512159.fig.007a
(a) One acquired Image
512159.fig.007b
(b) Hough Space
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(c) two candidate ball regions
Figure 7: (a) One acquired image, (b) the corresponding Hough space, and two candidate ball regions. The region on the left has been properly centered on the ball, whereas the one on the right is relative to a nonball object in the scene corresponding to a high value in the Hough accumulation space.