How much does an average 7 Gigapixels stitch weight, saved to jpeg?
Of course it depends on the overlap, but after looking a couple of samples with roughly 60% overlap I would say around 90ish MB for the JPG and 1 GB for the GeoTiff seems about right.
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Okay, thanks for all quick replies.
I thought the larger the overlap, the better the stitching process, and just that.
I didn't realize that overlap % affects the final image MB size. It has no layers so the image area contains a single pixels layer.
Can you explain please?
Thank you
If you have a 5x5 grid of 10 megapixel images that have 1% overlap, assuming they could be stitched together (they can't) they would occupy 50k x 50k which is probably a 300 MB JPG.
If that same 25 10 megapixel images had 100% overlap, the resultant image would be roughly 10 megapixels and be 5 MB or so in JPG form.
The real things you care about are the GSD (ground sample distance) and the area covered. That will give you your output image resolution.
Overlap reduces the area covered but increases the likelihood of an accurate scene reconstruction.
