Add Many Trackers Dialog

Add Many Trackers Dialog

動画チュートリアル www.ssontech.com/content/addmany.htm

 

オート・トラッキングして、ショットを解析したあと 、このダイアログ（トラッカー・メニューから開始する）によって、より多くのトラッカーを加えることができます。
ショットの問題があるエリアで正確さを改善したり、トラッカー・メッシュのための頂点としてトラッカー追加を行うのにつかってください。
注：ダイアログとその表示を開始するまで、数秒かかかるかもしれません。
この間、CPUはビジーです。

Tracker Requirements

Min #Frames. Spinner. The minimum number of valid frames for any tracker added.

Min Amplitude. Spinner. The minimum average amplitude of the blip path, between zero and one. A larger value will require a more visible tracker.

Max Avg Err. Spinner. The maximum allowable average error, in horizontal pixels, of the prospective tracker. The error is measured in 2-D between the 2-D tracker position, and the 3-D position of the prospective tracker.

MaxPeakErr. Spinner. The maximum allowable error, in horizontal pixels, on any single frame. Whereas the average error above measures the overall noisiness, the peak error reflects whether or not there are any major glitches in the path.

Only within last Lasso. Checkbox. When on, trackers will only be created within the region swept out by the last “lasso” operation in the main camera view, allowing control over positioning.

Frame-Range Controls

Start Region. Spinner. The first frame of a region of frames in which you wish to add additional trackers. When dragging the spinner, the main timeline will follow along.

End Region. Spinner. The final frame of the region of interest. When dragging the spinner, the main timeline will follow along.

Min Overlap. The minimum required number of frames that a prospective tracker must be active within the region of interest. With a 30-frame region of interest, you might require 25 valid frames, for example.

Number of Trackers

Available. Text display field. Shows the number of prospective trackers satisfying the current requirements.

Desired. Spinner. The maximum number of trackers to be added: the actual number added will be the least of the Available and Desired values.

New Tracker Properties

Regular, not ZWT.Checkbox. When off, ZWTs are created, so further solves will not be bogged down. When on, regular (auto) trackers will be created.

Selected.Checkbox. When checked, the newly-added trackers will be selected, facilitating easy further modification.

Set Color.Checkbox. When checked, the new trackers will be assigned the color specified by the swatch. When off, they will have the standard default color.

Color.Swatch. Color assigned to trackers when Set Color is on.

Others

Max Lostness. Spinner. Prospective trackers are compared to the other trackers to make sure they are not “lost in space.” The spinner controls this test: the threshold is this specified multiple of the object's world size. For example, with a lostness of 3 and a world size of 100, trackers more than 300 units from the center of gravity of the others will be dropped.

Re-fetch possibles.Button. Push this after changes in Max Lostness.

Add. Button. Adds the trackers into the scene and closes the dialog. Will take a little while to complete, depending on the number of trackers and length of the shot.

Cancel. Button. Close the dialog without adding any trackers.

Defaults. Button. Changes all the controls to the standard default values.