Forum : Advice & Critiques

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Topic: First-time plan gone wrong

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This was probably a tough test of the software... So as I understand, it needs texture... well this is probably over the top. It has taken me a lifetime to develope our own little slice of joy that is our house, so I thought I would follow your demo video and go all around the property snapping away.  Imagine a rectangle that is my yard and which is pretty much isolated by trees. I started across the street snapping and overlapping along the periphery until I reached the end of the front border. Then I came down the sidewalk and into the entryway which is like a courtyard. I photo'd all of the inside like a room, then moved down the side into the backyard, repeating this process. I went all around the beds in the center just as is done in the video. Then I photo'd my way up the steps and ramp at the rear to join the outside photos from which I began. It did not link these in order,sometimes going backwards from the direction of record,and wouldn't link borders. Help
Nathanael (Over 1 year ago)
Greetings, and welcome to Photosynth!

I can't see whether you've read the Photography Guide ( http://photosynth.net/howtosynth.aspx ) provided by the Photosynth team, although I did see that you had watched their 'How to' video.

I took a look at your first synth ( http://photosynth.net/view.aspx?cid=aca3241a-4930-45ee-9ff0-0e7252ba09ac ) and obviously you do have 210 photos from around your house, but for what you are trying to synth, I'm afraid that you are spreading the photos too thin. In other words you've got ambition which is great, but it would serve you well to learn to synth single objects like single trees or flower beds first (I have confidence you would catch on very quickly) and then you could build on that to start stringing multiple objects together with more and more photos.

(continued...)
Nathanael (Over 1 year ago)
One technique that is almost certain to work is to imagine taking photos in a circle around every interesting object in your scene. If a property line, fence, or wall prohibits taking a full circle then a semicircle will have to do. 

Understand that while your property is infinitely familiar to you, the computer has never seen it before in its 'life'. The more you can describe to it what single objects in the scene look like from as many sides as possible, the more chance it has of understanding how to correctly arrange your photos taking a path through or around those objects.

As a concrete example, you talked about imagining your yard as a box. This mentality is pretty clear when I traveled through your photos. When it came to the edges of the yard, you just took a flat path down the sides. I suggest that you would have far more cohesive results using multiple overlapping arcs (perhaps even two groups of arcs at different distances) of the same line of plants.
Nathanael (Over 1 year ago)
Learning to synth single objects will teach you how to be efficient with the photos that you do take so that when you want to provide more of a tour of your property you will know how to quickly build a lattice of the surroundings for your tour to nestle inside.

All the best and I hope to see more from you and more of your beautiful surrounds.
Cheers!
Thanx for taking the time Nathanael. Ok, so do I understand that it works better if I stand in the center of a space and shoot all of the periphery and then from, say, the corners toward the center?  Also how do I influence what order the photos are synthed?  It seemed that every 'tunnel' set I did was done in reverse order from how it was shot. That was the most annoying part... getting it to start where I started and link them in order. It seemed to randomly skip all over the property, making it very confusing to any nooby.

Finally, do I delete and completely reshoot, or do I delete and try to add to what I already have, filling in the blanks?
P.S. Notice that I was able to use a thumbnail that was not a part of the synth. It was the only sneaky way I could show what the house was like when I started.
Nathanael (Over 1 year ago)
Well, I'm no great authority... just someone who has watched what others have done and learned a little from my own experimentation, but I'll give you a few more of my thoughts for what they're worth.

First, about the thumbnail: you're absolutely right (and that was very clever for a first time Photosynth user). :)

As to the order that it lists your photos in: since Photosynth can't always put all of the photos together it normally plays the photos that did synth together from the largest group to the smallest, ensuring that the audience gets to see as many of your photos connected as possible. If you'd like it to play them in the order of their names (which should be the order which you took them in unless you renamed the files before uploading), you can do that by choosing "Edit Synth and Highlights" > Settings > Slideshow Order > By Filename. This should display everything in the order you took them, however it may mean jumping between groups of photos.
Well, hey.  That's good to know.  I did download the pdf file and read the directions.  (Duh! When everything fails, read the directions!) Maybe I can interject photos where they will add to the overlap and fill in what needs to be there to synch. Thanx for the advice. I hope that the changes in plant growth will go unnoticed. There will be blossoms missing from pic to pic, so I'd better be quick.

AP
Nathanael (Over 1 year ago)
Viewing your synth in grid mode (use the tilde [~] key or second to last button on the right at the bottom of the synth to switch between 3D and grid) should help you understand what stuck together well and help explain what is going on with the order of the photos.

I don't know how much you can influence the order that the synther actually processes things in, but from what I understand every photo is compared to every other photo before the synth is done, regardless, so adding photos in a different order may change things very slightly but not drastically.

As to whether to scrap what you've got and start over, my first impulse is that if it were me I would try a different approach but I think my curiosity would be too much to resist trying to put both sets together. 'Filling in the gaps' is by no means a poor strategy.
Ok... I'm gonna go play. Thanx again.
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