accumulation
Live mode only: Duration in milliseconds over which the document has to be detected as partially visible. If on any frame the document is not detected as partially visible, or detected as having a completely different Displacement, the accumulation will be reset. During the accumulation, the document scanner will return a status of ERROR_NOTHING_DETECTED instead of one of the partially visible statuses. Set to 0 to disable this behavior.
In single-shot mode, the document scanner will return ERROR_PARTIALLY_VISIBLE if a document is detected as partially visible, regardless of the value of this parameter.
Default is 700