Multiframe Download

[Zareen Zapata]

Theaward winning Evertz 7800 family of multiframes provide flexibility in the truest form. With simultaneous processing capability of RF, Fiber, ASI, IP, 3G, HD/SD and more, these frames are designed to grow with the rapid changing needs of the facility and are available in a wide variety to defined below.

Standard features of all 7800series multiframes include dual frame genlock providing stable reference signal across the internal bus to all installed modules which minimizes the cost spent on genlock distribution, global frame status alarming to provide quick alert to operations in the event of a failure, and interchangeable modules between all frames (both processing module and companion rear plate).

Additionally all frames offer hot swappable dual redundant power supplies that allow for power supply and fan replacement without compromising the integrity of critical signal paths and true remote monitoring of all modules and signals within the chassis via a VistaLINK frame controller. This configuration provides the SNMP network communication interface from the VistaLINK Network Management Software to the chassis over the local or wide area network.

I feel like the only point of this is like a backhanded reminder that SOME AE effects now support multiframe rendering. It feels like more of an advertisement than a warning and it would be great if i could turn it off for the reasons I listed.

I'm pretty sure there isn't, as it's very likely tied to polling the respective new API function and it pops up whenever there is no response. So presumably even if an effect were still just chugging along in a single render instance it would be considered safe as long as it produced the correct response, but it would still require an updated build. So however you spin it, as long as you have legacy effects in use it won't go away and I doubt the devs would bother to implement an override since

I'm pretty sure there isn't, as it's very likely tied to polling the respective new API function and it pops up whenever there is no response. So presumably even if an effect were still just chugging along in a single render instance it would be considered safe as long as it produced the correct response, but it would still require an updated build. So however you spin it, as long as you have legacy effects in use it won't go away and I doubt the devs would bother to implement an override since in two years it wouldn't/ shouldn't matter, anyway.

It might be easiest and quickest to create a script that gets called when a new series is stored to check if it a multiframe instance and then convert it to a series of single frame instances, possible removing the original if having both is an issue.

My thinking is that we should write a DICOMMultframePlugin that detects the multiframe SOPClassUIDs and loads them directly, probably using pydicom and custom logic that detects volume geometry (or MultiVolume / Sequence geometry). Ideally the core logic of this sorting should be independent of Slicer it can be re-used in other pydicom applications. The Plugin would be a thin wrapper on this logic.

Alternatively, we should look if we can perhaps reuse plastimatch, already bundled in SlicerRT, at least as an alternative parsing strategy. I did try it for this specific multiframe dataset, and I could not figure out quickly how to make it work, but maybe we should just check with @gcsharp.

That would be great actually - it looks like the license if compatible. We could start by adding this as an extension and then if it works well make it part of the Slicer distribution. From what I can tell the dcm2niix license is compatible.

@Mihail_Isakov sounds good, thanks. But to me this means that de facto reading multiframe DICOM, at least of this specific type, is not supported in ITK as of today. @thewtex please let me know if I am missing something, or if I should try something different.

they always have In-Stack Position Number in reversed order, e.g.

Stack ID / In-Stack Position Number

1 / 121

1 / 120

1 / 119

1 / 118

etc.

Not sure it is a bug, sometimes it is correct, sometimes definitely not. Where take the origin? 1st frame, last frame? GDCM takes always first. Per standard in Legacy Converted dimension organisation is optional, so if there is no dimension organisation - i ignore In-Stack Position Number, load frames one by one (as GDCM returns) and do own validation. If it fails, mark image as non-uniform and disable orientation letters.

@Mihail_Isakov what makes you believe you can rely on in-stack position number for volumetric reconstruction of the geometry? I think those positions can only be useful for visualizing the frames to the user, and one should always sort individual frames geometrically to reconstruct the volume and calculate the origin.

Hi all! I have question on how to record under the multiframe acquisition mode. Whenever I choose to record under the multiframe acquisition mode it only gives me one picture. I have setted the acquisition frame counts to be 500 frames and I also setted the acquisition frame rate to 150hz. I tried to record for 2000ms so I was expecting 300frames but yet it returns only one. Can someone please help me with this problem? Thank you so much!

