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Hi,
New member and Zephyr free version user here. I'm relatively new to photogrametry world, although i have read and watched few tutorials here and there, so i know basic concepts. Recently i did small photogrametry exercise, i did shoot small figurine on a turntable with a camera on tripod on manual settings. Pictures came out in good quality, so i was expecting no issues from Zephyr. And indeed, apart the fact that i had to mask every image, Zephyr did a good job with the set (i used default settings and presets). Mesh was good, but somehow i felt that there isn't enough details in it. I thought - maybe my pictures aren't good enough? Then i noticed image quality index utility and decided to check the pictures in it. I got score from 0.05 to 0.01 for my set. That didn't seem like very big numbers, but i din't know what value is considered a good score, so i googled a bit and found that people are getting scores in range of 1's and 2's. My score clearly leaves alot to be desired. But my photos aren't blurry or featurless. I shot to RAW and feed ORF files directly to Zephyr without processing them. Then simply for comparison, i loaded one file into lightroom and exported it at default settings to TIFF. That image achieved 0.5 score in quality index utility, that's a order of magnitude improvement! How's that can be? I used default settings without additional sharpenning. Next i sharpened that photo in lightroom quite a bit (amount - 75, radius - 2) and there was another huge improvement in quality - score of 1.6! From tutorials i had impression that sharpening for photogrametry is not desirable, as it can introduce unwanted noise, but Zephyr utility tells another story. Could someone shed the light on this matter? Does using unprocessed RAW photos, is a bad idea? Do i need sharpen images when processing them? If so, then by how much?
Here's a link to one RAW photo from my photoset, if that helps: https://www.dropbox.com/s/jfutdjf4o7...13710.ORF?dl=0
New member and Zephyr free version user here. I'm relatively new to photogrametry world, although i have read and watched few tutorials here and there, so i know basic concepts. Recently i did small photogrametry exercise, i did shoot small figurine on a turntable with a camera on tripod on manual settings. Pictures came out in good quality, so i was expecting no issues from Zephyr. And indeed, apart the fact that i had to mask every image, Zephyr did a good job with the set (i used default settings and presets). Mesh was good, but somehow i felt that there isn't enough details in it. I thought - maybe my pictures aren't good enough? Then i noticed image quality index utility and decided to check the pictures in it. I got score from 0.05 to 0.01 for my set. That didn't seem like very big numbers, but i din't know what value is considered a good score, so i googled a bit and found that people are getting scores in range of 1's and 2's. My score clearly leaves alot to be desired. But my photos aren't blurry or featurless. I shot to RAW and feed ORF files directly to Zephyr without processing them. Then simply for comparison, i loaded one file into lightroom and exported it at default settings to TIFF. That image achieved 0.5 score in quality index utility, that's a order of magnitude improvement! How's that can be? I used default settings without additional sharpenning. Next i sharpened that photo in lightroom quite a bit (amount - 75, radius - 2) and there was another huge improvement in quality - score of 1.6! From tutorials i had impression that sharpening for photogrametry is not desirable, as it can introduce unwanted noise, but Zephyr utility tells another story. Could someone shed the light on this matter? Does using unprocessed RAW photos, is a bad idea? Do i need sharpen images when processing them? If so, then by how much?
Here's a link to one RAW photo from my photoset, if that helps: https://www.dropbox.com/s/jfutdjf4o7...13710.ORF?dl=0
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