--- a/diapositives/qjpegrest.html Sun Dec 14 20:00:34 2008 +0000
+++ b/diapositives/qjpegrest.html Mon Dec 15 01:06:43 2008 +0000
@@ -45,11 +45,11 @@
<!--<img src="keys.jpg" alt=
"Cover page images (keys)" class="cover" /><br clear="all" /> -->
-
+<br/><br/><br/><br/><br/>
<h1>Restauració d'imatges JPEG</h1>
<p>Autor: <a href="http://vicerveza.homeunix.net/">Lluís Batlle i Rossell</a>,
-<<a href="mailto:viric@vicerveza.homeunix.net">dsr@w3.org</a>><br />
+<<a href="mailto:viric@vicerveza.homeunix.net">viric@vicerveza.homeunix.net</a>><br />
<p>Director: <a href="http://www-ma4.upc.edu/~aroca/">Josep Maria Aroca i Farrerons</a>,
<<a href="mailto:viric@vicerveza.homeunix.net">aroca@ma4.upc.edu</a>><br />
</div>
@@ -58,7 +58,7 @@
<h1>Estructura</h1>
<ul>
<li>Motius
-<li>Pèrdua als JPEG
+<li>Pèrdues als JPEG
<li>Tècniques de recuperació
<li>Implementació
</ul>
@@ -93,13 +93,14 @@
<div class="slide">
<h1>Canvi dels plans de color</h1>
<h2>RGB a YCbCr</h2>
-<p><img src=""/></p>
+<p><img height=200 src="flors-r.png"/> <img height=200 src="flors-g.png"> <img height=200 src="flors-b.png"> <img height=200 src="flors.png"/></p>
+<p><img height=200 src="flors-y.png"/> <img height=200 src="flors-cb.png"> <img height=200 src="flors-cr.png"></p>
</div>
<div class="slide">
<h1>Delmat dels plans de color</h1>
-<h2>1x1:2x2:2x2</h2>
-<p><img src=""/></p>
+<h2>2x2:1x1:1x1 (blavor)</h2>
+<p><img height=380 src="flors-cb.png"/><img height=200 src="flors-cb-211.png"/><img height=380 src="flors-cb-211-rescaled.png"/></p>
</div>
<div class="slide">
@@ -108,11 +109,170 @@
<li>Divisió en blocs de 8x8 independents
<li>Enmirallat als blocs incomplets
<li>Transformació DCT per bloc
+</ul>
+<p><img height=380 src="Dctjpeg-wikipedia.png"/> <img height=380 src="base8x8-2-8x8.png"/></p>
</div>
<div class="slide">
<h1>Transformada DCT per pla [2]</h1>
<h2>Exemple de bloc transformat</h2>
+<font size="-2">
+<table>
+<tr>
+<td>
+<table border=1>
+<tr>
+<td>127
+<td>127
+<td>127
+<td>127
+<td>127
+<td>127
+<td>127
+<td>0
+<tr>
+<td>127
+<td>127
+<td>127
+<td>0
+<td>0
+<td>127
+<td>0
+<td>127
+<tr>
+<td>127
+<td>127
+<td>0
+<td>127
+<td>127
+<td>0
+<td>127
+<td>127
+<tr>
+<td>127
+<td>0
+<td>127
+<td>0
+<td>127
+<td>127
+<td>0
+<td>127
+<tr>
+<td>191
+<td>0
+<td>191
+<td>191
+<td>0
+<td>191
+<td>0
+<td>191
+<tr>
+<td>191
+<td>191
+<td>0
+<td>191
+<td>191
+<td>0
+<td>191
+<td>191
+<tr>
+<td>191
+<td>0
+<td>191
+<td>0
+<td>0
+<td>191
+<td>191
+<td>191
+<tr>
+<td>0
+<td>191
+<td>191
+<td>191
+<td>191
+<td>191
+<td>191
+<td>191
+</table>
+<td>
+<table border=1>
+<tr>
+<td>914.25
+<td>-18.30
+<td>82.36
+<td>-13.49
+<td>39.75
+<td>14.22
+<td>94.96
+<td>-7.02
+<tr>
+<td>-173.46
+<td>128.41
+<td>-12.29
+<td>60.55
+<td>5.73
+<td>-34.41
+<td>-7.00
+<td>-6.30
+<tr>
+<td>82.36
+<td>-22.47
+<td>-58.21
+<td>-2.88
+<td>-168.41
+<td>-14.50
+<td>-84.32
+<td>15.02
+<tr>
+<td>43.19
+<td>60.55
+<td>30.28
+<td>33.45
+<td>35.68
+<td>88.66
