def normalise2(self, annot, objs) :
area = float(annot.width * annot.height)
for o in objs :
a = AnnotationFeature()
a.name = o.name
a.parent = annot
a.value = o.area / area
a.save()
def normalise1(self, annot, objs) :
total = {}
labels = list(set(map(lambda x : x.name, objs)))
#labels = ['aeroplane','bicycle','bird','boat','bottle','bus','car','cat','chair','cow','diningtable','dog','food','hand','head','horse','motorbike','person','pottedplant','sheep','sofa','train','tvmonitor'] :
for i in labels :
total[i] = 0
for o in objs :
total[o.name] += o.area
fac = math.sqrt(float(sum(map(lambda x : x ** 2, total.values()))))
for k,v in total.iteritems() :
if v != 0 :
a = AnnotationFeature()
a.name = k
a.value = v / fac
a.parent = annot
a.save()