Example #1
0
    def _updateHypothesesGraph(self, arcFlowMap):
        """
        After running merger resolving, insert new nodes, remove de-merged nodes
        and also update the links in the hypotheses graph.

        This also stores the new solution (`value` property) in the new nodes and links
        """
        # update nodes
        for n in self.unresolvedGraph.nodes_iter():
            # skip non-mergers
            if not 'newIds' in self.unresolvedGraph.node[n] or len(
                    self.unresolvedGraph.node[n]['newIds']) < 2:
                continue

            # for this merger, insert all new nodes into the HG
            assert (len(self.unresolvedGraph.node[n]['newIds']) ==
                    self.unresolvedGraph.node[n]['count'])
            for newId, fit in zip(self.unresolvedGraph.node[n]['newIds'],
                                  self.unresolvedGraph.node[n]['fits']):
                traxel = Traxel()
                traxel.Id = newId
                traxel.Timestep = n[0]
                traxel.Features = self._fitToRegionCenter(fit)
                self.hypothesesGraph.addNodeFromTraxel(traxel, value=1)

            # remove merger from HG, which also removes all edges that would otherwise be dangling
            self.hypothesesGraph._graph.remove_node(n)

        # add new links
        for edge in self.resolvedGraph.edges_iter():
            srcId = self.resolvedGraph.node[edge[0]]['id']
            destId = self.resolvedGraph.node[edge[1]]['id']
            value = arcFlowMap[(srcId, destId)]
            self.hypothesesGraph._graph.add_edge(edge[0], edge[1], value=value)
def test_trackletgraph():
    h = hg.HypothesesGraph()
    h._graph.add_path([(0,1),(1,1),(2,1),(3,1)])
    for i in [(0,1),(1,1),(2,1),(3,1)]:
        t = Traxel()
        t.Timestep = i[0]
        t.Id = i[1]
        h._graph.node[i]['traxel'] = t
    
    t = h.generateTrackletGraph()
    assert(t.countArcs() == 1)
    assert(t.countNodes() == 2)
    assert('tracklet' in t._graph.node[(0,1)])
Example #3
0
    def _updateHypothesesGraph(self, arcFlowMap):
        """
        After running merger resolving, insert new nodes, remove de-merged nodes
        and also update the links in the hypotheses graph.

        This also stores the new solution (`value` property) in the new nodes and links
        """
        
        # update nodes
        for n in self.unresolvedGraph.nodes_iter():
            # skip non-mergers
            if not 'newIds' in self.unresolvedGraph.node[n] or len(self.unresolvedGraph.node[n]['newIds']) < 2:
                continue
            
            # for this merger, insert all new nodes into the HG
            assert(len(self.unresolvedGraph.node[n]['newIds']) == self.unresolvedGraph.node[n]['count'])
            for newId, fit in zip(self.unresolvedGraph.node[n]['newIds'], self.unresolvedGraph.node[n]['fits']):
                traxel = Traxel()
                traxel.Id = newId
                traxel.Timestep = n[0]

                traxel.Features = {'com': self._fitToRegionCenter(fit)}
                self.hypothesesGraph.addNodeFromTraxel(traxel, value=1, mergerValue=n[1], divisionValue=False)
            
            # remove merger from HG, which also removes all edges that would otherwise be dangling
            self.hypothesesGraph._graph.remove_node(n)

        # add new links only for merger nodes
        for edge in self.resolvedGraph.edges_iter(): 
            # Add new edges that are connected to new merger nodes
            if 'mergerValue' in self.hypothesesGraph._graph.node[edge[0]] or 'mergerValue' in self.hypothesesGraph._graph.node[edge[1]]:
                srcId = self.resolvedGraph.node[edge[0]]['id']
                destId = self.resolvedGraph.node[edge[1]]['id']
                
                edgeValue = arcFlowMap[(srcId, destId)]
                
                # edges connected to mergers are set to "not used" in order to prevent multiple active outgoing edges from single nodes. The correct edges will be added later.
                if edgeValue > 0 and not self.resolvedGraph.node[edge[0]]['division']:
                    for outEdge in self.hypothesesGraph._graph.out_edges(edge[0]):
                        self.hypothesesGraph._graph.edge[outEdge[0]][outEdge[1]]['value'] = 0
                     
                    for inEdge in self.hypothesesGraph._graph.in_edges(edge[1]):
                        self.hypothesesGraph._graph.edge[inEdge[0]][inEdge[1]]['value'] = 0
                
                # Add new edge connected to merger node
                self.hypothesesGraph._graph.add_edge(edge[0], edge[1], value=edgeValue)
    def _updateHypothesesGraph(self, arcFlowMap):
        """
        After running merger resolving, insert new nodes, remove de-merged nodes
        and also update the links in the hypotheses graph.

