AutoPanoPro and Huging = great things

[flomaster]

so here is an equirectangular pano (360 degree shot) and then what I did to it in Hugin to make a mini planet.

Enjoy

-=Jason=-

pano was roughly 57 images stitched together in autopano pro

I then took that pano into Hugin to create the image below

[Nicole]

The planet one is pretty cool looking

[inkista]

Very nice! I really like that you used Hugin to do a stereographic projection--most folks go for the polar variety and it squashes things too much for my tastes.

Slight correction: you have a full 360° pano, but it's not an equirectangular. An equirectangular has 180° vertical coverage. With a true equirectangular, the rectangle has 2x1 proportions. Stilll, in this case, the missing degrees don't matter one bit. Very nice job!

I also love seeing your shadow and backpack on the ground, but if you don't, patching and cloning can work some minor miracles.

[flomaster]

yeah I had my 70-300mm lens on and should have used my 18-135, but the 70 was already on and I was in the lazy mode.

-=Jason=-

[sybren]

Originally Posted by inkista

Slight correction: you have a full 360° pano, but it's not an equirectangular. An equirectangular has 180° vertical coverage. With a true equirectangular, the rectangle has 2x1 proportions.

Funny that, as equirectangular projection is also used for maps of the world, covering the entirety of it.

"Equirectangular" means that it keeps straight lines straight.

Jason, would you care to share with us what you did in Hugin to go from equirectangular to the mini-world?

[inkista]

Originally Posted by sybren

Funny that, as equirectangular projection is also used for maps of the world, covering the entirety of it.

Yes. Equirectangular specfically means equirectangular projection, where a sphere is flattened onto a 2D plane by simply translating the longitude to the x-axis [360°], and the latitude to the y-axis [180°]. There's some very heavy distortion at the north and south poles to the top and bottom of the rectangle.

"Equirectangular" means that it keeps straight lines straight.

I think you're thinking "rectilinear". Equirectangular in this case means that the sphere is projected onto a rectangular grid where the grid lines are equally distant from each other.

Stereographic is a different projection method and another way of representing a sphere in 2D; and the little planet is if you use the bottom of the sphere as your central origin point--you can also make a little sky with a tunnel-like effect if you start at the top of the sphere. This example image starts at the side of the sphere (at Africa):



I also like to use a Peirce quincuncial projection sometimes when I'm remapping panos. And I almost never use Mercator's. All the ways cartographers have been representing the earth in 2D come in pretty handy when you do spherical pano remapping.

Jason, would you care to share with us what you did in Hugin to go from equirectangular to the mini-world?

As a backup, I wrote up a very cursory list of the steps a few years ago. I'm sure Jason can describe it better, though.

[sybren]

Originally Posted by inkista

I think you're thinking "rectilinear". Equirectangular in this case means that the sphere is projected onto a rectangular grid where the grid lines are equally distant from each other.

Ah yes, thanks for the correction and the clear explanation.

[rediguana]

Originally Posted by inkista

All the ways cartographers have been representing the earth in 2D come in pretty handy when you do spherical pano remapping.

Mmmm map porn

We Kiwi's tend to like maps because most of them tend to butcher the country - either distorting it greatly, or not even showing us on the map (as the stereographic projection does). It is hard to find a good map that displays the country somewhere near what it actually looks like (because we're so close to E180/W180 (and don't get me started on the number of mapping solutions that assume northern hemisphere, or crap themselves when they have to deal with the 180 meridian ).

One of my favourite lab experiments for GIS at uni was just projecting a world map in lots of different projections. Kept me amused for ages!

[inkista]

Originally Posted by rediguana

Mmmm map porn

Yup. Isn't it sad that we know this about ourselves? OOo baby. Do that Da Vinci Octant again....

.. One of my favourite lab experiments for GIS at uni was just projecting a world map in lots of different projections. Kept me amused for ages!

This is why Mathmap is a very very dangerous thing. My eyes bugged out the first time I saw someone droste a little planet. Like simple map projections weren't enough, then you have to go and mess with imaginary number math to do Escher effects. We are sooo sick.

And holy cow I'm slow. It just registered;

Originally Posted by flomaster

yeah I had my 70-300mm lens on and should have used my 18-135, but the 70 was already on and I was in the lazy mode. -

OMG. How many shots did you take? Did you hit a gigapixel?

[flomaster]

Originally Posted by sybren

Funny that, as equirectangular projection is also used for maps of the world, covering the entirety of it.

"Equirectangular" means that it keeps straight lines straight.

Jason, would you care to share with us what you did in Hugin to go from equirectangular to the mini-world?

sure I belong to another forum not really related to photography, but it has sever members who are active in the sport of desert racing and anything offroad. we have a photo section which is starting to pick up. anyways here is the link I used to make mine.

http://www.fw-productions.com/movies/huginplanet.wmv
here is the thread the link was found in
http://www.dezertrangers.com/vb/showthread.php?t=51385



-=Jason=-