วีดีโอ

You can totally do that. You're right, though, that by default Metashape will overwrite the products you've already created. A simple way around that is to just rename the products you want to keep, and then Metashape will create a new one with the default name. Like you, I often play around with different settings, and this is how I keep from losing my work. If I know I'm going to be doing a lot of playing around, or if I'm messing with settings for photo alignment or model/point cloud creation, I might duplicate the chunk so I can "save" my work. Only downside to that is multiple chunks can cause your project files to balloon in size. Hope that helps!

@jasonwkarl Yes sir, it does. Thank you!

Great question. A couple ways you could do this. First would be to just do a "Save As..." for the whole project to make a copy of everything. The other option would be to duplicate the Chunk (from the workspace pane, right-click on the Chunk and select Duplicate). If you only have the sparse cloud, there won't be any other products to select in the next window that pops up, but it will duplicate the model/sparse cloud. I use this technique a lot when I want/need to try things out but also want a backup. Hope this helps!

Oh, and one more thing... If you've got a project with multiple Chunks in it, it's a good idea to take the time and rename them so you can keep them straight. I've accidentally messed things up before because I got Chunk 1, Copy of Chunk 1, Chunk 2, etc. mixed up!

@@jasonwkarl Thank you! I'm really enjoying your videos as I try to learn more and more about using Metalshape. Your channel is a great resource 👍👍👍

That video was shot using Metashape version 1.6.x, but it should be consisent with all of the 1.x Metashape versions. The exercises work pretty well with Metashape 2.x, but there are a few differences between 1.6 and the newer Metashape 2.1.x including some of the menus (e.g., Build Dense Cloud is now Build Point Cloud) that might be confusing.

Thanks for the question. Do you need the individual photos converted to temperature, or an overall orthomosaic? How you set the temperature from the TIR images will depend on what sensor you have. For many TIR sensors like the FLIR Boson sensor in the Autel Evo II Duo 640T, the pixel values are in degrees Kelvin times 100. For others like the old DJI XT2 sensor, the pixel values are in degrees Kelvin times 25. Once you find the right equation for converting the pixel values to temperature, then you can use a raster calculator in a GIS program like QGIS, or do with the raster transform in Metashape. Note, though, that the temperature values can be off by quite a bit. It's not uncommon for us to see temperature differences of 5 degrees C. So, in practice, it would be good to take some temperature measurements of known objects (that can be seen in the imagery) and use those values to better fine tune your TIR temp estimates. Hope this helps! J

Glad you find the videos useful. The P4 RTK is a great drone! The Mavic 2 Pro is still one of the workhorses of our drone fleet. Thermal is good for anything where temperature information is useful - infrastructure inspection, search and rescue, agriculture, water quality, etc. You'll get an elevation surface from thermal images, but given that TIR images are so much lower resolution than even cheap RGB cameras, they're not a great choice for most topographic applications. For use, we're only flying TIR imagery when we need it for a specific project. Hope this helps!

Thanks for the feedback! Glad it was useful.

Thanks for the feedback! Glad you found them helpful. J

That's a great tip - thanks!

Thanks for the correction! I'll look into if there's a way to fix that without having to take down and re-post the video.

@@jasonwkarl No problem, thanks for making these videos! :)

Hi. So sorry for the slow response! Summer is a busy time for us. I've been posting these tutorials on the new Drone Lab website. You should be able to find the .prj file at: uidronelab.org/2024/07/04/close-range-photogrammetry/. Good luck! Jason

Please share me, how to get it csv file?