        This also stores the new solution (`value` property) in the new nodes and links
        """
        
        # update nodes
        for n in self.unresolvedGraph.nodes_iter():
            # skip non-mergers
            if not 'newIds' in self.unresolvedGraph.node[n] or len(self.unresolvedGraph.node[n]['newIds']) < 2:
                continue
            
            # for this merger, insert all new nodes into the HG
            assert(len(self.unresolvedGraph.node[n]['newIds']) == self.unresolvedGraph.node[n]['count'])
            for newId, fit in zip(self.unresolvedGraph.node[n]['newIds'], self.unresolvedGraph.node[n]['fits']):
                traxel = Traxel()
                traxel.Id = newId
                traxel.Timestep = n[0]

                traxel.Features = {'com': self._fitToRegionCenter(fit)}
                self.hypothesesGraph.addNodeFromTraxel(traxel, value=1, mergerValue=True, divisionValue=False)
            
            # remove merger from HG, which also removes all edges that would otherwise be dangling
            self.hypothesesGraph._graph.remove_node(n)

        # add new links only for merger nodes
        for edge in self.resolvedGraph.edges_iter(): 
            # Add new edges that are connected to new merger nodes
            if 'mergerValue' in self.hypothesesGraph._graph.node[edge[0]] or 'mergerValue' in self.hypothesesGraph._graph.node[edge[1]]:
                srcId = self.resolvedGraph.node[edge[0]]['id']
                destId = self.resolvedGraph.node[edge[1]]['id']
                
                edgeValue = arcFlowMap[(srcId, destId)]
                
                # edges connected to mergers are set to "not used" in order to prevent multiple active outgoing edges from single nodes. The correct edges will be added later.
                if edgeValue > 0 and not self.resolvedGraph.node[edge[0]]['division']:
                    for outEdge in self.hypothesesGraph._graph.out_edges(edge[0]):
                        self.hypothesesGraph._graph.edge[outEdge[0]][outEdge[1]]['value'] = 0
                     
                    for inEdge in self.hypothesesGraph._graph.in_edges(edge[1]):
                        self.hypothesesGraph._graph.edge[inEdge[0]][inEdge[1]]['value'] = 0
                
                # Add new edge connected to merger node
                self.hypothesesGraph._graph.add_edge(edge[0], edge[1], value=edgeValue)
Example #5
0
    def toHypothesesGraph(self):
        '''
        From a json graph representation (and possibly a json result), 
        set up a hypotheses graph with the respective links.

        WARNING: only builds the structure of the graph at the moment, 
                 features/probabilities are not inserted!
        WARNING: builds the trackletgraph, not the full graph!
        '''
        from hytra.core.hypothesesgraph import HypothesesGraph
        from hytra.core.probabilitygenerator import Traxel

        # set up graph
        hypothesesGraph = HypothesesGraph()
        for s in self.model['segmentationHypotheses']:
            tracklet = self.uuidToTraxelMap[s['id']]
            assert (len(tracklet) > 0)
            traxel = Traxel()
            traxel.Timestep = tracklet[0][0]
            traxel.Id = tracklet[0][1]
            hypothesesGraph.addNodeFromTraxel(traxel, tracklet=tracklet)
            # adding nodes automatically assigns UUIDs, we replace them by the loaded one
            hypothesesGraph._graph.node[(traxel.Timestep,
                                         traxel.Id)]['id'] = s['id']

        # insert edges
        for l in self.model['linkingHypotheses']:
            try:
                srcTracklet = self.uuidToTraxelMap[l['src']]
                destTracklet = self.uuidToTraxelMap[l['dest']]
            except:
                getLogger().warning(
                    "Failed finding {} from JSON['linkingHypotheses'] in uuidToTraxelMap"
                    .format((l['dest'], l['src'])))
            hypothesesGraph._graph.add_edge(
                (srcTracklet[0][0], srcTracklet[0][1]),
                ((destTracklet[0][0], destTracklet[0][1])))

