By Meade.
I am in this picture, by the way. Near that even harder to see red-hatted man. Click the image and click again to enlarge.
A third click gets you even closer, and the look of the ripples in the water gives you some idea of how the Apple software stitches the photos together to make the panorama. It's some kind of complicated geometry. Can anyone explain it?
पोस्ट्स
४६ टिप्पण्या:
Who is the cute blonde flirting with the fishermen? Summertime at the Lake and the living is easy.
As a matter of fact, I can explain it. The software is doing several things:
1) finding small areas in each photos that are distinct (there are mathematical ways to define distinctness in this setting)
2) finding areas in two photos that match - they don't need to match exactly, but they need to be close - and matching their centers
3) once it has garnered enough matches it places the photos on a sort of virtual layout board, overlapping them as appropriate
4) it the attempts to correct for geometry - these are 2 dimensional representations of a 3 dimensional space after all - and so, similar to the Mercator projection, the geometry may not quite match up.
5) it attempts to blend the photos once it has created this geometry - the further into one photo, the higher percentage of that photo that is used etc.
6) brightness adjustments are made because not only can the photos have different levels of brightness, blending creates another level entirely
7) generally some sort of smoothing is introduced to the photo overall
So where is the software going wrong on the waves? Two likely places, both in step 2. As the waves are at different locations as each photo is taken, it's never going to be able to match them up perfectly. It finds waves that look similar, if it can. And also in the second half of step 2 - matching their centers. The center is not always centered on the brightest point, but often that's sort of the result and since the waves are at different places and angles the sun reflects differently off of them and may put that bright spot in a different place.
It's mostly the first part, with a little of the second. And yes I used the word "garner" intentionally. :)
Those odd water delineations - you're not supposed to notice them.
Report for debugging/reprogramming.
Has a Rousseau quality to it. Is the red-hatted man behind some bushes?
Third click does not enlarge.
Grasshopper,
It's like skimming a stone across the surface, waves perturb the stone's path.
Now, snatch this pebble from my hand and get the fuck out of here!
Unknown, speaking as someone who just graduated from a Broadcast Production Technology program that included a lot of photo/videography practice and theory, you explained that very, very well. Well done, Sir, you should be a teacher.
Nothing better than floating on water and trying to catch a fish!
The camera was angled more downward when it was took the image(s) reproduced in the wavy portion.
Great photo. Nice to see all those people out fishing or boating.
“Near that even harder to see red-hatted man.”
Metaphor alert?
If anyone wants to read about Lt. Colonel Heg whose statue the anarchists dragged and threw in the lake there is a book online which gives the history of the 15th Wisconsin, the regiment Colonel Heg led. The book is The Military History of Wisconsin: A Record of the Civil and Military Patriotism of the State in the War for the Union. It is at Archive.org
https://archive.org/details/militaryhistoryo00quin Chapter 23, p. 613 describes the relevant regimental history.
The regiment was mustered in February 1862 and spent some time moving about the South doing guard duty. It was transferred to Rosecrans' Army, then Thomas's, then Sherman's and participated in all the battles and campaigns along the western edge of the Appalachians - from Stone's River through Chickamauga to the Siege of Chattanooga to the Campaign for Atlanta. They marched hundreds and hundreds of miles. Often they were the first regiment on moves forward, the rearguard during retreats, and the skirmish line before battles. At Chickamauga the 15th held their position with great determination and were the last regiment to retire from the first line in their sector. The Federal line behind them mistook them for advancing Rebels and fired into them as did the advancing Confederates. The regiment scattered and then regrouped and retook the lost line. As Colonel Heg worked for this purpose he was shot, and died the next day. The 15th went on and was among those who took Mission Ridge. There were several Wisconsin regiments in that charge and I was told that the soldiers shouted "On Wisconsin" as they charged up that hill from which later came the college song.
Missionary Ridge.
own goal
Contrary to the polls we read about, and according to John Derbyshire, the betting lines on the upcoming election all strongly favor the president. What does that tell us about the polls?
The car is a white Jaguar. The driver is black. He has surrendered to the police.
This is the end of Black Lives Matter.
I'm starting to think Biden will make it out of the convention, cause nobody else wants it.
It looks like the software connected the horizon to a fata morgana mirage, creating that bizarre hump.
I like the 4th and all but hate the fireworks in the neighborhood. It's really over the top, every family trying to outdo the other.
So I'm going to do the only thing I can, get some Jack and Coke and try to stay up later. I do like my early to bed.
Nothing better than floating on water and trying to catch a fish!
Make sure you're on your back!
Slightly woozy.
A little hair of the dog, Meade? :)
@Wildswan: Amazing.
Make popcorn folks so you are ready for the media response here. Two *white* protestors were hit by a *black* driver on I-5 in Seattle early this am. It is tough to view the videos without coming to the conclusion it was deliberate (navigating around barriers and going the wrong way on an exit ramp).
My prediction: the white protestors are really *black* as they identify that way and the *black* motorist is really *white*.
Kimberly Guilfoyle, formerly of Fox News and presently working for the Trump Re-election Campaign while attempting to land Don Jr, has tested positive for Covid 19. Supposedly she has not been in close proximity to the president, his son has likely exchanged bodily fluids with her.
No announcement has been made that Junior is self-isolating.
Fabulous military flyover in boston right now. So impressive!
McDonald's dropped the BLM banner (and the complete renaming that the account would change into) from its twitter.
Back to burgers.
