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Author Topic: image quality number  (Read 10184 times)

ptitgibus

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image quality number
« on: July 23, 2018, 01:20:09 PM »
Dear,

I use the tool Estimate Image Quality, and I have some numbers between 0.78 and 1.13. What does it mean ? Which number is the best ? What is the explanation of these numbers ?

Thank you

Mak11

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Re: image quality number
« Reply #1 on: July 23, 2018, 01:42:01 PM »
It's explained in the manual which you can download here:  http://www.agisoft.com/downloads/user-manuals/

Quote
Image quality
Poor input, e. g. vague photos, can influence alignment results badly. To help you to exclude poorly focused images from processing PhotoScan suggests automatic image quality estimation feature. Images with quality value of less than 0.5 units are recommended to be disabled and thus excluded from photogrammetric processing, providing that the rest of the photos cover the whole scene to be
reconstructed. To disable a photo use  Disable button from the Photos pane toolbar.
PhotoScan estimates image quality for each input image. The value of the parameter is calculated based on the sharpness level of the most focused part of the picture.

To estimate image quality

1.Switch to the detailed view in the Photos pane using  Details command from the Change menu on the Photos pane toolbar.
2. Select all photos to be analyzed on the Photos pane.
3. Right button click on the selected photo(s) and choose Estimate Image Quality command from the context menu.
4. Once the analysis procedure is over, a figure indicating estimated image quality value will be displayed in the Quality column on the Photos pane.
« Last Edit: July 23, 2018, 01:44:31 PM by Mak11 »