        # insert result
        if self.result is not None:
            hypothesesGraph.insertSolution(self.result)

        return hypothesesGraph
Example #6
0
def test_insertEnergies():
    skipLinkBias = 20
    h = hg.HypothesesGraph()
    h._graph.add_path([(0, 1), (1, 1), (2, 1), (3, 1)])
    for uuid, i in enumerate([(0, 1), (1, 1), (2, 1), (3, 1)]):
        t = Traxel()
        t.Timestep = i[0]
        t.Id = i[1]
        # fill in detProb, divProb, and center of mass
        t.Features['detProb'] = [0.2, 0.8]
        t.Features['divProb'] = [0.2, 0.8]
        t.Features['com'] = [float(i[0]), 0.0]

        h._graph.node[i]['traxel'] = t
        h._graph.node[i]['id'] = uuid

    # set up some dummy functions to compute probabilities from a traxel
    def detProbFunc(traxel):
        return traxel.Features['detProb']

    def divProbFunc(traxel):
        return traxel.Features['divProb']

    def boundaryCostFunc(traxel, forAppearance):
        return 1.0

    def transProbFunc(traxelA, traxelB):
        dist = np.linalg.norm(
            np.array(traxelA.Features['com']) -
            np.array(traxelB.Features['com']))
        return [1.0 - np.exp(-dist), np.exp(-dist)]

    h.insertEnergies(1, detProbFunc, transProbFunc, boundaryCostFunc,
                     divProbFunc, skipLinkBias)

    for n in h.nodeIterator():
        assert ('features' in h._graph.node[n])
        assert (h._graph.node[n]['features'] == [[1.6094379124341003],
                                                 [0.22314355131420971]])
        assert ('divisionFeatures' in h._graph.node[n])
        assert (h._graph.node[n]['divisionFeatures'] == [[1.6094379124341003],
                                                         [0.22314355131420971]
                                                         ])
        assert ('appearanceFeatures' in h._graph.node[n])
        assert (h._graph.node[n]['appearanceFeatures'] == [[0.0], [1.0]])
        assert ('disappearanceFeatures' in h._graph.node[n])
        assert (h._graph.node[n]['disappearanceFeatures'] == [[0.0], [1.0]])

    for a in h.arcIterator():
        assert ('features' in h._graph.edge[a[0]][a[1]])
        srcTraxel = h._graph.node[h.source(a)]['traxel']
        destTraxel = h._graph.node[h.target(a)]['traxel']
        frame_gap = destTraxel.Timestep - srcTraxel.Timestep
        assert (h._graph.edge[a[0]][a[1]]['features'] == [[
            0.45867514538708193
        ], [1.0 + skipLinkBias * (frame_gap - 1)]])
Example #7
0
    def toHypothesesGraph(self):
        '''
        From a json graph representation (and possibly a json result), 
        set up a hypotheses graph with the respective links.

        WARNING: only builds the structure of the graph at the moment, 
                 features/probabilities are not inserted!
        WARNING: builds the trackletgraph, not the full graph!
        '''
        from hytra.core.hypothesesgraph import HypothesesGraph
        from hytra.core.probabilitygenerator import Traxel

        # set up graph
        hypothesesGraph = HypothesesGraph()
        for s in self.model['segmentationHypotheses']:
            tracklet = self.uuidToTraxelMap[s['id']]
            assert(len(tracklet) > 0)
            traxel = Traxel()
            traxel.Timestep = tracklet[0][0]
            traxel.Id = tracklet[0][1]
            hypothesesGraph.addNodeFromTraxel(traxel, tracklet=tracklet)
            # adding nodes automatically assigns UUIDs, we replace them by the loaded one
            hypothesesGraph._graph.node[(traxel.Timestep, traxel.Id)]['id'] = s['id']

        # insert edges
        for l in self.model['linkingHypotheses']:
            try:
                srcTracklet = self.uuidToTraxelMap[l['src']]
                destTracklet = self.uuidToTraxelMap[l['dest']]
            except:
                getLogger().warning("Failed finding {} from JSON['linkingHypotheses'] in uuidToTraxelMap".format((l['dest'], l['src'])))
            hypothesesGraph._graph.add_edge((srcTracklet[0][0], srcTracklet[0][1]), 
                                            ((destTracklet[0][0], destTracklet[0][1])))

