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uScope Navigator (Scan) When to use the Predictive Focus Method
uScope Navigator (Scan)

Information in this article applies to:

  • uScope Navigator V4.0 and Later

Article ID: NSC1089 — Created: 9 Nov 2017 — Reviewed: 5 Apr 2018

Question

When should I choose the Predictive focus method to scan my slide?

Answer

The Predictive focus method automatically selects and captures exhaustively focused points (prediction points) from the region of interest. It uses the focal point of each of these prediction points to create a focus map using bilinear interpolation. While scanning the slide, the objective is moved to the predicted focus point for each field in the scanned region. Since the focus points are pre-calculated, scanning is very fast.

If your region of interest is included completely in the interior of your specimen, this is likely the best focus method to choose.

Note
You can adjust the distance between focus points in the device settings. Reducing the distance between points improves the focus algorithm's ability to detect very wavy specimens, but it increases scan time.

Refer to Predictive Focus Device Settings for more information about the Predictive focus method settings.

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