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| If I can add on to what Ross was mentioning, I might also suggest tracking in Mocha and then using a very small wire removal patch parented to the motion tracker to do the actual removing. By having it sample the area around the pixel you can compensate for the motion blur without having to match it with your compositions motion blur settings. Brian Behm Behm Creative Rooster Teeth Productions www.behmcreative.com www.roosterteeth.com On Thu, Feb 23, 2012 at 10:08 AM, Ross Shain <rosss@imagineersystems.com> wrote: > mocha AE is a stand alone planar tracking sfw that ships with After Effects > CS4, CS5 & CS5.5. > mocha is excellent for face tracking and should solve the majority of > tracking woes. Simply track in mocha AE than paste the keyframes back to AE. > Also - mochaImport is an excellent script to assist the workflow. > > You can view lots of free tutorials here: > http://www.imagineersystems.com/videos/ > > Also mocha Pro has some advanced features for patching and removing for > digital makeup or object removal features. AE owners get a special upgrade > price. > > Best, > Ross > > > > > On 23 February 2012 11:00, John Morgan <John.Morgan@slcc.edu> wrote: >> >> Admittedly I’ve not done a lot of motion tracking. >> >> >> >> I’ve got a shot—head and shoulders interview on green screen (720p >> 23.98)—where I failed to notice the little white speck at the edge of a >> nostril. >> >> >> >> Steps done so far: >> >> 1- Exported the first frame of this clip to >> Photoshop>rubber-stamped/fixed the white speck area, then made a small >> selection of the immediate area (with 2 pixel blur)>created and saved to new >> layer>deleted background layer and saved as .PNG file. So my “repair” area >> is a small patch, also 1280x720, surrounded by lots of transparent area. >> >> >> >> 2- Imported the bad clip.mxf (P2 video file) and the patch.png file >> to Ae. Turned on tracking so I’m tracking Position and Rotation. Set the two >> tracking points to 1) exactly on the white spec and 2) a point on an ear> >> defined the target to be the patch.png file and ran the Analyze function to >> set the related keyframes. >> >> >> >> During his interview, as you might assume, there’s quite of bit of head >> shaking. The nose goes all over the place. There’s motion blurring that >> occurs on the clip because of the motion, and that seems to shake the white >> spec tracker loose. It drifts around slightly. >> >> >> >> But here’s the deal. After applying all the motion and rotation keys to >> the patch.png file, the patch locates itself (according to the keyframes) >> several inches away on his cheek. My nostril repair patch now appears to be >> a mole that pretty closely tracks to his cheek rather than tracking to the >> nostril area where it was located at frame 1 when the tracking began. >> >> >> >> My question is: what is the trick to take a set of motion/rotation keys >> attached to the patch.png file, and slide… >> >> >> >> …uhhh…I got it! Change the Anchor Point! Doh! >> >> >> >> OK. So now that’s solved, have I hit Ae’s wall, in that its motion tracker >> is only so good in high motion areas? Any other options to pin that tracker >> down tighter? >> >> >> >> Thanks, >> >> >> >> John >> >> >> >> >> >> >> >> >> This message, and any attachments, is intended only for the use of the >> addressee and may contain information that is privileged and confidential or >> otherwise exempt from disclosure under applicable law. If the reader of this >> e-mail is not the intended recipient, you are hereby notified that any >> unauthorized use, dissemination, distribution or reproduction of this >> message is prohibited. If you have received this communication in error, >> please notify the sender by return e-mail and delete this e-mail and any >> attachments from your system. > > > > > -- > Ross Shain > Chief Marketing Officer > Imagineer Systems - developers of mocha planar tracking and visual effects > tools. > > www.imagineersystems.com > Phone: +1.646.298.6458 | Fax: 646.808.0831 | Email: > rosss@imagineersystems.com > > Find us online: > Facebook | Vimeo | Imagineer Forums | Imagineer Blog > -- not getting enough of my blather? check out http://flabbyironman.blogspot.com or my portfolio at http://behmcreative.com |
