Figure 5From: Lung segmentation on standard and mobile chest radiographs using oriented Gaussian derivatives filter Output of the GD responses after thresholding. (a) – (g) thresholded responses for θ=0°,30°,60°,90°,120°,150° and 180°, and (h) output of the combined responses after the ‘cleaning’ processes with rule-based algorithms.Back to article page