        # insert result
        if self.result is not None:
            hypothesesGraph.insertSolution(self.result)
        
        return hypothesesGraph
Example #8
0
def test_trackletgraph():
    h = hg.HypothesesGraph()
    h._graph.add_path([(0, 1), (1, 1), (2, 1), (3, 1)])
    for i in [(0, 1), (1, 1), (2, 1), (3, 1)]:
        t = Traxel()
        t.Timestep = i[0]
        t.Id = i[1]
        h._graph.node[i]['traxel'] = t

    t = h.generateTrackletGraph()
    assert (t.countArcs() == 1)
    assert (t.countNodes() == 2)
    assert ('tracklet' in t._graph.node[(0, 1)])
def test_insertEnergies():
    skipLinkBias = 20
    h = hg.HypothesesGraph()
    h._graph.add_path([(0,1),(1,1),(2,1),(3,1)])
    for uuid, i in enumerate([(0,1),(1,1),(2,1),(3,1)]):
        t = Traxel()
        t.Timestep = i[0]
        t.Id = i[1]
        # fill in detProb, divProb, and center of mass
        t.Features['detProb'] = [0.2, 0.8]
        t.Features['divProb'] = [0.2, 0.8]
        t.Features['com'] = [float(i[0]), 0.0]

        h._graph.node[i]['traxel'] = t
        h._graph.node[i]['id'] = uuid
    
    # set up some dummy functions to compute probabilities from a traxel
    def detProbFunc(traxel):
        return traxel.Features['detProb']

    def divProbFunc(traxel):
        return traxel.Features['divProb']
    
    def boundaryCostFunc(traxel, forAppearance):
        return 1.0
    
    def transProbFunc(traxelA, traxelB):
        dist = np.linalg.norm(np.array(traxelA.Features['com']) - np.array(traxelB.Features['com']))
        return [1.0 - np.exp(-dist), np.exp(-dist)]

    h.insertEnergies(1, detProbFunc, transProbFunc, boundaryCostFunc, divProbFunc, skipLinkBias)
    
    for n in h.nodeIterator():
        assert('features' in h._graph.node[n])
        assert(h._graph.node[n]['features'] == [[1.6094379124341003], [0.22314355131420971]])
        assert('divisionFeatures' in h._graph.node[n])
        assert(h._graph.node[n]['divisionFeatures'] == [[1.6094379124341003], [0.22314355131420971]])
        assert('appearanceFeatures' in h._graph.node[n])
        assert(h._graph.node[n]['appearanceFeatures'] == [[0.0], [1.0]])
        assert('disappearanceFeatures' in h._graph.node[n])
        assert(h._graph.node[n]['disappearanceFeatures'] == [[0.0], [1.0]])
    
    for a in h.arcIterator():
        assert('features' in h._graph.edge[a[0]][a[1]])
        srcTraxel = h._graph.node[h.source(a)]['traxel']
        destTraxel = h._graph.node[h.target(a)]['traxel']
        frame_gap = destTraxel.Timestep - srcTraxel.Timestep
        assert(h._graph.edge[a[0]][a[1]]['features'] == [[0.45867514538708193], [1.0 + skipLinkBias*(frame_gap-1)]])
def tracklet_graph():
    #               /  2    4
    #      0  ->  1       /
    #               \  3
    #                     \
    #                       5
    #
    #             6 -> 7 -> 8
    #
    # t:   0      1    2    3

    h = HypothesesGraph()
    h._graph.add_path([(0, 0), (1, 1), (2, 2)])
    h._graph.add_path([(1, 1), (2, 3), (3, 4)])
    h._graph.add_path([(2, 3), (3, 5)])
    h._graph.add_path([(1, 6), (2, 7), (3, 8)])
    for n in h._graph.nodes:
        h._graph.nodes[n]["id"] = n[1]
        h._graph.nodes[n]["traxel"] = Traxel()
        h._graph.nodes[n]["traxel"].Id = n[1]
        h._graph.nodes[n]["traxel"].Timestep = n[0]

    return h
    def _generate_traxelstore(self,
                              time_range,
                              x_range,
                              y_range,
                              z_range,
                              size_range,
                              x_scale=1.0,
                              y_scale=1.0,
                              z_scale=1.0,
                              with_div=False,
                              with_local_centers=False,
                              with_classifier_prior=False):

        logger.info("generating traxels")

        self.progressVisitor.showState("Object features")
        self.progressVisitor.showProgress(0)

        traxelstore = ProbabilityGenerator()

        logger.info("fetching region features and division probabilities")
        feats = self.ObjectFeatures(time_range).wait()

