Preparing to solve

Learning Resources > Tutorials > Getting Started with Maya > Live > Lesson 1: Track and solve >

Preparing to solve

Are there enough track points for you to solve the camera movement? Follow these instructions to see how you make this decision.

To decide if you are ready to solve for the camera movement

In the Track Summary panel, choose View > Frame All.
For each frame, make sure there are at least four points with graphed tracked data. Experience has shown that four points is the minimum average you need to solve a shot.
In the middle frames, such as frame 135, there is less track data. However, on this frame and all frames in the middle, there are at least four.
Look for large areas of red in each track point’s graph.
Small areas of red are okay. A track point’s graph does not have to be completely green in order to solve. In general, if you do find a large area of red for a point, either retrack over the region or select it in the Track Summary graph and choose Edit > Delete Region.
As a preventive measure, look for blue tick marks in the graphs for flower1 and fenceCorner—the track points you created.
A blue tick mark indicates you moved the track box for that frame. You may have moved it accidentally—for example, if you clicked on the track box to select it. Click on the blue tick mark to go to that frame. Then, in the pointCenteredCamera view, compare the frames next to this frame. A shift as small as one pixel can cause problems when you solve.

If you see a sudden shift between the frames, go to that region in the Track Summary graph, select two or three frames (you can simply estimate), and choose Edit > Delete Region.
Look at the Ready to Solve bar at the bottom of the Track Summary.
It’s mostly green and yellow, with little red. The red area is mostly in the middle because there is less track data there. However, since you meet the minimum number of points, it’s worth trying to solve. You can always add more track points later.