Moire after pan crop of still

bitman wrote on 10/29/2022, 4:06 AM

I did a 3 second 1920x1080 pan crop of a larger still image (no zoom, just diagonal path using pan crop tool) on a 25P (1920x1080) HD project, but this resulted in a terrible moire, especially when viewed on a HD TV.

I admit the still image does have brickwork and pavement that is tricky for moire or aliasing issues, but I did not expect it to be this bad, am I doing something wrong or how can I best fix this? Suggestions are welcome.

Here a link to the image:

https://www.dropbox.com/s/m0rjrpbuy8fa1hs/DSC01360_DxO_SKY.jpg?dl=0

Comments

Yelandkeil wrote on 10/29/2022, 4:20 AM

Filter "Quick Blur" max to 1.0.

Dexcon wrote on 10/29/2022, 4:21 AM

I see what you mean. R click the event and select Properties then try checking Reduce Interlace Flicker and/or Disable Resample and see if either of those or a combination of those - or even Frame Blend - helps.

bitman wrote on 10/29/2022, 5:52 AM

@Dexcon Thanks for the suggestion, although as I expected that does not work, as I presume a still source in a progressive project does not become interlaced by a pan crop.

@Yelandkeil This is a very elegant and usable option in this case. I will mark it as a solution.

As a matter a fact, I tried blur before, but I missed 'quick blur' and the default options of other blur plugins is too strong when I used the mouse scroll to adjust the strength.

Looking now into a few other blur plugins, I am a bit tossed between "quick blur" at maximum or "gaussian blur" tuned down (typed in, as I cannot use scroll mouse lower than 0.1!) to value "0.0010" in both horizontal and vertical. It seems to give similar results. I also have BCC plugins who can blur (which I have to tune down as well). Anyway, a bit blur seems to be the solution, the image in this perspective with the fences, windows, brickwork and pavements is just too sharp to be moved along without blur.

Yelandkeil wrote on 10/29/2022, 7:30 AM

Quick Blur divides pixel into scanline or wipes it off.

The other Blurs are really blurFX. 😁😁

Different concept.

Dexcon wrote on 10/29/2022, 7:35 AM

Quick Blur divides pixel into scanline or wipes it off. The other Blurs are really blurFX. Different concept.

Thank you @Yelandkeil I've learnt something new today - which is good ✔️✔️✔️

Yelandkeil wrote on 10/29/2022, 7:39 AM

👍👍 nice weekend you guys!

Musicvid wrote on 10/31/2022, 8:00 AM

@bitman This is a different approach to your question. When you have time, will you give it a try in your project and let me know if it works?

It does not use any blur or noise filter, only a light clipping mask to tame the in-camera oversharpening, which is typical with Jpeg images. I didn't cut the mask entirely in Vegas.

https://drive.google.com/file/d/12DvsyIhcDlhN2yOFFr5d3WbehrEz5Ud0/view?usp=sharing

amendegw wrote on 10/31/2022, 8:25 AM

This might be worth a try... You could open the still image in Photoshop. Use Filters->Camera Raw->Masking and use the brush tool to brush on Moire Reduction. Good Luck!

...Jerry

Yelandkeil wrote on 10/31/2022, 9:39 AM

@amendegw, it's actually not Moire but "sparrows" between wire poles - as the Sony epoch expressed - if they catch the wire in a line then keep quiet, if not, shock them flying away.

bitman wrote on 11/1/2022, 1:11 PM

@amendegw I am staying clear of the adobe world; I already have too many good photo apps to master and to keep up to date; like DXO, Topaz, Luminar and Zoner, but I'll keep an eye out if I come across something similar, usually those apps tend to add/mimic/borrow or steal each other's features sooner or later!

@Musicvid I tried your reworked image in my project, after rendering (with the same pan crop movement) and viewing on the HD TV it is still very 'moire hell'.

By the way, viewing the render result via the windows 11 default media player usually looks OK, not quite as much moire. But on TV it is pretty bad.

Adding @Yelandkeil solution quick blur did fix it 'good enough' for me on your reworked or my original sample and most importantly when viewed on HD TV.

As a sidenote, the JPG over-sharpening in my case is not in-camera over-sharpening, but my own fault, I shoot stills in raw and process them in post... Apparently, it needs to be fuzzier, or a less demanding subject or use a quick blur when trying to use a diagonal pan...

Musicvid wrote on 11/2/2022, 5:23 PM

I made this 1080p panned render using my toned-down image. I'm getting no moire whatsoever on a 55" Vizio 1080p.. I don't have a good explanation; maybe check your screen "Sharpen" setting? Progressive project and render?

bitman wrote on 11/5/2022, 4:19 AM

@Musicvid My pan is diagonal: left bottom corner to right upper corner. Panning just horizontally always gave me less moire. Your latest example on my PC screen does not give moire, but then again it is horizontal pan. My TV is of a different (older) technology; it is the last generation of Panasonic Plasma 65 inch. Settings like sharpening are all default and THX cinema is active. I usually do not have an issue regarding moire on the TV with "normal" video recorded with RX10 mark3, it was just extreme with the pan crop of a photo still.