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Re: Photo measuring

Ents, Please find attached another test of the photo measuring method. The reference object is a 12-inch segment of a yardstick on the other side of my basement room. The target is a whole yardstick. The reference object is oriented close to 90 degrees to the line of sight. The target is oblique to ...
by dbhguru
Wed Jan 17, 2018 4:43 pm
 
Forum: Measurement and Dendromorphometry
Topic: Photo measuring
Comments: 10
Views: 196

Re: Photo measuring

Joe, Part of what drives our desire to measure trees through photographic images is to check on the dimensions submitted by nominators of champion trees. We require photographs of nominated trees, and a good thing too. Through good photos, we can identify suspect trees, and that literally can save u...
by dbhguru
Mon Jan 15, 2018 9:06 pm
 
Forum: Measurement and Dendromorphometry
Topic: Photo measuring
Comments: 10
Views: 196

Re: Photo measuring

Ents, I'm ready to draft an Appendix to the AF guidelines on photo measuring. I've conducted many tests, and with one testing session gone astray, continue getting excellent results. The attachment brings it all together. The big question is whether or not the photo method can play a useful role in ...
by dbhguru
Sun Jan 14, 2018 4:43 pm
 
Forum: Measurement and Dendromorphometry
Topic: Photo measuring
Comments: 10
Views: 196

Photo measuring

Ents, Don Bertolette and I are working on an appendix to the American Forests tree-measuring guidelines that will deal with taking measurements from photographs. We have a little of this in the current guidelines, but want to go further. The attachment shows where we are now. Any ideas, suggestions ...
by dbhguru
Wed Jan 10, 2018 10:51 am
 
Forum: Measurement and Dendromorphometry
Topic: Photo measuring
Comments: 10
Views: 196

Re: Intro from Western NC

Cindy, Welcome aboard. We'd be delighted to help you ID trees through photos. However, you'll typically need to capture more of the tree than shown in the root section in the photo. My not too confident guess on the image you provided is yellow birch. You can scan back on this BBS and see lots of ph...
by dbhguru
Wed Jan 10, 2018 10:40 am
 
Forum: Post Here First - Introduce Yourself
Topic: Intro from Western NC
Comments: 4
Views: 148

Re: Green Lakes State Park, New York

Elijah,

Great job keeping this extraordinary site on the radar. Are you putting these and other NY measurements into the VA Tech database? If not, I'd be happy to help.

Bob
by dbhguru
Wed Jan 10, 2018 10:34 am
 
Forum: New York
Topic: Green Lakes State Park, New York
Comments: 24
Views: 1696

Re: Complex, old-growth forests may protect some bird specie

Joe, Ray, There are bird species in the East that have higher populations in old growth than young forests. In her books, Joan Maloof lists several species that fit this classification. Dr. Chis Haney, then with the Nature Conservancy, did studies of the warblers in PA old growth back in the 1990s a...
by dbhguru
Tue Dec 19, 2017 9:51 am
 
Forum: Old Growth and Primary Forests
Topic: Complex, old-growth forests may protect some bird species in
Comments: 5
Views: 135

Re: Tallahala Wildlife Mgt Area- Cedar and Quarterliah Creek

Larry,

You da man! A very impressive catch! I imagine that the original old growth forests of Mississippi could have rivaled any in the Southeast.

Bob
by dbhguru
Sun Dec 17, 2017 4:44 pm
 
Forum: Mississippi
Topic: Tallahala Wildlife Mgt Area- Cedar and Quarterliah Creeks
Comments: 2
Views: 79

Re: New Tallest-known Tree for Kentucky

Matt

Kudos for staying up with this tree. Soon KY will enter the 180 Club

Bob
by dbhguru
Sun Dec 17, 2017 12:09 pm
 
Forum: Kentucky
Topic: Re: New Tallest-known Tree for Kentucky
Comments: 11
Views: 835

Re: LiDAR Coverage for the Eastern USA

Michael, There are a few isolated white pine stands in New Hampshire well worth checking out. One is on the Connecticut River just south of where route 10 crosses the river in the town if Claremont. The pines are on sloping ground. I fear LIDAR would over-estimate the heights, but there should be se...
by dbhguru
Sun Dec 10, 2017 12:58 pm
 
Forum: Measurement and Dendromorphometry
Topic: LiDAR Coverage for the Eastern USA
Comments: 44
Views: 986
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