+<td>1.19
+<td>-21.81
+<tr>
+<td>39.75
+<td>0.52
+<td>-168.41
+<td>-17.90
+<td>-39.75
+<td>-7.97
+<td>112.78
+<td>-19.59
+<tr>
+<td>-48.80
+<td>-34.41
+<td>26.71
+<td>88.66
+<td>-18.63
+<td>46.05
+<td>6.01
+<td>116.77
+<tr>
+<td>94.96
+<td>5.09
+<td>-84.32
+<td>-4.57
+<td>112.78
+<td>-22.99
+<td>-339.29
+<td>-3.40
+<tr>
+<td>15.02
+<td>-6.30
+<td>8.21
+<td>-21.81
+<td>-11.80
+<td>116.77
+<td>75.79
+<td>-48.91
+</table>
+</table>
+</font>
+
+
</div>
<div class="slide">
@@ -120,7 +280,237 @@
<ul>
<li>Divisió i arrodoniment
</ul>
-<h2>Exemple de bloc quantitzat</h2>
+<h2>Exemple de bloc quantitzat (q=40)</h2>
+<font size="-1">
+<table>
+<tr>
+<td>
+<table border=1>
+<tr>
+<td>914.25
+<td>-18.30
+<td>82.36
+<td>-13.49
+<td>39.75
+<td>14.22
+<td>94.96
+<td>-7.02
+<tr>
+<td>-173.46
+<td>128.41
+<td>-12.29
+<td>60.55
+<td>5.73
+<td>-34.41
+<td>-7.00
+<td>-6.30
+<tr>
+<td>82.36
+<td>-22.47
+<td>-58.21
+<td>-2.88
+<td>-168.41
+<td>-14.50
+<td>-84.32
+<td>15.02
+<tr>
+<td>43.19
+<td>60.55
+<td>30.28
+<td>33.45
+<td>35.68
+<td>88.66
+<td>1.19
+<td>-21.81
+<tr>
+<td>39.75
+<td>0.52
+<td>-168.41
+<td>-17.90
+<td>-39.75
+<td>-7.97
+<td>112.78
+<td>-19.59
+<tr>
+<td>-48.80
+<td>-34.41
+<td>26.71
+<td>88.66
+<td>-18.63
+<td>46.05
+<td>6.01
+<td>116.77
+<tr>
+<td>94.96
+<td>5.09
+<td>-84.32
+<td>-4.57
+<td>112.78
+<td>-22.99
+<td>-339.29
+<td>-3.40
+<tr>
+<td>15.02
+<td>-6.30
+<td>8.21
+<td>-21.81
+<td>-11.80
+<td>116.77
+<td>75.79
+<td>-48.91
+</table>
+<td>
+<table border=1>
+<tr>
+<td>20
+<td>14
+<td>13
+<td>20
+<td>30
+<td>50
+<td>64
+<td>76
+<tr>
+<td>15
+<td>15
+<td>18
+<td>24
+<td>33
+<td>73
+<td>75
+<td>69
+<tr>
+<td>18
+<td>16
+<td>20
+<td>30
+<td>50
+<td>71
+<td>86
+<td>70
+<tr>
+<td>18
+<td>21
+<td>28
+<td>36
+<td>64
+<td>109
+<td>100
+<td>78
+<tr>
+<td>23
+<td>28
+<td>46
+<td>70
+<td>85
+<td>136
+<td>129
+<td>96
+<tr>
+<td>30
+<td>44
+<td>69
+<td>80
+<td>101
+<td>130
+<td>141
+<td>115
+<tr>
+<td>61
+<td>80
+<td>98
+<td>109
+<td>129
+<td>151
+<td>150
+<td>126
+<tr>
+<td>90
+<td>115
+<td>119
+<td>123
+<td>140
+<td>125
+<td>129
+<td>124
+</table>
+<td>
+<table border=1>
+<tr>
+<td>46
+<td>-1
+<td>6
+<td>-1
+<td>1
+<td>0
+<td>1
+<td>0
+<tr>
+<td>-12
+<td>9
+<td>-1
+<td>3
+<td>0
+<td>0
+<td>0
+<td>0
+<tr>
+<td>5
+<td>-1
+<td>-3
+<td>0
+<td>-3
+<td>0
+<td>-1
+<td>0
+<tr>
+<td>2
+<td>3
+<td>1
+<td>1
+<td>1
+<td>1
+<td>0
+<td>0
+<tr>
+<td>2
+<td>0
+<td>-4
+<td>0
+<td>0
+<td>0
+<td>1
+<td>0
+<tr>
+<td>-2
+<td>-1
+<td>0
+<td>1
+<td>0
+<td>0
+<td>0
+<td>1
+<tr>
+<td>2
+<td>0
+<td>-1
+<td>0
+<td>1
+<td>0
+<td>-2
+<td>0
+<tr>
+<td>0
+<td>0
+<td>0
+<td>0
+<td>0
+<td>1
+<td>1
+<td>0
+</table>
+</table>
+</font>
</div>
<div class="slide">
@@ -138,6 +528,7 @@
<h1>Descodificació convencional [1]</h1>
<ul>
<li>Punt mig de l'interval de quantització
+<!-- ****************** Afegir imatge **************** -->
<li>Independència entre blocs
<li>Independència entre plans
<li>Independència del tipus d'imatges