pot to be used in the CM calculation</span>
0028 <span class="comment">%                   and the orientation  calculation.</span>
0029 <span class="comment">%      alpha:       This is the weighting parameter for the running</span>
0030 <span class="comment">%                   background.  It must be close to 1 for best results.</span>
0031 <span class="comment">%                   0.9 seems like a good value for this, anything less</span>
0032 <span class="comment">%                   seems to degrade S