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<article role="main">
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<section id="generating-fingerprint-models">
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<h1>Generating fingerprint models<a class="headerlink" href="#generating-fingerprint-models" title="Permalink to this heading">#</a></h1>
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<section id="generating-curved-fingerprint-model">
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<h2>Generating curved fingerprint model<a class="headerlink" href="#generating-curved-fingerprint-model" title="Permalink to this heading">#</a></h2>
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<p>It is possible to generate stl model using the <cite>–stl</cite> switch. This requires more parameters, first of which is the type of generated fingerprint.</p>
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<p>If the mode is set to <cite>c</cite>, the output model will be a curved finger model, with optional parameters following the filename controlling its shape.</p>
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<p>First optional parameter is papilar line height <cite>height_line</cite>, second is thickness of the model <cite>height_base</cite>,
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third the rate of curvature along x axis <cite>curv_rate_x</cite> and the third is the rate of curvature along y axis <cite>curv_rate_y</cite>.</p>
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<ul class="simple">
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<li><p>General form for curved stl generation:</p></li>
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</ul>
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<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>python3<span class="w"> </span>src/main.py<span class="w"> </span>input_file<span class="w"> </span>output_file<span class="w"> </span>dpi<span class="w"> </span>--config<span class="w"> </span>config_file<span class="w"> </span>preset<span class="w"> </span>--stl<span class="w"> </span>c<span class="w"> </span>height_line<span class="w"> </span>height_base<span class="w"> </span>curvature_x<span class="w"> </span>curvature_y
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</pre></div>
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</div>
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<ul class="simple">
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<li><p>Working example curved stl generation:</p></li>
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</ul>
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<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>python3<span class="w"> </span>src/main.py<span class="w"> </span>res/examples/Palec_P4.tif<span class="w"> </span>res/examples/Palec_P4_from_preset.png<span class="w"> </span><span class="m">600</span><span class="w"> </span>--config<span class="w"> </span>conf/conf.json<span class="w"> </span>new_ridge<span class="w"> </span>--stl<span class="w"> </span>c<span class="w"> </span><span class="m">2</span><span class="w"> </span><span class="m">10</span><span class="w"> </span><span class="m">2</span><span class="w"> </span><span class="m">2</span>
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</pre></div>
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</div>
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</section>
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<section id="generating-planar-finger-model">
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<h2>Generating planar finger model<a class="headerlink" href="#generating-planar-finger-model" title="Permalink to this heading">#</a></h2>
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<p>Using <cite>p</cite> mode makes the generated fingerprint model flat.
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Optional parameters are height of the papilar lines and base thickness.</p>
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<ul class="simple">
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<li><p>General command form for planar stl generation:</p></li>
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</ul>
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<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>python3<span class="w"> </span>src/main.py<span class="w"> </span>input_file<span class="w"> </span>output_file<span class="w"> </span>dpi<span class="w"> </span>--config<span class="w"> </span>config_file<span class="w"> </span>preset<span class="w"> </span>--stl<span class="w"> </span>p<span class="w"> </span>height_line<span class="w"> </span>height_base
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</pre></div>
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</div>
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<ul class="simple">
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<li><p>Working example of planar stl generation:</p></li>
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</ul>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>$ python3 src/main.py res/examples/Palec_P4.tif res/examples/Palec_P4_from_preset.png 600 --config conf/conf.json new_ridge --stl p 2 10
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</pre></div>
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</div>
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</section>
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<section id="mapping-fingerprint-to-existing-finger-model">
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<h2>Mapping fingerprint to existing finger model<a class="headerlink" href="#mapping-fingerprint-to-existing-finger-model" title="Permalink to this heading">#</a></h2>
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<p>Using <cite>m</cite> mode modifies the preexisting finger model to contain fingerprint.
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First optional parameter is papilar line height <cite>height_line</cite>, second is the number of iterations <cite>iter</cite> to make the finger mesh denser. Higher number of itertions results in denser finger mesh and better result.
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The next three parameters are axis offsets for the finger, <cite>finger_x</cite>, <cite>finger_y</cite>, <cite>finger_z</cite>.
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These control the location of the finger. They need to be set only if the user wants to move core of the print closer to the center of the finger model. The last parameter <cite>finger_model</cite> allows the user to choose custom finger model.</p>
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<ul class="simple">
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<li><p>General command form for mapped stl generation</p></li>
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</ul>
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<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>python3<span class="w"> </span>src/main.py<span class="w"> </span>input_file<span class="w"> </span>output_file<span class="w"> </span>dpi<span class="w"> </span>--config<span class="w"> </span>config_file<span class="w"> </span>preset<span class="w"> </span>--stl<span class="w"> </span>m<span class="w"> </span>height_line<span class="w"> </span>iter<span class="w"> </span>finger_x<span class="w"> </span>finger_y<span class="w"> </span>finger_z<span class="w"> </span>finger_model
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</pre></div>
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</div>
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<ul class="simple">
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<li><p>Working example of finger mapping</p></li>
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</ul>
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<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>python3<span class="w"> </span>src/main.py<span class="w"> </span>res/examples/Palec_P4.tif<span class="w"> </span>res/examples/Palec_P4.png<span class="w"> </span><span class="m">600</span><span class="w"> </span>--config<span class="w"> </span>conf/conf.json<span class="w"> </span>new_ridge<span class="w"> </span>--stl<span class="w"> </span>m<span class="w"> </span><span class="m">0</span>.2<span class="w"> </span><span class="m">2</span><span class="w"> </span><span class="m">0</span><span class="w"> </span><span class="m">0</span><span class="w"> </span><span class="m">0</span><span class="w"> </span>res/finger_backup/finger.stl
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</pre></div>
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</div>
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</section>
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