Aggressive add-segmentation and some minor frame-seg fixes.

src/MATLAB/+Segmentation/AddNewSegmentHull.m

@@ -32,6 +32,16 @@ function newTrackID = AddNewSegmentHull(clickPt, time)
     
     [newObj newFeat] = Segmentation.PartialImageSegment(img, clickPt, 200, 1.0);
     
+    % Aggressive add segmentation
+    if ( isempty(newObj) )
+        for tryAlpha = 1.25:(-0.05):0.5
+            [newObj newFeat] = Segmentation.PartialImageSegment(img, clickPt, 200, tryAlpha);
+            if ( ~isempty(newObj) )
+                break;
+            end
+        end
+    end
+
     newHull = struct('time', [], 'points', [], 'centerOfMass', [], 'indexPixels', [], 'imagePixels', [], 'deleted', 0, 'userEdited', 1);
     newFeature = struct('darkRatio',{0}, 'haloRatio',{0}, 'igRatio',{0}, 'darkIntRatio',{0}, 'brightInterior',{1}, 'polyPix',{[]}, 'perimPix',{[]}, 'igPix',{[]}, 'haloPix',{[]});
     

src/MATLAB/+Segmentation/FrameSegmentor.m

@@ -5,6 +5,10 @@ function [objs features levels] = FrameSegmentor(im, t, imageAlpha)
     
     levels.haloLevel = graythresh(im);
     level=imageAlpha*levels.haloLevel;
+    
+    level = min(level,0.95);
+    level = max(level,0.05);
+    
     bwHalo=im2bw(im,level);
     
     bwDark=0*im;