        if with_div:
            if not self.DivisionProbabilities.ready() or len(
                    self.DivisionProbabilities([0]).wait()[0]) == 0:
                msgStr = "\nDivision classifier has not been trained! " + \
                         "Uncheck divisible objects if your objects don't divide or " + \
                         "go back to the Division Detection applet and train it."
                raise DatasetConstraintError("Tracking", msgStr)
            self.progressVisitor.showState("Division probabilities")
            self.progressVisitor.showProgress(0)
            divProbs = self.DivisionProbabilities(time_range).wait()

        if with_local_centers:
            localCenters = self.RegionLocalCenters(time_range).wait()

        if with_classifier_prior:
            if not self.DetectionProbabilities.ready() or len(
                    self.DetectionProbabilities([0]).wait()[0]) == 0:
                msgStr = "\nObject count classifier has not been trained! " + \
                         "Go back to the Object Count Classification applet and train it."
                raise DatasetConstraintError("Tracking", msgStr)
            self.progressVisitor.showState("Detection probabilities")
            self.progressVisitor.showProgress(0)
            detProbs = self.DetectionProbabilities(time_range).wait()

        logger.info("filling traxelstore")

        filtered_labels = {}
        total_count = 0
        empty_frame = False
        numTimeStep = len(list(feats.keys()))
        countT = 0

        stepStr = "Creating traxel store"
        self.progressVisitor.showState(stepStr +
                                       "                              ")

        for t in list(feats.keys()):
            countT += 1
            self.progressVisitor.showProgress(
                old_div(countT, float(numTimeStep)))

            rc = feats[t][default_features_key]['RegionCenter']
            lower = feats[t][default_features_key]['Coord<Minimum>']
            upper = feats[t][default_features_key]['Coord<Maximum>']
            if rc.size:
                rc = rc[1:, ...]
                lower = lower[1:, ...]
                upper = upper[1:, ...]

            ct = feats[t][default_features_key]['Count']
            if ct.size:
                ct = ct[1:, ...]

            logger.debug("at timestep {}, {} traxels found".format(
                t, rc.shape[0]))
            count = 0
            filtered_labels_at = []
            for idx in range(rc.shape[0]):
                traxel = Traxel()

                # for 2d data, set z-coordinate to 0:
                if len(rc[idx]) == 2:
                    x, y = rc[idx]
                    z = 0
                    x_lower, y_lower = lower[idx]
                    x_upper, y_upper = upper[idx]
                    z_lower = 0
                    z_upper = 0
                elif len(rc[idx]) == 3:
                    x, y, z = rc[idx]
                    x_lower, y_lower, z_lower = lower[idx]
                    x_upper, y_upper, z_upper = upper[idx]
                else:
                    raise DatasetConstraintError(
                        "Tracking",
                        "The RegionCenter feature must have dimensionality 2 or 3."
                    )

                size = ct[idx]

                if (x_upper < x_range[0] or x_lower >= x_range[1]
                        or y_upper < y_range[0] or y_lower >= y_range[1]
                        or z_upper < z_range[0] or z_lower >= z_range[1]
                        or size < size_range[0] or size >= size_range[1]):
                    filtered_labels_at.append(int(idx + 1))
                    continue
                else:
                    count += 1

                traxel.Id = int(idx + 1)
                traxel.Timestep = int(t)
                traxel.set_x_scale(x_scale)
                traxel.set_y_scale(y_scale)
                traxel.set_z_scale(z_scale)

                # Expects always 3 coordinates, z=0 for 2d data
                traxel.add_feature_array("com", 3)
                for i, v in enumerate([x, y, z]):
                    traxel.set_feature_value('com', i, float(v))

                traxel.add_feature_array("CoordMinimum", 3)
                for i, v in enumerate(lower[idx]):
                    traxel.set_feature_value("CoordMinimum", i, float(v))
                traxel.add_feature_array("CoordMaximum", 3)
                for i, v in enumerate(upper[idx]):
                    traxel.set_feature_value("CoordMaximum", i, float(v))

                if with_div:
                    traxel.add_feature_array("divProb", 2)
                    # idx+1 because rc and ct start from 1, divProbs starts from 0
                    prob = float(divProbs[t][idx + 1][1])
                    prob = float(prob)
                    if prob < 0.0000001:
                        prob = 0.0000001
                    if prob > 0.99999999:
                        prob = 0.99999999
                    traxel.set_feature_value("divProb", 0, 1.0 - prob)
                    traxel.set_feature_value("divProb", 1, prob)

                if with_classifier_prior:
                    traxel.add_feature_array("detProb",
                                             len(detProbs[t][idx + 1]))
                    for i, v in enumerate(detProbs[t][idx + 1]):
                        val = float(v)
                        if val < 0.0000001:
                            val = 0.0000001
                        if val > 0.99999999:
                            val = 0.99999999
                        traxel.set_feature_value("detProb", i, float(val))

