Join Brian Morse for an in-depth discussion in this video Using the Quad view, part of SynthEyes: Tracking with Survey Data.
- [Voiceover] In this first technique we're going to use the Quad View to help line up and solve our shot. So we already have our survey loaded up. And now we just need to add a shot. So let's go up to the Shot Menu and click on Add Shot. And let's locate Shot_001. And if we find the first frame, double-click that first frame, and it'll load it up. Zero through 242, that's the right frame range.
We do know the Back Plate, so let's put that in. It's 22.3. And everything else can stay at its default. And just press OK. And let's take a look at the shot. So, we have a handheld shot moving in towards the shed. So, what we wanna do is track the same locations that we did in the survey so that we can link them together to solve this shot.
Now, I've already done the tracking. So I'm gonna bring in the tracking. If you go into File, Import, Import 2-D Tracker Paths. And we're gonna look for the shed_1 text. And double-click that. That'll bring in the Import 2-D Tracker Path Settings. Just click on Defaults and that should load up everything. And press OK. So now we have our trackers. And if you wanna know what I did when I originally tracked this shot, after I was done tracking, all I did was go up to File, Export.
And if you go down the list to Export Tracker 2-D Paths. And what that does is it makes a text file. And it has all the information about the trackers. It has the Tracker Name. It has the Frame Number. And where the 2-D location is. So back in SynthEyes, let's head over to the Coordinates tab. Make sure you're in the Quad View. And the way this works is we're going to select the tracker in the Camera View.
And then find the corresponding 3-D location on the survey. So let's zoom in here. You want that one right on the corner. And what we'll do is hold down Command. And then click on the location. And you can see that it makes it a constraint. And you look on the left-land side, you can see it says Identical Place as Tracker9. So now we just need to go through and link up at least six trackers to get a solve.
So we're gonna go through and just select the tracker. Command-click. On all the trackers. That one. And this one's in the back. So Command-click. Okay, so we have eight. So we should have a pretty good solve. And now we're ready to start solving the shot. So let's head over to the Solver. And before we solve, let's just double check.
Go back to the survey. And make sure that it's disabled. Go back to Camera02. And we're gonna wanna change our Solving Method from Automatic to Indirectly. And what that'll do is use the survey as the starting point. And we're gonna turn off Constraint for now. It is Fixed Lens, so we're gonna leave it Fixed Unknown. And we didn't take Distortion Grid, so we'll turn on Calculate Distortion.
And let's just hit Go and see what we get. Press OK. Okay, so you can tell it's not lined up perfect. But let's see what we got. So, it looks like it's got the right camera path, it's just not locked on exactly. And so it's got it in the general location. So now we can put on the Constrain to push everything into place. Let's change this from Indirect to Refine. And then turn on Constrain.
And hit Go. There we go. Now it's pushing all the points together so that they line up with the survey. And then let's see what we got. That looks really good. Although, it seems a little shaky. We do have an Error that's 1.1. So we may wanna add some more trackers to help smooth out this path. So let's do that. Let's over to the Features panel.
And since we did Supervise Tracking, we haven't added any Blips. So let's Blip All Frames. And then we're gonna hit Peel All. To add a whole bunch of trackers. And let's go back over to the Solver. And hit Refine one more time. Just press OK.
Okay, so now we have a higher Error. So let's get rid of some of these trackers so we know. Let's Clean up trackers. Let's hit Fix. And let's also run a Coalesce nearby trackers. Okay, so now we're under one. Let's go to the Quad View and just kind of check out what we've got here.
So, we're just gonna wanna clean up a couple trackers. I can see this on here on the swing. We'll get of the U. Okay. And let's hit Refine again. Let's do one more Clean up trackers and see if we can get a better result. I'm gonna move this down to 10. Hit Fix. Try one more Coalesce nearby trackers.
Okay, so there's three. Let's get those together. And let's hit Refine one more time. Okay, and that looks really good. And that's nice and smooth. And we have our Error values under one. And the model, and the points look like they stick right to the correct position. So that's one of the methods we can use to match our shots to our survey.
- What is a survey shot?
- Tracking a survey shot
- Setting up a survey shot from stills
- Solving shots using the survey
- Solving multiple cameras using the survey