Differences

This shows you the differences between two versions of the page.

--- ece4580:module_surveillance [2017/02/04 18:58] – pvela
+++ ece4580:module_surveillance [2024/08/20 21:38] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+~~NOTOC~~
 ====== Surveillance System with a Static Camera ======
@@ Line 15: / Line 16: @@
   - Target recognition
+===== Learning Modules =====
+----------------------------
 The sequence below introduces one aspect of surveillance systems at a time.  They direct you to Matlab code that sometimes implements multiple steps at a time. It is recommended that you implement each one individually to get a sense for what role it plays in the entire system, rather than just copy/paste the whole system.
-===== Module #1: A Basic Surveillance System  =====
----------------------------------------------------
-__** Week #1: Setup, Data, and Basics**__ \\
-Explore the [[ECE4580:Module_Surveillance:MatalabVideos|datasets available]] and select a couple of videos to use as the starting point for processing, testing, and debugging the surveillance system to be created as part of this learning module.
+Module Set #1: A Basic (Foreground Detection-Based) Surveillance System
+  - [[ECE4580:Module_Surveillance:M1W1|Week #1]]: Setup, Data, and Basics
+  - [[ECE4580:Module_Surveillance:M1W2|Week #2]]: Foreground Object Extraction
+  - [[ECE4580:Module_Surveillance:M1W3|Week #3]]: Optimization-Based Data Association
+  - [[ECE4580:Module_Surveillance:M1W4|Week #4]]: Adding Temporal Dynamics via a Kalman Filter
-Meanwhile, check out this review of three [[http://www.eetimes.com/document.asp?doc_id=1275604|simple background modeling methods]]. You are not advised to use the code provided when implementing the same in future activities.  There are more efficient ways to do the same without resorting to as many for loops, plus the implementation needs to be packaged up for use by the overall system. Plus, the activities below utilize existing Matlab libraries to the extent possible or desirable.
+Module Set #2: Target Modelling and  Re-Identification
+  - [[ECE4580:Module_Surveillance:M2W1|Week #1]]: Differentiating People
+  - [[ECE4580:Module_Surveillance:M2W2|Week #2]]: Testing the Person Model
+  - [[ECE4580:Module_Surveillance:M2W4|Week #3]]: Re-Identification in Action
+  - [[ECE4580:Module_Surveillance:M2W3|Week #4]]: Enhancing Tracking
-On a related note, the sequence below introduces one aspect of surveillance systems at a time.  They direct you to Matlab code that sometimes implements multiple steps at a time. It is recommended that you implement each one individually to get a sense for what role it plays in the entire system, rather than just copy/paste the whole system.
+Module #3: Merging and Splitting
+  - TBD
-__** Week #2: Background Modelling **__ \\
+Module #4: Tracking vs Detection
-Matlab has implementation of the [[https://www.mathworks.com/help/vision/ref/vision.foregrounddetector-class.html|mixtures of Gaussians adaptive background estimation algorithm]].
+  - TBD.
-__** Week #3: Foreground Object Extraction **__ \\
-[[https://www.mathworks.com/help/vision/examples/detecting-cars-using-gaussian-mixture-models.html|Extracting the foreground objects]] is really performing blob extraction from the binary foreground image.
-__** Week #4: Optimization-Based Data Association **__ \\
-Performing detection does provide a means to identify objects of interest versus the prevailing background image. However if we are interested in maintaining the identity of the objects, additional processing and logic is required.  The simplest scheme simply considers the spatio-temporal history of the targets and tries to link the current detected objects to the previously detected objects. This form of data association is known as the //assignment problem.//
-Two algorithms:
-[[https://www.mathworks.com/matlabcentral/fileexchange/20652-hungarian-algorithm-for-linear-assignment-problems--v2-3-|Hungarian or Munkres' algorithm]] and
-[[https://www.mathworks.com/matlabcentral/fileexchange/26836-lapjv-jonker-volgenant-algorithm-for-linear-assignment-problem-v3-0|Jonker-Volgenant Algorithm]].
-The net result should be similar to this Matlab demo on [[http://www.mathworks.com/help/vision/examples/motion-based-multiple-object-tracking.html|multiple object tracking]], which also implements far more than what is described.  You should strip the extras.
-__** Week #5: Adding Temporal Dynamics via a Kalman Filter **__ \\
-We can do a better job handling things like occlusions, as well as improve the data association, by adding in a temporal filter.  A simple, powerful method is to recursively estimate and correct the moving target dynamics through a Kalman filter.  Matlab has a page on how to do so for
-[[https://www.mathworks.com/help/vision/examples/using-kalman-filter-for-object-tracking.html|object tracking]] along with a more general [[https://www.mathworks.com/discovery/kalman-filter.html | intro page]] to additional documentation.
-  * If you are interested in the details of the Kalman filter and their connection to code, this Matlab file exchange [[https://www.mathworks.com/matlabcentral/fileexchange/5377-learning-the-kalman-filter|code tutorial]] may be of assistance.
-===== Module #2: Going Further =====
-__** Week #1: Differentiating People **__
-Gaussian mixture model for targets using [[http://www.mathworks.com/matlabcentral/fileexchange/26184-em-algorithm-for-gaussian-mixture-model|Expectation Maximization algorithm]].
-__** Week #2: Appearance-Based Data Association **__
-Comparing models.
-__** Week #3: Re-Identification **__
-Using comparison to know when same person has re-entered.
-===== Module #3: Merging and Splitting =====
-TBD.
---------------------------
 ===== Additional Information =====
+----------------------------------
 ==== External Videos =====