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Author: golvok

README.md

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+ECE241-Final_Project
+====================
+Authors: **Matthew Walker** and **Linda Shen**
+
+Almost all of the commits may be golvok(Matthew Walker)'s, but we pair-programmed essentially the whole thing.
+
+This is our final project for Digital Systems (ECE241). Here follows some random excerpts from the report, and scroll down for some video.
+
+###Intro
+
+The goal of this project was to detect
+and track motion in real time. Images
+were extracted from a video camera and
+analyzed to determine movement
+between each frame and the centre of
+motion was tracked. The results were
+filtered and displayed. 
+
+The project was done on an Altera DE2 board. (Cyclone II)
+
+Explanations
+------------
+###Block Diagram 
+
+![Block diagram](./doc/block_diagram.png?raw=true)
+
+###Smoothing
+
+To smooth the binary image, the 8 pixels surrounding the current pixel, as well as it’s value, are considered. If all 9 are high, we display the center one as high. To minimize the number of clock cycles needed, the pixels are loaded into 3 shift registers, one for the row above, below, and current. They are then shifted as it moves across the image. 
+
+###Centroid Calcultation
+The centroid is computed by dividing the x and y totals by the difference count. This must be done at a slower clock speed, as the dividend and divisor are large and variable.
+
+###Motion Tracking/History
+The centroid is stored in a shift register that keeps the centroid location of 20 frames. This history is drawn to show the path of motion, in the lower right corner of the screen.
+
+###"Random" 3 Cycle Delays
+There is a 3 clock cycle delay between the setting of the read address and the value being ready from the RAMs. We buffer pixel locations in several places to accommodate this delay.
+
+Video Links
+-----------
+###Short Demo
+
+<a href="http://www.youtube.com/watch?feature=player_embedded&v=7-euBfdgQd0
+" target="_blank"><img src="http://img.youtube.com/vi/7-euBfdgQd0/0.jpg" 
+alt="long demo" width="240" height="180" border="10" /></a>
+
+###Long Demo
+
+<a href="http://www.youtube.com/watch?feature=player_embedded&v=DNowxkbowgg
+" target="_blank"><img src="http://img.youtube.com/vi/DNowxkbowgg/0.jpg" 
+alt="short demo" width="240" height="180" border="10" /></a>