track down test images

[lizzieinvancouver]

I asked a bunch of people. @FrederikBaumgarten got Loïc Schneider to send some images. I uploaded those to the lab google drive under tree rings (and included the email there).

Some more replies:

From Ben Cook:

Neil would obviously know more than me. But I think Dan Griffin at the University of Minnesota would be the one to reach out to:

https://cla.umn.edu/about/directory/profile/griffin9

Last I talked to him, he was using/developing a scanning setup for looking at wood anatomy, which requires really high def images.

Neil Pederson added:

Ben is correct. Dan has the best system as of now that I know of in eastern North America. I’m sure the folks at Padua or WSL can provide some, esp. Georg von Arx.

And Alana Chin:

I have micro fluorescence images of cores and hundreds of CT scans at 1.5-0.3um resolution. And I already have a FCN model to recognize rings and pull out rays for the scans. But maybe not useful? You’re welcome to try!

I second that Georg von Arx has loads of core scans, so does Valentina Vitali at WSL. Steve Sillett here at Humboldt has a huge amount of core scans, I think branch cookies too.

I will now follow up with Dan Griffin. @afong3 @soleil-nocturne123 let me know if you need more.

[lizzieinvancouver]

I followed up with one person (Valentina Vitali), but not super hopeful for what we need ...

Hi Elizabeth,

pleasure to get in contact with you, the world is so small! So, I hope I can be of help. Indeed, I do have some cookies at hand from Scots pine from Vallis, that might be interesting for you. Although I must admit we did not do a x-y stitching, rather we have only taken sections with Skyppy. Nonetheless, more pictures can always be taken. I also know the group from Esther Thuring here at WSL has sampled a lot of cookies for a forest inventory project, but I am not sure how they handled them. Perhaps would be worth asking her too.

I could suggest we have a chat and see what would be the best way forward. Unfortunately, you caught me on my way to my holidays, so I can only offer a meeting in March. But I would be happy to have a chat then.

Let me know. All the best, Valentina

From: Elizabeth M Wolkovich Sent: Monday, February 5, 2024 6:29 PM To: Valentina Vitali Subject: High definition cookie images?

Dear Dr. Vitali,

I am writing based on the recommendation of two colleagues (Alana Chin and Neil Pederson).

I am trying to track down high definition images of tree cookies (and/or cores, but especially cookies). My lab is trying to build off Neil's cool CaptuRing setup in a x and y direction and were trying to work now on the image stitching challenges (and maybe ring detection after that). To do this, some high quality cookie images would be very helpful (we have a few already from Loïc Schneider but are hoping for more to best test our approaches).

I asked Alana and Neil and they both suggested asking you. My lab is happy to try to return the favor in any way (and everything we do will be open source, assuming it is any use to others).

Thank you in advance for any help/ideas, Lizzie

[lizzieinvancouver]

@sandyie I got some test images from colleagues! I will forward you the email so you can download them.

Do we have a backed-up place we are storing practice images for now? If not, I can create a google folder if you want. Let me know.

[lizzieinvancouver]

I have centralized all received images in treerings_samplephotos on my metier Google Drive. I will DELETE this folder some day so do not put important stuff there. The images referenced in this issue above are Pictures_Cores.