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Initialize From ROM Parameters section
The options in the Initialize from ROM Parameters section enable you to specify the settings that affect how the take is initialized from a loaded ROM take.
For further information, see Initialize from ROM algorithm. Note also that the Tracking Parameters properties also affect the results of the Initialize from ROM algorithm.
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Control |
Description |
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ROM Frame Index |
This value determines which frame of the ROM take is used to initialize the current take when the Initialize from ROM processing step is called. Select the index of the ROM frame in which the 3D position of the facial markers and brim markers is closest to the current frame being initialized. |
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ROM Face Point Tracking Distance |
This value determines how far (in pixels) CaraPost looks from the ROM frame to the current frame of the take when matching points on the face. The higher this value, the further the face points in the ROM frame can be from their positions in the current frame, but increasing this value may also result in more mismatched points between the ROM frame and the current frame. The default is 50 pixels. |
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ROM Brim Point Tracking Distance |
This value determines how far (in pixels) CaraPost looks from the ROM frame to the current frame of the take when matching points on the brim The default is 30 pixels. The higher this value, the further the brim points in the ROM frame can be from their positions in the current frame, but increasing this value may also result in more mismatched points between the ROM frame and the current frame. |
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ROM Max Allowed 3D Point Error |
This value specifies the distance that a 3D point has to be from its expected position in 3D, estimated based upon the locations of its neighboring points in the ROM frame. 3D points that are found at a distance greater than this value from their expected position are regarded as bad points and detections that cause the incorrect position of the point are detached from the point in the current frame. If you increase the value of ROM Max Allowed 3D Point Error, fewer detections (and corresponding 3D points) will be detached (and corresponding 3D points removed) due to being regarded as bad, but a greater number of mismatches may also occur; conversely, if you are getting mismatched points during ROM initialization, try decreasing the value of ROM Max Allowed 3D Point Error. The default is 5mm. Note that for this parameter to have an effect, the Remove Bad 3D Points tracking parameter must be set to its default value of True. |