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<div class="title">2dLocalEstimators </div> </div>
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<div class="textblock"><p>Compares local estimators on implicit shapes using <a class="el" href="namespaceDGtal.html">DGtal</a> library.</p>
<p><b>Usage:</b> 2dlocalEstimators –output <output> –shape <shapeName> [required parameters] –estimators <binaryWord> –properties <binaryWord></p>
<p>Below are the different available families of estimators:</p><ul>
<li>True estimators</li>
<li>Maximal DSS based estimators</li>
<li>Maximal DCA based estimators</li>
<li>Binomial convolver based estimators</li>
<li>Integral Invariants based estimators</li>
</ul>
<p>The i-th family of estimators is enabled if the i-th character of the binary word is not 0. The default binary word is '10000'. This means that the first family of estimators, ie. true estimators, is enabled, whereas the next ones are disabled. Below are the different available properties:</p><ul>
<li>Tangent</li>
<li>Curvature</li>
</ul>
<p><b>Allowed</b> <b>options</b> <b>are</b> : </p><div class="fragment"><div class="line">-h,--help Print <span class="keyword">this</span> help message and exit</div>
<div class="line">-l,--list List all available shapes</div>
<div class="line">-o,--output TEXT REQUIRED Output</div>
<div class="line">-s,--shape TEXT REQUIRED Shape name</div>
<div class="line">-R,--radius FLOAT Radius of the shape</div>
<div class="line">-K,--kernelradius FLOAT=2.35162e-314 Radius of the convolution kernel (Integral invariants estimators)</div>
<div class="line">--alpha FLOAT=0.333333 Alpha parameter <span class="keywordflow">for</span> Integral Invariant computation</div>
<div class="line">-A,--axis1 FLOAT Half big axis of the shape (ellipse)</div>
<div class="line">-a,--axis2 FLOAT Half small axis of the shape (ellipse)</div>
<div class="line">-r,--smallradius FLOAT=5 Small radius of the shape</div>
<div class="line">-v,--varsmallradius FLOAT=5 Variable small radius of the shape</div>
<div class="line">-k UINT=3 Number of branches or corners the shape (<span class="keywordflow">default</span> 3)</div>
<div class="line">--phi FLOAT=0 Phase of the shape (in radian)</div>
<div class="line">-w,--width FLOAT=10 Width of the shape</div>
<div class="line">-p,--<a class="codeRef" href="https://dgtal-team.github.io/doc-nightly/namespaceDGtal_1_1functions.html#a18b68d329aa1461a0847a18e99247885">power</a> FLOAT=2 Power of the metric</div>
<div class="line">-x,--center_x FLOAT=0 x-coordinate of the shape center</div>
<div class="line">-y,--center_y FLOAT=0 y-coordinate of the shape center</div>
<div class="line">-g,--gridstep FLOAT=1 Gridstep <span class="keywordflow">for</span> the digitization</div>
<div class="line">-n,--noise FLOAT=0 Level of noise to perturb the shape</div>
<div class="line">--properties TEXT=11 the i-th <span class="keyword">property</span> is disabled iff there is a 0 at position i</div>
<div class="line">-e,--estimators TEXT=1000 the i-th estimator is disabled iff there is a 0 at position i</div>
<div class="line">-E,--exportShape TEXT Exports the contour of the <a class="codeRef" href="https://dgtal-team.github.io/doc-nightly/namespaceboost.html#a6ef3be04115b85579ddf40d86e3ed4d5">source</a> shape as a sequence of discrete points (.sdp)</div>
<div class="line">--lambda BOOLEAN=0 Use the shape to get a better approximation of the surface (optional)</div>
<div class="ttc" id="anamespaceDGtal_1_1functions_html_a18b68d329aa1461a0847a18e99247885"><div class="ttname"><a href="https://dgtal-team.github.io/doc-nightly/namespaceDGtal_1_1functions.html#a18b68d329aa1461a0847a18e99247885">DGtal::functions::power</a></div><div class="ttdeci">T power(const T &aVal, const unsigned int exponent)</div></div>
<div class="ttc" id="anamespaceboost_html_a6ef3be04115b85579ddf40d86e3ed4d5"><div class="ttname"><a href="https://dgtal-team.github.io/doc-nightly/namespaceboost.html#a6ef3be04115b85579ddf40d86e3ed4d5">boost::source</a></div><div class="ttdeci">graph_traits< DGtal::DigitalSurface< TDigitalSurfaceContainer > >::vertex_descriptor source(typename graph_traits< DGtal::DigitalSurface< TDigitalSurfaceContainer > >::edge_descriptor edge, const DGtal::DigitalSurface< TDigitalSurfaceContainer > &digSurf)</div></div>
</div><!-- fragment --><p><b>Example:</b> With this tool you can easely compare several estimator with the real value: </p><div class="fragment"><div class="line">$ 2dlocalEstimators --output curvature --shape flower --radius 15 -v 5 --gridstep 1 --estimators 11100 --properties 01</div>
</div><!-- fragment --><p>You can display the result by using gnuplot:</p>
<div class="fragment"><div class="line">$ gnuplot</div>
<div class="line">gnuplot> plot [][-0.4:0.35] <span class="stringliteral">'curvature_True_curvature.dat'</span> w lines title <span class="stringliteral">"true curvature"</span> , <span class="stringliteral">'curvature_MDCA_curvature.dat'</span> w lines title <span class="stringliteral">"Maximal DCA curvature estimator"</span>, <span class="stringliteral">'curvature_MDSSl_curvature.dat'</span> w lines title <span class="stringliteral">"Maximal DSS based estimators"</span></div>
</div><!-- fragment --><p>You should obtain such a graph:</p>
<div class="image">
<img src="res2dLocalEstimators.png" alt=""/>
<div class="caption">
Resulting visualization.</div></div>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="2dLocalEstimators_8cpp_source.html">2dLocalEstimators.cpp</a> </dd></dl>
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