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However, their solver is sensitive to a parameter termed as Lipschitz constant, which is computational load during the template updating.
The remaining two trackers IVT and L1 cannot cope with severe appearance changes, since the ground truth is not preserved in their template updating.
Then, the outliers can be easily excluded from the template updating, if a relatively strict threshold is adopted, e.g., ( left|right|{beta}_{G_p}Big|{Big|}_1/Big|left|beta right|{Big|}_1>0.8 ).
The "occlusion flag" signals whether the corresponding bounding box is occluded, and then triggers the stochastic mechanism to enlarge the objects' search area to accommodate possible trajectory changes during occlusions, meanwhile stops the template updating to prevent the model from being corrupted by irrelevant data.
But for the template updating, we only apply the second criterion with a stricter threshold, i.e., ( left|right|{beta}_{G_p}Big|{Big|}_1/Big|left|beta right|{Big|}_1>0.8 ), which provides more reliable features and then prevents the template from identity drift.
As the technology matures, users demand better performance against non-ideal (poor) biometric signals, e.g., border crossing systems should be able to capture the biometric signal of the iris or face while patrons are moving or computers should be able to authenticate patron credentials 10 years or more after enrollment without the requirement of template updating.
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Each coded into separate NVivo files, which were merged frequently and the coding templates updated by CC, to reflect new ideas and themes emerging.
The app checks for any template updates and downloads, validates and deploys them automatically, if necessary.
Figure 5 Template update.
The idea of template update was used by the authors in their previous study [79].
A framework is proposed that helps design engineers during the template update process by providing a decision support system and tools in order to support template instances update.
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