                # FIXME: check whether it is 2d or 3d data!
                if with_local_centers:
                    traxel.add_feature_array("localCentersX",
                                             len(localCenters[t][idx + 1]))
                    traxel.add_feature_array("localCentersY",
                                             len(localCenters[t][idx + 1]))
                    traxel.add_feature_array("localCentersZ",
                                             len(localCenters[t][idx + 1]))

                    for i, v in enumerate(localCenters[t][idx + 1]):
                        traxel.set_feature_value("localCentersX", i,
                                                 float(v[0]))
                        traxel.set_feature_value("localCentersY", i,
                                                 float(v[1]))
                        traxel.set_feature_value("localCentersZ", i,
                                                 float(v[2]))

                traxel.add_feature_array("count", 1)
                traxel.set_feature_value("count", 0, float(size))

                if (x_upper < x_range[0] or x_lower >= x_range[1]
                        or y_upper < y_range[0] or y_lower >= y_range[1]
                        or z_upper < z_range[0] or z_lower >= z_range[1]
                        or size < size_range[0] or size >= size_range[1]):
                    logger.info("Omitting traxel with ID: {} {}".format(
                        traxel.Id, t))
                    print("Omitting traxel with ID: {} {}".format(
                        traxel.Id, t))
                else:
                    logger.debug("Adding traxel with ID: {}  {}".format(
                        traxel.Id, t))
                    traxelstore.TraxelsPerFrame.setdefault(
                        int(t), {})[int(idx + 1)] = traxel

            if len(filtered_labels_at) > 0:
                filtered_labels[str(int(t) -
                                    time_range[0])] = filtered_labels_at

            logger.debug("at timestep {}, {} traxels passed filter".format(
                t, count))

            if count == 0:
                empty_frame = True
                logger.info('Found empty frames for time {}'.format(t))

            total_count += count

        self.parent.parent.trackingApplet.progressSignal(100)
        self.FilteredLabels.setValue(filtered_labels, check_changed=True)

        return traxelstore
Example #12
0
    def _generate_traxelstore(self,
                              time_range,
                              x_range,
                              y_range,
                              z_range,
                              size_range,
                              x_scale=1.0,
                              y_scale=1.0,
                              z_scale=1.0,
                              with_div=False,
                              with_local_centers=False,
                              with_classifier_prior=False):

        logger.info("generating traxels")
        traxelstore = ProbabilityGenerator()
        
        logger.info("fetching region features and division probabilities")
        feats = self.ObjectFeatures(time_range).wait()
        
        if with_div:
            if not self.DivisionProbabilities.ready() or len(self.DivisionProbabilities([0]).wait()[0]) == 0:
                msgStr = "\nDivision classifier has not been trained! " + \
                         "Uncheck divisible objects if your objects don't divide or " + \
                         "go back to the Division Detection applet and train it."
                raise DatasetConstraintError ("Tracking",msgStr)
            divProbs = self.DivisionProbabilities(time_range).wait()

        if with_local_centers:
            localCenters = self.RegionLocalCenters(time_range).wait()

        if with_classifier_prior:
            if not self.DetectionProbabilities.ready() or len(self.DetectionProbabilities([0]).wait()[0]) == 0:
                msgStr = "\nObject count classifier has not been trained! " + \
                         "Go back to the Object Count Classification applet and train it."
                raise DatasetConstraintError ("Tracking",msgStr)
            detProbs = self.DetectionProbabilities(time_range).wait()

        logger.info("filling traxelstore")

        filtered_labels = {}
        total_count = 0
        empty_frame = False

        for t in feats.keys():
            rc = feats[t][default_features_key]['RegionCenter']
            lower = feats[t][default_features_key]['Coord<Minimum>']
            upper = feats[t][default_features_key]['Coord<Maximum>']
            if rc.size:
                rc = rc[1:, ...]
                lower = lower[1:, ...]
                upper = upper[1:, ...]