Welcome back and thanks for reading this blog post. Today I'll be sharing how to make the most of your basic multiframe dies and how use them in a new way you might not have thought of. For this months deal we're creating bundles with all the rainbow colour paper, your card base and sticky specks so that you can assemble these cards in no time at all.

Then I will cut out the shapes in all the rainbow colours in the bundle, being careful not to lose any of the die cuts. I used my blending mat to keep everything together, it makes it much easier to move the die cuts around if I need to. We will need them to assemble all the cards. I also cut out a white background using the largest of the die cuts in the multi frame die set.

To make my life easier I love to use sticky specks to assemble these cards and as a matter face I use sticky specks for most of my crafting now. No mess to clean up and no drying time so this means I can mail them out right away if I want to.

Using the sticky specks I'll place each layer, one at a time, onto the sticky specks sheet close the clear sheet over it, rub gently and then remove the layer and attach to the solid white background I cut out with the largest of the dies form the multi frame die set. I will repeat this step until I have all the layers attached to my background.

Once all the layers are attached, I'll prepare my card base. Using the Joy! Crafts paper that comes in the bundle and the Joy! Crafts Envelope Maker with Punch, I will score my white paper at 4 1/8" to have a fold down the center of the paper. Using a piece of the coloured paper in the bundle I will cut a piece at 3 7/8 " x 5 5/8". I will also use the corner punch to round the right hand corners the base and the coloured paper on some of the cards. Now attach to the card base you made with the white card stock paper.

At this point you can decide what sentiment you would like to put on your card and attach to the front of the card. Attach your multiframe die rainbow piece, either with tape or 3D form tape, to the front of the card and embellish as you wish.

Since you cut out the multifram die in so many colours, remember you can make several cards using all the cut outs. The possibilities are endless in the arrangement of colours that you can make. Have fun with it and enjoy. I really hope you enjoyed these cards and give it a try yourself.

Arguably the largest difficulty to face when observing the Sun from Earth is the perturbing effect of the atmosphere. The turbulent variations of the index of refraction at different layers of the atmosphere produce distortions in the images that severely reduce the quality of the observations. Perhaps the most obvious way of avoiding this effect is to move the telescope to space. Examples of this are Hinode (Suematsu et al. 2008) and/or Sunrise (Solanki et al. 2010), which allowed us to have images of the solar surface with high quality for the whole duration of the missions. Nevertheless, ground-based telescopes hold many advantages. Instruments can be modified and tuned online, which can help reach unprecedented levels of detail in the investigated solar signals. Additionally, ground-based telescopes can be made with significantly larger apertures. Large telescopes are complicated and heavy machines that are better operated at ground level.

Many efforts have been put into compensating for the perturbing effect of the atmosphere. A very successful frontline is the development of active and adaptive optics that measure the wavefront perturbations at a high time cadence and correct it using deformable optical elements. Working at very high frequencies (up to a few kHz), current adaptive optics (AO) systems can very effectively correct for the turbulent layers closer to the telescope, remarkably enhancing the quality of the science data. Even with such corrections, turbulence at higher layers, which typically produce a spatially variant image motion, remains uncorrected. To this end, multi-conjugate AO (MCAO) systems based on several deformable mirrors that are conjugate with the turbulence layer at different heights have been proposed. The first tests for solar observations (Schmidt et al. 2017) have demonstrated that this approach is able to correct a much larger field of view (FOV).

Another frontline is the development of a-posteriori image-correction algorithms. These methods are also routinely applied even in observations carried out with AO systems. The reason is that the corrections carried out by the deformable mirrors are often incomplete and there is still a non-negligible atmospheric residual in the observations. Under the assumption of the linear theory of image formation, the perturbing effect of the atmosphere can be compensated for using optimization methods. In such an approach, the observed image I is computed from the real object, O as

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