Compensation Methods for Inhomogeneous Illumination in Whole Slide Imaging System

Paulik, Róbert; Elo, Lilla; Kiszler, Gábor; Kozlovszky, Miklós; Molnár, Béla

doi:10.1109/iwobi47054.2019.9114429

Cited by 1 publication

(1 citation statement)

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“…Some researchers applied compensation for fluorescent illuminated slides [10,[24][25][26] while others for brightfield slides [8,9,27] to eliminate the mosaicking of artifacts. A few studies utilized traditional color histogram matching methods [6,[28][29][30] which is the base of the proposed method.…”

Section: Introductionmentioning

confidence: 99%

Regression Based Iterative Illumination Compensation Method for Multi-Focal Whole Slide Imaging System

Paulik¹,

Kozlovszky

Molnár³

2021

Sensors

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Image quality, resolution and scanning time are critical in digital pathology. In order to create a high-resolution digital image, the scanner systems execute stitching algorithms to the digitized images. Due to the heterogeneity of the tissue sample, complex optical path, non-acceptable sample quality or rapid stage movement, the intensities on pictures can be uneven. The evincible and visible intensity distortions can have negative effect on diagnosis and quantitative analysis. Utilizing the common areas of the neighboring field-of-views, we can estimate compensations to eliminate the inhomogeneities. We implemented and validated five different approaches for compensating output images created with an area scanner system. The proposed methods are based on traditional methods such as adaptive histogram matching, regression-based corrections and state-of-the art methods like the background and shading correction (BaSiC) method. The proposed compensation methods are suitable for both brightfield and fluorescent images, and robust enough against dust, bubbles, and optical aberrations. The proposed methods are able to correct not only the fixed-pattern artefacts but the stochastic uneven illumination along the neighboring or above field-of-views utilizing iterative approaches and multi-focal compensations.

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