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The flue gas then enters the absorption unit (or column) where the CO₂ is continuously absorbed (or scrubbed) by the solvent. The absorption process utilizes the reversible chemical reaction of CO₂ with the solvent. The CO₂-lean and clean flue gas leaves the top of the absorber towards the stack. The CO₂-rich solvent is transferred to the desorption unit (or stripper). Hot and partially fresh solvent from the reboiler enters the desorption unit, causing the CO₂ to be stripped from the solvent. As a result, a stream of pure CO₂ is collected at the top of the stripper. The CO₂ lean solvent is then regenerated and circulated to the absorber. The pure CO₂ stream is further processed to the required purity before being compressed, transported, or stored for future use (enhanced oil recovery, chemical synthesis, geological storage, etc.).

Reading time: 15 min This latest post on video conversion explores the critical issue of lossless data extraction from proprietary formats.

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We develop solutions for the analysis and enhancement of images and videos for forensic, security, and investigative applications.

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Reading time: 12 min The Video Formats and Conversion blog series continues with an in-depth look into the history, challenges, and solutions of proprietary data. Often originating from video

Pincushiondistortion

LensdistortionExamples

That suggests that the girl’s body is also distorted. So she may be appearing thinner than she actually is, and her face narrower than it actually is! Not the best image to send out, if you want people to help find her – what’s going on?

We could have used Undistort as well. But as you can see below, the correction would have been less optimal in this case:

The energy requirements for solvent regeneration (heat of desorption, sensible heat, and heat of vaporization) and the correct energy integration of the CO₂ capture unit into the industrial process are key features of the ANDRITZ CO₂ capture offering. Depending on the CO₂ concentration in the flue gas, the required amount of CO₂ to be captured, and other site-specific conditions (steam availability, steam pressure, on-site CO₂ storage, ...), ANDRITZ will design a unique solution to ensure the lowest operating costs for the removal of CO₂ from the flue gas.

As shown in the figure, for an amine-based solvent, the CO₂-rich flue gas from the industrial process first enters a pre-scrubber where it is cooled (or quenched) and further treated to remove certain contaminants (acid gases, particulates, etc.) that would degrade the solvent.

Optical distortion is something that can be corrected quite effectively since there exist accurate mathematical models for the problem. If you are an Amped FIVE user, you have two restoration filters to compensate for optical distortions: Undistort and Correct Fisheye. Which one should you use?

Reading time: 35 min In this post, Martino Jerian, CEO and Founder of Amped Software, breaks down the complex AI Act and explores how it affects the work of

ANDRITZ is accelerating its activities to deploy with its customers technologies reducing carbon dioxide (CO2) emissions.

And that would probably be just fine for the sake of clothes. But, did you notice that walls and all lines, in general, are bent quite a bit in this image?

There are entire books about the optical properties of lenses. In a nutshell: depending on the lens design and quality, you may get several kinds of optical distortions in your image. The common trait of optical distortion, which makes it different than perspective distortion (for which we’ll have a dedicated blog post) is that straight lines become curved in the final image, just like we saw in the pictures above. The two main kinds of optical distortion you may encounter are:

Lensdistortion correctionalgorithm

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Well, if you know that the camera mounts a fisheye lens, you are better served by the Correct Fisheye. While the Undistort uses a more general mathematical model. In our example above, we see that the video comes from a Canary camera, which indeed mounts a fisheye lens. With the Correct Fisheye tool, you can indicate to the software three “curved” lines in the image. Then choose one among the Mapping Functions (if you don’t know this lens parameter, just try all of them and pick the one providing the best visual correction). It’s all done:

Reading time: 30 min Codecs and formats form the bulk of our source material, from both proprietary and standard files.Our Video Formats and Conversion blog series continues with a

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Many high power objective lenses are retractable (i.e. 40XR). This means that if they hit a slide, the end of the lens will push in (spring loaded) thereby ...

In all imaging systems, from expensive DSLR devices to the cheapest CCTV camera, there is a lens (or a system of lenses) whose job is to fit light coming from the world into a tiny grid of pixels (the camera sensor). Lenses are indeed used to bend light since ancient times, well before photography was invented.

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If you don’t have Amped FIVE or some software that can fix distortion at hand, there’s still something you can do. Check whether the subject appears closer to the center of the image in another frame. This way, the impact of optical distortion would be less marked.

Several solvents are available for CO₂ capture by chemical absorption. The most commonly used solvent is based on the primary amine monoethanolamine (MEA) and/or mixtures of secondary/tertiary amines, usually with the addition of promoters such as piperazine.

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Dear loyal readers welcome to this week’s video pitfall post! Today we continue our mission of shedding doubts on whether the aspect of things in your video is actually trustworthy. Last week, we showed the “stretching effect” that is often introduced by various aspect ratio issues. Today, we’re dealing with lens/optical distortion.

In the case of the HPC solvent, the figure would look slightly different as the potassium carbonate operates on a pressure swing absorption/desorption cycle as compared to the amine-based solvent which operates on a temperature swing absorption/desorption cycle.

Barreldistortion correction

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Of course, one would be tempted to just “crop, magnify and annotate”, to get something like this and promptly send it out to the media:

The surfaces of glass plates within the body of phase microscopes are carefully scored to create rings. These rings induce a phase shift in the light ...

Imagine you’re looking for a missing person. You ask the family for a recent picture, and they tell you, “Look, we have a video from our home camera. It shows her just before she gets out for the last time”. Hey, that could be useful, perhaps she still wears the same clothes and that would help the search. “Okay, we’ll take that video!”, you say. And here it is:

Before we say goodbye, one important comment: filters that correct distortion typically assume the optical center to be in the pixel center of the image. That means: never crop the image before compensating for the distortion, as this would make the optical and pixel centers of the image diverge (unless you make a perfectly central crop) and lead to wrong results!

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Optical distortionmeaning

Notice that the ability to automatically compute correction parameters by selecting curved lines makes the process much more objective. It is certainly good for forensic and investigative workflows.

Barrel distortion is normally caused by wide-angle lenses, which are the typical choice for CCTV systems. By using wide-angle or fisheye lenses you can fit a very wide view into the image sensor. So your camera will capture more of the surrounding events. As you can clearly see in the picture at the beginning of this blog post, the camera is able to capture almost the entire room in front of it, with a viewing angle close to 180°. It’s impressive, it’s useful, but it’s also distorted.

From the grid picture above you may also notice that in both types of distortion the effect becomes stronger as you move away from the center of the image. That is a consequence of the fact that the lens is less curved at the center and more towards the outer part. The result is an increasing amount of distortion.

Based on its previous experience with CO₂ capture plants and its expertise with gas-liquid absorbers, ANDRITZ selects the most suitable solvent blend for a given CO₂ concentration in the flue gas and a targeted capture rate. Depending on the customer's solvent preference, ANDRITZ can also design a solution based on hot potassium carbonate (HPC).

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