Figure 5From: Microarray image analysis: background estimation using quantile and morphological filtersBlock structure in morphological-filtered images compared to quantile filters. Background estimates in the red channel on Slide 1 (rows 1800, ..., 2300 and columns 500, ..., 1000) using morphological opening γ50 × 50 (left) and quantile opening γ50 × 50,{0.2} (right). The quantile filter gives a smoother image. Gray scales are not comparable.Back to article page