Marr David Vision Sketch
<p>Nov 7, 2009 11:58 AM
 
DAVID MARR 1945 to 1980  British neurosci and pscy  MIT
a founder of Computational Neuroscience.
 
Trinity College Cambridge  biggest college at Cambrdige
 
full prof in 1980and died that year...leukemia.
 
one must understand information processing systems at three distinct, complementary levels of analysis:</p>
<ul>
<li>computational level: <b>what does the system do (eg: what problems does it solve or overcome) </b>and, equally importantly, why does it do these things</li>
<li>algorithmic level: how does the system do what it does, specifically, what representations does it use and what processes does it employ to build and manipulate the representations</li>
<li>implementational level: how is the system physically realized (in the case of biological vision, what neural structures and neuronal activities implement the visual system)</li>
<li></li>
</ul>
<p>PRIMAL SKETCH ...  like a pencil sketch.
 
2.5D sketch ...  textures are acknowledged.  shading and highlights.
 
3D model  continuous 3D map.
 
2.5D  is realted to stereopsis, optic flow and motion parallax.
 
We construct the viewer centered #D view 
 
 </p>