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klt, a tracking algorithm

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<h2> KLTStore...() / KLTExtract...() </h2> 

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<h2> 
<code>
void KLTStoreFeatureList(<br>
     KLT_FeatureList fl,<br>
     KLT_FeatureTable ft,<br>
     int frame);<br><br>
void KLTStoreFeatureHistory(<br>
     KLT_FeatureHistory fh,<br>
     KLT_FeatureTable ft,<br>
     int feat);<br>
</code>
</h2>

KLTStoreFeatureList() stores <code>fl</code> in the <code>frame</code> 
column of <code>ft</code>.  The number <code>frame</code> must be between 0 and
<code>ft->nFrames - 1</code>.  The <code>nFeatures</code> field of both
<code>fl</code> and <code>ft</code>
must be the same.<p>

KLTStoreFeatureHistory() is similar, except that 
<code>fh</code> is stored in the <code>feat</code> 
row of <code>ft</code>.<p>

<hr>

<h2> 
<code>
void KLTExtractFeatureList(<br>
     KLT_FeatureList fl,<br>
     KLT_FeatureTable ft,<br>
     int frame);<br><br>
void KLTExtractFeatureHistory(<br>
     KLT_FeatureHistory fh,<br>
     KLT_FeatureTable ft,<br>
     int feat);<br>
</code>
</h2>

KLTExtractFeatureList() sets <code>fl</code> to the 
<code>frame</code> column
of <code>ft</code>, while
KLTExtractFeatureHistory() sets <code>fh</code> to the 
<code>feat</code> row 
of <code>ft</code>.  The same restrictions apply as those of the
KLTStore...() functions.<p>

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