So racist.
As to the woozy panoramic photo, the software is matching the stepped stones in the foreground to the shoreline in the background. When enlarged you see the matched steps on the far shore. This is an error on the part of the software engineers.
As to the woozy panoramic photo, the software is matching the stepped stones in the foreground to the shoreline in the background. When enlarged you see the matched steps on the far shore. This is an error on the part of the software engineers.
In-camera Panoramas are usually "all woogeddy" to at least some extent. for a good panorama, take several single pictures - overlapping by about 1/3 and encompassing the entire scene (Maybe a tad more for cropping) and combine the images in any good Post Processing software. If you have'nt the time or inclination, send me the photos to my email & I'll do one for Ya'. Only takes a few minutes.
Since Althouse has vaulted the Times of London paywall, she may wish to dip a toe into their long, long history of the Corona Virus, going back to 2013. It's quite a read.
https://donsurber.blogspot.com/2020/07/media-lied-and-people-really-did-die.html#more
The record will show. By God indeed, the record will show.
We know only to the select few views like this will be allowed the knowledge, and thank God they have carte blanc given us nothing short of Unit 472 barbarism, prog Utopia.
I believe, unlime mere Law Profs ensconsed, America is stronger than its ever been.
Romantic "we're the underdog by God support us in His name" isn't as easy as it once was. Oh, how much their lies gained them. Oh, how can that be lost?
The panorama technique is to pivot the camera or rotate from a single spot rather then sweep the camera in front of you. The tricky part is to maintain the camera at the same level. It gets difficult as the hands and arms move around especially at the end of the shot.
Try a narrower field of view, a panorama not as wide.
R
The idea is "Oh if he responds he is within our OODA loop, so we win" without any concept of what OODA or winning is.
This has, is, and will continue to help Trump in tremendous ways, going forward.
in other news
https://www.telegraph.co.uk/news/2020/07/04/exclusive-clinton-maxwell-inside-story-trip-britain/
Blogger Tank said...
Contrary to the polls we read about, and according to John Derbyshire, the betting lines on the upcoming election all strongly favor the president. What does that tell us about the polls?
It says more about the political leanings of gamblers.
https://medium.com/@ArticlesOfUnity/the-articles-of-unity-f544f930d336
So stupid it just...won't work.
Been waiting for a cafe to post this, but haven't seen one yet, so...
Star Spangled STEEL - Black Rifle Coffee Company
Happy Independence Day!
Happy Independence Day! Someday, hopefully soon, we will all be free.
Back in the day, there was the Cirkut Photo camera to give 360* panoramas.
One local practitioner was J C Coovert. He took many images of rural life among the 'croppers. The LC has a nice collection.
Narr
Low techie
Regarding the I-5 hit and run in Seattle this morning: Not only is the driver Black, but he is also quite literally African-American. He is originally from Eritrea. Or what the Left will call a White Supremacist.
I am surprised Seattle's alt-lefty paper The Stranger isn't on the I-5 hit and run story. They might need a few days to get the racial angle right.
GingerBeer: "Regarding the I-5 hit and run in Seattle this morning: Not only is the driver Black, but he is also quite literally African-American. He is originally from Eritrea. Or what the Left will call a White Supremacist."
Inga will be along shortly to explain to you that he is a White-Black White Supremacist Boogaloo influenced by Steve Bannon.
I lock my elbows into chest and pivot when I try to take panoramas. I don’t look at the picture on my screen only the line that establishes my horizon.
Bandon Dunes 7/4/16. My husband would be able to tell me the specific course and hole, but he’s out golfing right now.
The clarity of the flowers - it looks like photo stacking as well as stitching. Very interesting.
Guilfoyle, becoming sick sure makes Gadlfy happy. Strange response, joy at the illness of another human.
But Gadfly doesn't understand rational people that think logically. Like me. We are at home alone, rather than at our Grandsons Birthday party. Haven't missed their birthday since the day they were born. We found out Thursday, the wifes hair dresser tested positive 13 days ago.
Because there are several family members that range from 70 to past 90, we decided not to expose them.
We are not mask wearers, keep our distance, dine out a couple times a week. We are prudent, not obsessive.
I also paid attention to Fauci. He informed me the lockdown and isolation would not prevent infections, or death. Only flatten the curve.
Gadfly are you a science denier?
Unknown and Eric offer excellent advice. I will only add two pointers. I follow the twenty percent overlap rule suggested by Scott Kelby. It allows leading lines and compositonal features to line up better. He also recommends using portrait mode rather than landscape mode to make panoramas. Minimizing the angular spread of the view to be captured is also good as it reduces distortion.
Second, do not use the auto-fill feature for panoramas. This is nice if you do not care about weird repetitions of scenery misplaced in odd areas or you don't want to inspect the image in detail. In the Meade panorama, the odd patches of waves are annoying. Most panoramas do not provide even overlapping images because of slight variations in each individual image used. These are due, as Erik notes, to errors in photo alignment, auto exposure, and different light values in each image across the panoramic selection.
Personally, I do not use a portable to make panoramas relying on a tripod and my old dSLR. Post production is in Photoshop where the Lens Correction and Warp features are truly a blessing. Finally, Image Cropping is necessary to remove the ragged edges of the finished product.
The Photoshop Merge (Autostitch in Canon software) is excellent provided you click on the geometric distortion and vignetting options BUT DO NOT select the Autofill feature.
Using the Warp tool, the horizon problem is easily fixed.
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