Image Stitch Experiment - Coin Community Forum

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Author	Replies: 5 / Views: 2,150
brg5658 Pillar of the Community United States 627 Posts	Posted 02/09/2012 10:27 pm Rays image size experiments got me thinking about image sizes. Namely, why should we be limited by any sensor size of a camera with some of the new fancy image stitching software out there. I had never used any of it before, so I thought I would give my Adobe Photoshop CS4 a spin with a little experiment. At the same time, I wanted to try out my newest little lens, the 80mm f/4 Rodagon-P (Printing) lens. I'm not convinced it's really any different from the regular 80 f/4 Rodagon lens, other than the fact that there is a little screw to adjust the aperture, and thus I set it to 5.6 and leave it alone from there. In addition to being a test of the photo-stitch software and my new lens, it also ended up being quite a test for my 2 year old laptop from a memory standpoint. Loading 14 images at about 7-8MB each into a single Photoshop image as layers didn't make it very happy, but it survived. The process went as follows: 1) Take enough images at a higher magnification than can capture the entire coin image. In my case, I ended up with 14 separate images. 2) Align those images. 3) Blend those images together to get rid of the jaggedy transitions and exposure differences. All 14 of the images: The alignment of the images: The blending of the images: The link to final 10,000 x 10,000 pixel image (LARGE FILE -- IF YOU CLICK ON THE LINK EXPECT TO WAIT!) http://brgphoto.com/wp-content/uplo...x10000px.jpg Report this Post to the Staff

biggfredd Rest in Peace United States 9104 Posts	Posted 02/09/2012 11:04 pm What good is a 10k*10k image if you can only see 1% of it at one time? Report this Post to the Staff
brg5658 Pillar of the Community United States 627 Posts	Posted 02/09/2012 11:16 pm If you can only see 1000x1000 px on your monitor, I'd get a bigger monitor. Report this Post to the Staff
CaptainFwiffo Pillar of the Community United States 4132 Posts	Posted 02/10/2012 12:07 am There are lots of uses for a super-high-resolution image. You can print it poster size, for one. Or if you are looking at a small part, you can scroll to an adjacent part without going to a different image. Report this Post to the Staff
Bryan1315 Bedrock of the Community United States 14454 Posts	Posted 02/10/2012 05:24 am doesn't look bad. At first I thought it was going to look like the second picture provided but when I scrolled down and saw it after being blended it really looks pretty good Report this Post to the Staff
brg5658 Pillar of the Community United States 627 Posts	Posted 02/10/2012 09:30 am The example images I'm showing above were stitched together in Adobe Photoshop after each individual image was resized to 1000 pixels wide. It was a "proof of concept" visual display. The "align" phase (step 2) was not great at this decreased image size. But, amazingly, the "blend" phase (step 3) somehow knows how to fix the jagged nature of the aligned images. The full size 10K x 10K pixel linked image used the full-size original images from my camera (Canon 50D 4752x3168px). These images were much larger and the alignment algorithm worked like a dream. The blend algorithm then smooths over the exposure differences and slight mis-matches of image detail, and the final image is almost flawless with no noticeable "boundaries" between component images. Report this Post to the Staff
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