public void CleanUpExpiredMasks(String cameraName)
{
List <ObjectPosition> maskedList = masked_positions;
if (maskedList != null && maskedList.Count > 0)
{
//Global.Log("Searching for object masks to remove on Camera: " + cameraName);
//scan backward through the list and remove by index. Not as easy to read as find by object but the faster for removals
for (int x = maskedList.Count - 1; x >= 0; x--)
{
ObjectPosition maskedObject = maskedList[x];
if (!maskedObject.isVisible && !maskedObject.isStatic)
{
Global.Log("Masked object NOT visible - " + maskedObject.ToString());
maskedObject.counter--;
if (maskedObject.counter <= 0)
{
Global.Log("Removing expired masked object: " + maskedObject.ToString() + " for camera " + cameraName);
maskedList.RemoveAt(x);
}
}
else
{
Global.Log("Masked object VISIBLE - " + maskedObject.ToString());
maskedObject.isVisible = false; //reset flag
}
}
}
}
public bool CreateDynamicMask(ObjectPosition currentObject)
{
bool maskExists = false;
Global.Log("*** Starting new object mask processing ***");
Global.Log("Current object detected: " + currentObject.ToString() + " on camera " + currentObject.cameraName);
currentObject.thresholdPercent = thresholdPercent;
if (last_positions_history.Contains(currentObject))
{
//get index to prevent another search for removal if needed
int indexLoc = last_positions_history.IndexOf(currentObject);
ObjectPosition foundObject = last_positions_history[indexLoc];
Global.Log("Found in last_positions_history: " + foundObject.ToString() + " for camera: " + currentObject.cameraName);
if (foundObject.counter < history_threshold_count)
{
foundObject.counter++;
}
else
{
Global.Log("History Threshold reached. Moving " + foundObject.ToString() + " to masked object list for camera: " + currentObject.cameraName);
last_positions_history.RemoveAt(indexLoc);
foundObject.isVisible = true;
foundObject.counter = mask_counter_default;
masked_positions.Add(foundObject);
}
}
else if (masked_positions.Contains(currentObject))
{
ObjectPosition maskedObject = (ObjectPosition)masked_positions[masked_positions.IndexOf(currentObject)];
if (maskedObject.counter < mask_counter_default)
{
maskedObject.counter++;
}
Global.Log("Found in masked_positions " + maskedObject.ToString() + " for camera " + currentObject.cameraName);
maskedObject.isVisible = true;
maskExists = true;
}
else
{
Global.Log("+ New object found: " + currentObject.ToString() + ". Adding to last_positions_history for camera: " + currentObject.cameraName);
last_positions_history.Add(currentObject);
}
return(maskExists);
}
//remove objects from history if they have not been detected in defined time (history_save_mins) and found counter < history_threshold_count
public void CleanUpExpiredHistory(String cameraName)
{
try
{
List <ObjectPosition> historyList = last_positions_history;
//Global.Log("### History objects summary for camera " + cameraName + " ###");
if (historyList != null && historyList.Count > 0)
{
//scan backward through the list and remove by index. Not as easy to read but the faster for removals
for (int x = historyList.Count - 1; x >= 0; x--)
{
ObjectPosition historyObject = historyList[x];
TimeSpan ts = DateTime.Now - historyObject.createDate;
int minutes = ts.Minutes;
//Global.Log("\t" + historyObject.ToString() + " existed for: " + ts.Minutes + " minutes");
if (minutes >= history_save_mins)
{
Global.Log("Removing expired history: " + historyObject.ToString() + " for camera " + cameraName + " which existed for " + ts.Minutes + " minutes.");
historyList.RemoveAt(x);
}
}
}
else if (historyList == null)
{
Global.Log("Error: historyList is null?");
}
}
catch (Exception ex)
{
Global.Log("Error: " + Global.ExMsg(ex));
}
}