This two weeks we have learnt about this powerful 3D tracking software, which unlike NUKE, allows all tracking to be customised according to the user’s needs, and has a huge advantage when it comes to tracking faces, which is used by many film and TV studios for special effects on the face as well as the body, especially Marvel
1: The mode of operation of this software is very different from other software, in the beginning you need to open the file in the menu bar by yourself, this is the first step.
2: First you need to adjust the toolbars in the view in the CONFIG interface, select some commonly used, and close some unwanted, then you need to search for VFX CAMERA DATABASE in Google, and then find the camera used to shoot this video in the website, and manually input the parameters into 3DE, so that in the post operation of lens distortion can be a more accurate data.
3: Next you need to manually create a series of tracking points and track them correctly. Of course, these points don’t always track well, and sometimes you need to go and stop them manually, and then re-track them at the right time
4: Finally you need to open the PARAMETER window, press ALT+C to open it quickly, inside it is a 3D interface generated by tracking the points, the more the number of tracking points, the more accurate this result is, of course, you need to minimise the movement of the points so that the result will be very satisfactory (and the post-production of special effects is more convenient and accurate).
5: The next step is to trace the portrait, we need to create a new level in the left toolbar and name it Head. Doing this will give you more order to the process and you’ll be able to make changes at a later stage
Tips: During tracking (environments as well as people) you can turn on the colour controls and lower or raise the contrast and brightness to make the places you are tracking more distinctive, so that your computer can track these points more quickly.
6: When tracking a character’s face, you need to divide the face into several areas, especially the eyes, it’s best to track all the way around the eyes, and you’d better have more than 8 points from the forehead to the nose, so that when you add 3D items later, they’ll be more accurate (the more the better).
7: The next stage is to create the 3D object, select your OBJ file in the interface, then you need to add an F6 window (3D interface) then move and rotate the position of the object and place it in the right place, close the 3D window when you are done. Then select all the tracking points of the face, then match them to the 3D model, now your 3D model will follow the character!
Tips: When tracking very large scenes, you need to sort the tracking points (different colours) so that you can easily make the next corrections