Beilstein J. Nanotechnol.2018,9, 975–985, doi:10.3762/bjnano.9.91
-based polynomialfitting was proposed to process images with complex background trends. The working principle of the two-step image flattening scheme were presented, followed by the investigation of the influence of a sliding-window size and polynomialfitting direction on the flattened images
. Additionally, the role of image flattening on the morphological characterization and segmentation of AFM images were verified with the proposed method.
Keywords: atomic force microscopy; contour expansion; image flattening; polynomialfitting; sliding window; Introduction
Since its invention, the atomic
required prior to analysis.
In AFM image flattening, individual scan lines are fitted as polynomial curves with the least-square method [29]. The obtained polynomial curves are then subtracted from AFM scan lines to get flattened images. The direct polynomialfitting can cause stripe-type artifacts
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Figure 1:
Schematic diagram of an AFM system and mechanism behind the distortion and artifacts present in AFM...
Beilstein J. Nanotechnol.2012,3, 747–758, doi:10.3762/bjnano.3.84
the masks. This sequence determines the unique 1-D offset for each line. The third block subtracts these 1-D offsets from the raw data and performs a single polynomialfitting on the data within the mask. This background is subtracted from the entire image (raw-offsets). Finally, the height of the
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Figure 1:
This figure shows the cumulative effects of typical distortions on model AFM data. Panels A though ...