Hot answers tagged automation
There is a simple method to automate the process using Photoshop. It could be recorded as an action or scripted. Load all of the images into a stack and take the median of each pixel (there is a built in function to do this, might just be in Photoshop extended though). This should give you an image of just the background. Load up the first image and paste ...
Short answer is no for the reason you've stated: silver grains in black and white film block light in the same manner as dust. Color images are made of dye clouds which are translucent and do not block light. The only defect repair I'm aware of that works on b/w is SilverFast scanning software, which has a feature called SRD (not to be confused with iSRD ...
Photoshop scripts are the best way to achieve this I feel. Google "Photoshop scripts polaroid"....here's one I found that might just be what you're looking for - Polaroid Generator
You can set up an action to select areas that have no image and do a context aware fill. This way you won't need to crop if there is enough information at the edges of your frame and the results are usually great when it works.
I don't believe there is any sort of automatic crop functionality as part of Photoshop CS6's photomerge feature. Another option to consider is that in many cases, content aware fill can do a great job of filling in the vacant areas near the jagged edges, giving you a larger resulting file.
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