Reducing angle for projection type=Planar possible?  

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pstein
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Reducing angle for projection type=Planar possible?

by pstein » Sat Mar 09, 2013 9:26 am

Is it possible to reduce to angel for projection type=planar by lets say 30%

Currently the projection result is by far too extreme.
I am searching for a way to "soften" the projection angle somehow but keep "Planar" as projection type.

Peter

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mediavets
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by mediavets » Sat Mar 09, 2013 9:57 am

pstein wrote:Is it possible to reduce to angel for projection type=planar by lets say 30%

Currently the projection result is by far too extreme.
I am searching for a way to "soften" the projection angle somehow but keep "Planar" as projection type.

Peter

See:

http://www.autopano.net/wiki-en/action/view/Understanding_Projecting_Modes

http://www.cambridgeincolour.com/tutorials/image-projections.htm
Andrew Stephens
Many different Nodal Ninja and Agnos pano heads. Merlin/Panogear mount with Papywizard on Nokia Internet tablets.
Nikon D5100 and D40, Sigma 8mm f3.5 FE, Nikon 10.5mm FE, 35mm, 50mm, 18-55mm, 70-210mm. Promote control.

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by DrSlony » Sat Mar 09, 2013 10:01 am

Crop = reduce angle

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klausesser
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by klausesser » Sat Mar 09, 2013 12:04 pm

DrSlony wrote:Crop = reduce angle

. . . and lose information. I guess he wants to reduce the FOV without losing information.

Let´s say you have an angle of 120°. That´s very distorted in planar projection.
So the goal is to reduce the 120°-distortions while NOT losing parts of the image-content by cropping.

But nevertheless it would be helpful to hear what he wants to achieve . . . :cool:



best, Klaus
Simplicity is the keynote of all true elegance. Coco Chanel

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by pstein » Sat Mar 09, 2013 12:46 pm

klausesser wrote:But nevertheless it would be helpful to hear what he wants to achieve . . . :cool:

Ok. Here is an example:

At first see the result when rendering with Autopano an "Planar" projection:
Very much black space outside the actual photos

On the opposite see second result created with
MS Image Composite Editor Tool v1.4.4 and "Planar Motion 2" projection mode: Much less black areas.

Moreover Autopanos areas in the corners are very fuzzy/blurry while the one of MSICE are compareable sharp.

How can I achieve a stitch as in MS ICE with Autopano?

Peter




Last edited by pstein on Sat Mar 09, 2013 12:48 pm, edited 1 time in total.

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by mediavets » Sat Mar 09, 2013 1:40 pm

Rectilinear (aka planar) prjection is not suitable for a panorama with such a large HFOV.

Did you try playing with the Pannini projection?
Andrew Stephens
Many different Nodal Ninja and Agnos pano heads. Merlin/Panogear mount with Papywizard on Nokia Internet tablets.
Nikon D5100 and D40, Sigma 8mm f3.5 FE, Nikon 10.5mm FE, 35mm, 50mm, 18-55mm, 70-210mm. Promote control.

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by klausesser » Sat Mar 09, 2013 1:51 pm

pstein wrote:
klausesser wrote:But nevertheless it would be helpful to hear what he wants to achieve . . . :cool:

Ok. Here is an example:

At first see the result when rendering with Autopano an "Planar" projection:
Very much black space outside the actual photos

On the opposite see second result created with
MS Image Composite Editor Tool v1.4.4 and "Planar Motion 2" projection mode: Much less black areas.

Moreover Autopanos areas in the corners are very fuzzy/blurry while the one of MSICE are compareable sharp.

How can I achieve a stitch as in MS ICE with Autopano?

Peter

Hi Peter!

1) two images are ways too few.
2) shooting spherical (which means to move around one point when shooting) and using planar-projection then means to extremely
blow up the outer regions.
For this reason you need to render it smaller - this way you scale down the center instead of scaling up thje outer regions.
3) Your MS ICE example shows fisheye-distortions. Is that what you want?

Andrew pointed out a very good knowledge base you definitely should read!

best, Klaus
Simplicity is the keynote of all true elegance. Coco Chanel


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