From c7e1ade5a749828e04bc53844eedbb91152c64be Mon Sep 17 00:00:00 2001
From: Wilrik de Loose <wilrik@wilrik.nl>
Date: Thu, 5 Jun 2008 08:43:47 +0000
Subject: chapter 2 update (stukje evaluation)

---
 report/chapter2.tex | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/report/chapter2.tex b/report/chapter2.tex
index 726aa74..cc1d11c 100644
--- a/report/chapter2.tex
+++ b/report/chapter2.tex
@@ -27,9 +27,13 @@ The number of test cases to implement was the first small problem the group had
 
 In order to support a Wiimote in a program like MatchBlox, a number of development libraries are available on the web. The library that was initially used for the application suffered a lot of lag (or latency). It took some time to determine the error and switch to another library.
 
+\subsubsection{IR smoothing}
+
+...
+
 \subsubsection{Depleted batteries}
 
-A second Wiimote is used to track the head using the infrared camera in front of the Wiimote. The user places two infrared LED's which the Wiimote can keep track of. A wireless Wii sensorbar\footnote[1]{The Wiimote senses IR light from the sensor bar. The light emitted from each end of the sensor bar is focused onto the image sensor which sees the light as two bright dots separated by a distance "mi" on the image sensor. The second distance "m" between the two clusters of light emitters in the Sensor Bar is a fixed distance. From these two distances m and mi, the distance between the Wiimote and the sensor bar can be calculated.} was used for this. This has as great advantages that it's wireless (as opposed the the wired variant shipped with the Wii console) and no home made infrared LED's need to be used. \\
+A second Wiimote is used to track the head using the infrared camera in front of the Wiimote. The user places two infrared LED's which the Wiimote can keep track of. A wireless Wii sensorbar\footnote[1]{The Wiimote senses IR light from the sensor bar. The light emitted from each end of the sensor bar is focused onto the image sensor which sees the light as two bright dots separated by a distance "mi" on the image sensor. The second distance "m" between the two clusters of light emitters in the sensor bar is a fixed distance. From these two distances m and mi, the distance between the Wiimote and the sensor bar can be calculated.} was used for this. This has as great advantages that it's wireless (as opposed the the wired variant shipped with the Wii console) and no home made infrared LED's need to be used. \\
 
 A great disadvantage however, is that it need batteries and it's not visible when the batteries are almost depleted. When the batteries are running low, it is harder for the Wiimote to detect the IR dots. With the use of a camera from a mobile phone, the infrared LED's can be seen. This is a good way to check if the sensor bar is still emitting IR light.
 
@@ -37,7 +41,12 @@ A great disadvantage however, is that it need batteries and it's not visible whe
 
 Cross talk is a common problem in all implementations of stereo vision. It occurs when left images reach the right eye and right images reach the left eye. In other words, you see things with an eye you're only supposed to see with the other eye. In the case of red and blue stereo vision it means that the colors are not properly filtered out. \\
 
-There exist a technique that reduces this effect. What it basically does is subtract the leakage from the displayed intensity. This technique was not applied to the MatchBlox application. Instead, a more detailed and moving background is used. This makes the crosstalk less visible.
+There exist a technique that reduces this effect. What it basically does is subtract the leakage from the displayed intensity. This technique was not applied to the MatchBlox application. Instead, a more detailed and moving background is used. This makes the crosstalk less visible and overall very useable.
 
 \subsection{Evaluation}
 
+The conclusions of the MatchBlox project are explained in chapter 4 or this report. This paragraph deals with the evaluation of the project and how it was executed. \\
+
+A lot of new techniques during the implementation were applied; head tracking, stereo vision, a Wiimote as input device, etc. To fit this all into one big project was a bit over the top and therefor unfeasible. The troubles with the infra red LED's and the Wiimote in general consumed a lot of time and energy of the project. \\
+
+Although the project finished the application thus far, it's not useable for an actual experiment. This doesn't mean all was in vein and no conclusion can be drawn from the results of the project. All of this will be explained in the last chapter. 
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