Uploaded image is flipped

[Steve McGroto]

Hello Frans,

I am encountering a strange issue with the GUI (version 0.7.38 running on Windows 10). When I upload any image it shows up as flipped upside-down. And if I zoom in on the image move the slider bar down (towards the bottom of the screen), the image will pan in the opposite sense (i.e. it scrolls up to see the top of the image). I have tried uploading multiple different images using multiple different filetypes (.png, .jpg, .tiff) with the same result each time. Do you know what is going on? Is this a bug?

I have attached an example. The first image is an example .jpg that I am trying to upload. The second image is a screenshot of the GUI after uploading that image using the option "Upload with manual edge selection".

Thanks

[Frans van den Bergh]

Hi Steve,

This is indeed curious. I just tried your JPEG image on Linux (will test on Windows 10 a bit later), and the orientation was just fine.

What kind of GPU / graphics card are you using? The window component in MTF Mapper that displays the image (and scroll bars) uses OpenGL, so there may be some weird OpenGL issue at work here. But I have not seen this before!

Regards,
Frans

[Steve McGroto]

I am using an NVIDIA Quadro T1000 GPU, but I am running this through a Windows VM so that is limiting my video memory to 256MB. Base memory is 32GB, and 8GB for the VM.

It would be interesting to see if the issue is exclusive the VM or if it affects base Windows as well. My host system has built-in IT restrictions on installing 3rd party software, otherwise I wouldn't bother with the VM.