News for hackers. Stuff that matters.

A comment on Shanghai City in panoramic view in 195 gigapixels.

Re:Shanghai City in panoramic view in 195 gigapixels by hugecannon on Wednesday December 19, 2018 @06:39AM (#18714970)
It's interesting seeing how they dealt with moving objects like the boats.

If you scan anti-clockwise until the river is hidden behind the buildings you should see two tour boats with "China Bohai Bank" on the side. One appears to be pulling in and one pull out. If you look at the passengers - it's actually the same boat. If you follow the river clockwise, you'll see two barges carrying dark material. Again, these are the same boat.

I could be mistaken, but it seems in both cases that some 'manual effort' would have been involved to make the picture look natural by placing the duplicates slightly out of position as if they were two individual boats.

[ Parent | on HN ]
Re:Shanghai City in panoramic view in 195 gigapixels by isostatic on Wednesday December 19, 2018 @07:18AM (#18715110)
People too, unless this lady has an identical twin with the same umbrella https://imgur.com/NQ5keHY

I haven't seen any ugly merges between the frames yet, but they can't have been done manually

[ Parent | on HN ]
Re:Shanghai City in panoramic view in 195 gigapixels by namdnay on Wednesday December 19, 2018 @08:34AM (#18715448)
https://imgur.com/a/hgBdkJJ

This one looks a bit dodgy

[ Parent | on HN ]
Re:Shanghai City in panoramic view in 195 gigapixels by scoggs on Wednesday December 19, 2018 @10:43AM (#18716353)
Nah, that's just how it looks there.
[ Parent | on HN ]
Re:Shanghai City in panoramic view in 195 gigapixels by bilbo0s on Wednesday December 19, 2018 @10:23AM (#18716176)
>* some 'manual effort' would have been involved to make the picture look natural...*

????

Of course.

You take these photos by mounting a dSLR on what is essentially a programmable tripod type thingy. It takes a series of photos, and all the images are stitched together in software. Depending on the software used, the algorithms will place things differently. Using different software to stitch the mosaic would result in, (probably), different artifacts in the final image.

[ Parent | on HN ]
Re:Shanghai City in panoramic view in 195 gigapixels by hopler on Wednesday December 19, 2018 @08:05AM (#18715299)
Why would that be manual and not an artifact of movement between snapshots? If it were manual effort,why wouldn't they erase a duplicate?
[ Parent | on HN ]
Re:Shanghai City in panoramic view in 195 gigapixels by hugecannon on Wednesday December 19, 2018 @09:24AM (#18715756)
Look at the barges I mentioned (https://imgur.com/a/ZNaLCuO). Clearly this specific case isn't an automatic stitching of photos. We must agree that there is only one barge and, though not copied, one instance of the boat has been moved out of line from the other. It would look ugly otherwise.

> Why wouldn't they erase a duplicate?

This I don't have a good reason for, which is why i thought this was curious

[ Parent | on HN ]
Re:Shanghai City in panoramic view in 195 gigapixels by bayindirh on Wednesday December 19, 2018 @01:48PM (#18718155)
> Why wouldn't they erase a duplicate?

IMHO to make the scene look more dynamic.

[ Parent | on HN ]
Re:Shanghai City in panoramic view in 195 gigapixels by akerro on Wednesday December 19, 2018 @10:59AM (#18716512)
https://imgur.com/a/g7DoUwg

http://www.jeffrey-martin.com/london-skyline-panorama-2

[ Parent | on HN ]