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Author Topic: Export Orthomosaic TIF with JPG compression no alpha channel  (Read 84 times)

ashalota

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Export Orthomosaic TIF with JPG compression no alpha channel
« on: December 04, 2018, 02:00:18 AM »
https://drive.google.com/file/d/1Ih0IQCvB-r3RXqqf-LOGpV-jG6gpdvic/view?usp=sharing

I'm trying to export an orthomosaic. I am using photoscan 1.4.1. The method I am using is the same that previously worked for me on 1.3, but now I am having issues.

When I use the settings shown in that image (export as .tif with jpg compression), the alpha channel is not created in my output .tif files. If I change it to lzw compression, I do get the alpha channel.

Is this expected behavior, or a bug?

Alexey Pasumansky

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Re: Export Orthomosaic TIF with JPG compression no alpha channel
« Reply #1 on: December 05, 2018, 08:06:19 PM »
Hello ashalota,

JPEG compression support only 8-bit three channel data. If you have the image example compressed with JPEG option to TIFF with the transparency, can you please also share it?
Best regards,
Alexey Pasumansky,
AgiSoft LLC