Filter Manager Flatten Background Process
Filter Manager

Information in this article applies to:

  • uScope Navigator (All Versions)

Article ID: NFL1045 — Created: 5 May 2017 — Reviewed: 14 Dec 2020


What does the Flatten Background process do?


The Flatten Background process analyzes all the images in a tile set for the brightest pixels. It uses this information to build an adjustment image that is applied to each image to flatten the background portion of each image.

Flatten Background Process — Before
Flatten Background Process — Before

Flatten Background Process — After
Flatten Background Process — After

This process is especially useful for removing small illumination gradient effects that, while not apparent on any individual image, are visible when viewing a complete tile set or deep zoom image.

The Flatten Background process works better for large image sets (more than 100 images). Smaller image sets may show signs of artifacts.

  • You can further improve the effects of the Flatten Background process by applying image filters to the whole slide image. For example, apply a median filter (to remove noise) followed by a sharpen filter (to enhance edge definition).
  • The Flatten Background process is applied only when creating a whole scan image.
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