users from around the world and experts from the industry, to exchange ideas and get product feedback. In this three-day event, you will be able to meet the team behind Amped Software products, ask questions, discuss product improvements, and interact with other Amped users.

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Receiving Video Evidence: Usually It’s Not the Original

Dear friends, welcome to another video pitfalls pill! Today’s post concludes our mini-series about using the “best possible evidence.” In the previous weeks, we always assumed you had control from the beginning. Today, we focus on a different yet widespread scenario: you receive the “evidence” from someone else and are asked to work on that. Want to know the undercover pitfalls in this situation? Just keep reading!

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Screen Capture: It’s Not the Evidence, It’s a Video of the Evidence

Dear friends, welcome! Here we are with one more post for the “best possible evidence” mini-series. In the past two weeks, we’ve seen that you should not film the display and that proprietary players often alter the original pixels. Today, we’ll close this mini-series talking about screen capture. We’ll see that, while being much better than filming, this approach still has its issues and should be used only as a last resort. Keep reading!

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Proprietary CCTV/DVR Players: Often Not Showing the Original Pixels

Dear friends, welcome! This week’s post continues the “best possible evidence” mini-series. Last week, we showed why filming the display is not good. This week, we address a related topic: can we trust proprietary players? You’ll be surprised by the number of pitfalls hidden in the bare playback of a surveillance video, so keep reading!

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Photo Geek Measurement Experiments

Hi everyone, it’s my first blog post here, so let me introduce myself. My name is Gabriele Guarnieri and I am an electronics engineer specialized in Digital Image Processing. I received my degree in 2005 at the University of Trieste, Italy, with a thesis on High Dynamic Range (HDR) photography, at a time when nobody outside a research lab knew what it was. In the following Ph.D. I also worked on medical displays. After a period of research and teaching I moved to work at Amped Software, which I knew well because it began as a start-up from the same laboratory I was working in. At Amped I mainly work on the filters, the image processing algorithms behind them, and the graphical interface of Amped FIVE.

Image processing is both a job and a hobby. I like to take photographs that involve some technical challenge and then process the results with software that I wrote. I also like to experiment with uncommon types of lenses. I am not a professional photographer, and my budget is therefore limited, but sometimes I still get some interesting results with second-hand vintage equipment.

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