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jwirt
7th of September 2007 (Fri), 22:35
I have used the Stitch Assist mode of my G-6 Powershot to take some pictures of scenes that extend over mulitple frames.

I am able to stitch some of the frames together but there are some image files with unusual names in the resulting pictures.

An example is a set of three files named,

IMG-1474.JPG, IMG-1475.JPG, and STA1476-1.JPG

All three files are generally of the same view but only two of the pictures overlap enough to be stitched. Photoshop Elements 3.0 will not stitch any of them. All three files have a "Date Modified" time of 08/30/2007 8:21AM

Another sequence is,

IMG-1621.JPG, IMG-1622.JPG, STA-1623-1.JPG, STC-1625-1.JPG, STD-1626-1.JPG

In this sequence, the first two pictures are the same shot (two face portraits of the same person, which is obviously a reshoot), while the last 3 are a panorama that it should be possible to stitch together. There is a overlap among the frames. The first two overlap by about 15 percent, but the last two overlap by 75 percent or more. All five pictures have the same "Date Modified" time of 08/30/2007 11:06AM.

I am able to stitch the last two photos together using Photoshop Elements 3.0 but not the others. The first two are portraits of the same two people, obviously shot because the first try did not work (one person blinked). The last three are a panorama of a view out through a large plate glass window into a Japanese garden in Tokyo.

Again, what are these STA, STC, and STD image files?

Although there is overlap between the STA and STC images, it is possible that I delayed the scan or moved the camera laterally instead of simply scanning it. Still there is clearly an overlap of 20 percent or so between the first (STA) and second (STC) images. The perspective is slightly different between the ffirst and second one. I judge all this visually from looking at the photos. I don't recall exactly what the camera setting and shooting steps were.

Any assistance you can provide to help me understand these image files with the STA, STC, etc prefix names would be appreciated.

John Wirt

rowdyred94
10th of September 2007 (Mon), 09:09
Looks like it's adding a consecutive letter to each image to help you align them later (A, B, C, D...). You must've deleted image 1624, which would've been 'B'.

I'd skip all this nonsense altogether and just download autostitch (http://www.cs.ubc.ca/~mbrown/autostitch/autostitch.html).

jwirt
10th of September 2007 (Mon), 21:02
Hmmm..well, no, I didn't delete any photos. What I listed is what came out of the camera.

John

jwirt
10th of September 2007 (Mon), 21:06
What I thought someone might say is that I forgot to push "Set" before the first panorama shot and "Set" after the last one, so that the camera tried to put more photos into the panorama than intended by the "photographer."

Does it matter if one forgets to push "Set" after shooting a panoramic sequence.

From another post, I see that all the Panorama setting does is fix the focus and aperature of the camera to the setting of the first picture. In that case, turning off the camera after shooting the panorama would probably accomplish the same thing as pushing "set" after the last shot.

John

ATucker
12th of September 2007 (Wed), 21:15
From another post, I see that all the Panorama setting does is fix the focus and aperature of the camera to the setting of the first picture.

John

Correct. To add to that, shooting in Stitch-mode also fixes shutter speed and white balance.

I would suggest that you do not use Stitch-mode. Shoot your panos in manual mode instead, using manual focus and, if shooting jpegs, fixing your white balance to something other than Auto. This will give you more creative flexibility than Stitch-mode as Stitch-mode has the camera select these values for your based on the first shot in the pano.

You can feed any series of tifs or jpg's to Photostitch. Photostitch does not require a filename using the Stitch-mode naming convention.

As the other poster suggests, consider using a different stitcher than Photostitch.