ONE Trick to Improve Your Photogrammetry 

Thanks for the tip! Yes, it is always best to plan well before you fly a project because that will lead to the best possible result.

You're most welcome. Thanks for watching!

Thanks for the comment! Nice idea for the video...I just don't have a copy of Lightroom at the moment, but in time I think there is value in such a comparison.

Hi - yes, I think it is very dependent on the data you are working with. I'd suggest that it is best to know what tools are available and what each would achieve and then make a call based on your specific situation, needs and data. I don't believe there is a magic bullet solution for every case. Hope that helps a little.

Hey Tamas - thanks for watching, I appreciate it and your comment. I used Global Mapper to display things in the video just because it was easier for me to load two different point clouds side-by-side, draw cross sections, evaluate the imagery at the same time etc. Everything was still produced using Metashape using the same workflow I always do. But the point is really that this little tip will make a big difference regardless of what photogrammetry software you use.

Hi, thanks for watching. Off hand, I’m not sure why it has stripped them out, very odd and I haven’t seen it before. I would think there may be a setting where we select “Keep all metadata” or “export attributes” or something similar. (Sorry, not close to a PC to confirm right now) If all else fails, once Rawtherapee is done, copy the orientation metadata into those images from the original images. You could use a tool like Exiftool to do that. It’s free to use and there is a lot of info online about it. Else, in Pix4D, load the original images, export those orientations to a file, then import them with the Rawtherapee images. Both options are the long way around, but will work if you can’t find a setting in Rawtherapee to fix it.

there is an option on rawtherapee on metadata the says "META", right next to "exposure", you need to check all the boxes so the images can bring these info, including gps tags

You’re absolutely correct, doing things properly at the time of capture is always best. But sometimes, it isn’t possible or doesn’t work out how we plan. Or, as is my case where I process data for clients, I have no control over the capture and work with what the client sends me. I find that the adjustments mentioned here often help to improve the input data. It’s always good to have options and ideas to improve our datasets.

@@geospatialtips Agreed!! :)

Thanks Harry! I’ll be honest and say I’ve never seen any of the courses that are out there myself, so I couldn’t recommend one over the other. I see there are many if you Google it, lots of them with very good reviews. That might be a good starting point. I’ve been thinking of creating one myself, but to do it properly will take a lot of time and I’m not yet sure the demand justifies that. I hope you find a good solution and would be keen to hear which you choose.

Hi First, try the approach in this video, which I imagine you may now have done. Then, run your alignment with more tie points and run your mesh/model with higher settings. That should help a bit. If you still don’t have success, you may need to capture more images and various angles, and remember to try and do this in overcast conditions which will give better results.

Hi - they’re all maintained within the file exif data on export. There won’t be any loss. If you use something like Lightroom you have the option to keep all, change it, keep some or remove all. So you won’t have to worry about losing that component of your data, regardless of which software you use.

I've been doing a similar process utilizing Adobe bridge and camera raw. Open bridge to the folder with the images, right click on one image and select open in camera raw. Make the adjustments and close the image. You'll go back to Bridge and see your adjustments in the image. To apply the same adjustments to another image or any selection of images, right click on the one you just did and select develop settings, copy camera raw settings. Now choose another photo, or all of them and paste the camera raw settings. When I first did this I noticed that the adjustments were not reflected when looking at the photos outside of Adobe, for example in the windows image viewer. To fix that I used Photoshop... File, scripts, image processor. That tool allows you to re-save a whole directory of images to another folder. If you choose to save in the same folder it will create a subfolder for the images. The images that it saves to this new folder have the adjustments baked-in. Now I'm curious to see if this Google tool will do better than Adobe...

Great feedback, thanks! There are a few ways to do this and I would think numerous pieces of software that do pretty much the same thing. In the Adobe suite, I use Lightroom quite a lot as I can make all of the adjustments and exports in one software and with just a few clicks. I this video, my aim as to see if I could achieve the same thing with a free and opensource piece of software. Turns out it is possible :)

@@geospatialtips Thank you for all the great education on your channel and also making me want to learn Global Mapper!

i just did it and it kept some information in the exif, not all, it kept the coordinates for example, but it didn't keep the precision values, it's something to take into account if you use metashape and you take the presicion values from the images

Thanks!

Correct! I know Adobe Lightroom can do it basically the same way, in a batch. This is just a free option for those folks that don't have Adobe.