            ct = feats[t][default_features_key]['Count']
            if ct.size:
                ct = ct[1:, ...]

            logger.debug("at timestep {}, {} traxels found".format(t, rc.shape[0]))
            count = 0
            filtered_labels_at = []
            for idx in range(rc.shape[0]):
                traxel = Traxel()
                
                # for 2d data, set z-coordinate to 0:
                if len(rc[idx]) == 2:
                    x, y = rc[idx]
                    z = 0
                elif len(rc[idx]) == 3:
                    x, y, z = rc[idx]
                else:
                    raise DatasetConstraintError ("Tracking", "The RegionCenter feature must have dimensionality 2 or 3.")
                size = ct[idx]
                if (x < x_range[0] or x >= x_range[1] or
                            y < y_range[0] or y >= y_range[1] or
                            z < z_range[0] or z >= z_range[1] or
                            size < size_range[0] or size >= size_range[1]):
                    filtered_labels_at.append(int(idx + 1))
                    continue
                else:
                    count += 1
                
                traxel.Id = int(idx + 1)
                traxel.Timestep = int(t) 
                traxel.set_x_scale(x_scale)
                traxel.set_y_scale(y_scale)
                traxel.set_z_scale(z_scale)

                # Expects always 3 coordinates, z=0 for 2d data
                traxel.add_feature_array("com", 3)
                for i, v in enumerate([x, y, z]):
                    traxel.set_feature_value('com', i, float(v))

                traxel.add_feature_array("CoordMinimum", 3)
                for i, v in enumerate(lower[idx]):
                    traxel.set_feature_value("CoordMinimum", i, float(v))
                traxel.add_feature_array("CoordMaximum", 3)
                for i, v in enumerate(upper[idx]):
                    traxel.set_feature_value("CoordMaximum", i, float(v))

                if with_div:
                    traxel.add_feature_array("divProb", 2)
                    # idx+1 because rc and ct start from 1, divProbs starts from 0
                    prob = float(divProbs[t][idx + 1][1])
                    prob = float(prob)
                    if prob < 0.0000001:
                        prob = 0.0000001
                    if prob > 0.99999999:
                        prob = 0.99999999
                    traxel.set_feature_value("divProb", 0, 1.0 - prob)
                    traxel.set_feature_value("divProb", 1, prob)

                if with_classifier_prior:
                    traxel.add_feature_array("detProb", len(detProbs[t][idx + 1]))
                    for i, v in enumerate(detProbs[t][idx + 1]):
                        val = float(v)
                        if val < 0.0000001:
                            val = 0.0000001
                        if val > 0.99999999:
                            val = 0.99999999
                        traxel.set_feature_value("detProb", i, float(val))

                # FIXME: check whether it is 2d or 3d data!
                if with_local_centers:                   
                    traxel.add_feature_array("localCentersX", len(localCenters[t][idx + 1]))
                    traxel.add_feature_array("localCentersY", len(localCenters[t][idx + 1]))
                    traxel.add_feature_array("localCentersZ", len(localCenters[t][idx + 1]))
                    
                    for i, v in enumerate(localCenters[t][idx + 1]):                        
                        traxel.set_feature_value("localCentersX", i, float(v[0]))
                        traxel.set_feature_value("localCentersY", i, float(v[1]))
                        traxel.set_feature_value("localCentersZ", i, float(v[2]))
                
                traxel.add_feature_array("count", 1)
                traxel.set_feature_value("count", 0, float(size))

                # Add traxel to traxelstore after checking position, time, and size ranges
                if (x < x_range[0] or x >= x_range[1] or
                            y < y_range[0] or y > y_range[1] or
                            z < z_range[0] or z > z_range[1] or
                            size < size_range[0] or size > size_range[1]):
                    logger.info("Omitting traxel with ID: {}".format(traxel.Id))
                else:
                    traxelstore.TraxelsPerFrame.setdefault(int(t), {})[int(idx + 1)] = traxel

            if len(filtered_labels_at) > 0:
                filtered_labels[str(int(t) - time_range[0])] = filtered_labels_at
                
            logger.debug("at timestep {}, {} traxels passed filter".format(t, count))

            if count == 0:
                empty_frame = True
                logger.info('Found empty frames')

            total_count += count

        self.FilteredLabels.setValue(filtered_labels, check_changed=True)

        return traxelstore