Marker based alignment in Agisoft Metashape

hello dr. Badillo here I'm going to show you real quickly how to align two chunks in edgy soft metal shape and then merge two chunks and edges off the mat a shape so we're going to first align two chunks and then merge them so the two chunks I'm going to align are actually this top and bottom chunk that I have listed here your screen may not look at the same as mine you may just actually only have top and bottom or something says chunk one chunk two but just ignore the other chunks that are here and focus in on these two for this specific video so I'm gonna go ahead and turn off my little flags here because that's from my marker palette and that way we can see our model and as you can see I have stuff on the bottom of this model and then when I double-click to activate the bottom chunk I've got stuff over here wait for it there we go I've actually cut it away on this chunk so that it's not there but it's not complete you know we don't actually have the top we just have the bottom nice and and rendered so and I've rendered both halves the top and bottom all the way up to texture as you can see here I've got all the way up to texture done and that's necessary for this process of using a marker based alignment so I'm gonna go back to our top there we go and for a marker based alignment you have to find at least three or more distinctive points on your model that can be identified on both the top chunk and the bottom chunk so you have to find places that are going to be easy to find so for instance I've got three of these little critters here I'm gonna put a little point right here in the center the way they do that is to actually go ahead and right-click with your mouse and add marker now nothing is showed up here and the reason why is because we need to actually click on our little flags to visualize the markers see when I click that it says point one and if I go to the reference pane I can see point roll point one is right there and the rest of these targets are the auto-generated targets from my marker palette but we're just going to focus here on point one now that I have point one on this let's see top version or top chunk I'm going to go ahead and switch to the bottom and find the same point so double click to activate the next chunk there it is I'm going to go ahead and select that middle point there add marker it also says point one this is really important to make sure that your points correspond on either chunk so here I have my point one and all the other market pallet auto gents but then if I were to switch back to the top I'm also looking at point one right here in the center ok and now I'm gonna want to actually select a different air a different side of the 3d model for my next point so let's go ahead and do that so let's let's do it's going to be something it shows up on both halves so probably somewhere here in this midsection how about this little guy here so let's choose if this was right-side up this would be the what the left side of the mouth so I'm going to right click add marker that's point two on the left side of the mouth if it was facing right-side up so then I double click here and do the same thing so this might be a little more difficult on yours as it might not be a line in mine that actually shows that they're more or less aligned in 3d space but for some reason you switch back and forth between chunks and it's hard to find the model don't forget that you can go to any of your photos over here right click and hit look through and it brings your model into view also a little something to note it makes navigation a little bit easier if you switch back and forth and things are kind of off-kilter and the models actually in the frame go ahead and double-click the model and it centers it into the little tumble ball here so that's just kind of to help you out so what it where was I let's see I had just that's point one and point two is actually over here on this side over on this guy's mouth and I've already put those two well we need one more point one more point let's I know let's do this corner here oh I know that might be too far below let's do this right at the bottom of this little black little smudge there so go to the next one so on the top side there it is yep the same black smudge actually does show up and I would have to make sure that I am on the correct side of the vessel before committing to this point right click and add marker okay so now we have at least three points there fairly well distributed and so with these three I should be able to run an alignment between the two the two chunks so I'm gonna make sure everything else is clipped off here and just have the three points that I'm gonna be aligning on marked off come up here to work flow which you're used to coming here for the rest of your work flow and actually below this line are the two things that work with merging your chunks so first we align chunks the dialogue comes up here if you have any other chunks that are on this and this little list unclick the ones you're not working with and just have the ones clicked off that you are going to be aligning then you have to go here where it says method and make sure that you are doing a marker based alignment and then once that's all set everything else should gray out and this hit OK should be fairly quick because it's just using your markers and then what we can do is visualize to see if we indeed did get these to align well so this button here will visualize the two tongues two chunks together there we are and so there's a lot going on on your screen sometimes when you're doing this in order to reduce that my advice is to click off the little flags and try to visualize it together this way and sure enough it looks like that bottom is right in where it's supposed to go so it looks good okay check all sides and even the little handles handles look okay there's a little bit of weird overlap going on here and if I really wanted to what I could do is spend a little bit of time putting some more points on there and improving my alignment of the two chunks but just for this demo we're gonna leave it as is and now before we're ready to merge the two chunks we can do some editing here so currently I'm on the top chunk and I want to get rid of all the stuff here on the bottom that's just a mess so I know we have a good amount of overlap so I can pretty much cut away everything from here and above my advice would be actually to if you ran a dense cloud guy would go back to your dense cloud and slice it at the dense cloud all right so I've already done it here where you see that I've taken off the rest of the the model but if you don't know how to do it just grab your little selection tool go in there and just delete hit the delete button after you've selected everything and it'll remove a bunch of those points and so all I have is the top portion that I really want to keep so when I switch to the bottom looks like my bottom chunk is there I had already sliced it before but remember I can slice some more since I've got a lot of that overlap so I'll go ahead and just slice all of that off boom now in the dense cloud since I have both things kind of cleaned up and sliced if I visualize these two things together you should see a whole pot so you can see this whole ceramic vessel now and 360 view at this point you can spend a little time cleaning up if you want to looks like I actually have another chunk floating out there scaled differently but I accidentally merged here but we it's not going to bother anything because it's not actually inside of the of the other model but that happens sometimes if you accidentally leave one of those chunks checked off when you're making the alignment and then lastly what you'll do is merge them so once you've got what you want and you're ready to commit to it you will go up here workflow large chunks make sure just those two chunks that you're willing to merge are checked off and if we're gonna just have our dense clouds and then rerun the rest of it you have that just checked off if you do want your meshes and then just run the texture after that I'll leave that checked off but my advice is to go back to your dense cloud and then rerun the mesh so I mean I might emergency dead the dense clouds from these two chunks yeah and there you go so now we've got that new chunk developed here at the bottom of your list this is the merge chunk that combines both the top and bottom and it looks like a bunch of these you know regions are around it the reason why there's multiple regions is because you're still visualizing those at that alignment essentially so if we uncheck that it becomes cleaner and it's literally just the merged chunks so now we have our full sphere achill view of our object we can spend a little time here maybe cleaning up extraneous points like that there maybe I want to do a little more work right in there getting those points eliminated but then you run the rest of the workflow running a mesh and then running a texture and you should have yourself its full sphere achill view of your object so thanks for watching

Channel: Alex Elvis Badillo

Views: 4,366

Rating: 5 out of 5

Keywords:

Id: Xz27IA-BCcA

Length: 10min 45sec (645 seconds)

Published: Wed Feb 26 2020