Figure 1.

The work flow of the proposed method: a top view of a rosette tray is captured using a color reflex camera (A); the color image is converted to the HSV color space, of which mainly the hue channel is used (B); the histogram of the hue values of the image is calculated (C); the histogram is modeled using a mixture of Gaussians (D). E, Pixels that have a hue value where the Gaussian distribution corresponding to green is higher than any other Gaussian distribution are classified as foreground pixels; all other pixels are classified as background. F, All connected components are labeled. G, All connected components corresponding to the same rosette are merged and relabeled.