Steps of quantification system C.
From left to right: pipeline 1, 2, and 3, respectively. From top to bottom: (1) Input image. (2) Input ultrasound image with overlay of pixel classifier likelihood ranging from green to red and Hough transform result in pink. (3) Polar transformed pixel classifier likelihood with overlay of dynamic programming in red. (4) Polar transformed ultrasound image with overlay of dynamic programming in red and repositioned dynamic programming result in green. (5) Ultrasound image with overlay of the highest five percentile repositioned dynamic programming pixels. (6) Ultrasound image with fitted ellipse in green and annotation of the experienced sonographer in red. In this example image, the pipeline that was optimized for the second trimester is automatically selected as the best result, since the edge of this fitted ellipse has the highest median pixel classifier output.