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              <h4 class="text-white">About</h4>
              <p class="text-white">Explore different ways of visualizing 3D data such as Computational Fluid Dynamics (CFD) simulations
                in urban enviroments in your web-browswer. Select a visualization scheme below and interactively explore
                the content using the <a href="https://cesium.com/cesiumjs/">CesiumJS</a> .</p>                
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          <div id="UrbanVisTitle"> urbanVIS</div> 
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          <!-- <h1>A platform for urban CFD</h1> -->
          <img src="imgs/wind-solid.svg" class="windSVG" width="100px" alt="wind">
          <h1>Urban Visualization Platform</h1>
          <p class="lead text-muted"> On this platform an overview of different visualizations for a variety of (3D) data is provided.</p>
          
          <p>The examples shown here were mainly created during the iCity research projects at HFT Stuttgart (University of
            Applied Sciences Stuttgart). 
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            <a href="publications.html" class="btn btn-secondary my-2 myBtn">iCity Publications</a>
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            <div class="col-md-4">
              <div class="card mb-4 shadow-sm extension">
                <h5>Hexgrid 3D Tiles (15m)</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/HexGrid15m.jpg" alt="">
                <div class="card-body">
                  <p class="card-text">Wind pressure at roof top height, shown as a floating 3D Tiles hexgrid (hexagon width 15m). </p>                
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                    <form action="iStoeckHM.html" class="form-signin" method="GET">
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                  <!-- <small class="text-muted">9 mins</small> -->
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              <div class="card mb-4 shadow-sm extension">
                <h5>Hexgrid 3D Tiles (2m)</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/HexGrid2m_PressureMean3DTiles.jpg" alt="">
                <div class="card-body">
                  <p class="card-text">Wind pressure at roof top height, shown as a floating 3D Tiles Hexgrid (hexagon width 2m).</p>                
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                    <form action="iStoeckHexgrid_2m.html" class="form-signin" method="GET">
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                  <!-- <small class="text-muted">9 mins</small> -->
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              <div class="card mb-4 shadow-sm extension">
                <h5>Hexgrid GeoJSON (5m)</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/HexGrid5m_PressureMeanGeoJSON.jpg" alt="">
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                  <p class="card-text">Wind pressure at roof top height, Hexgrid (hexagon width 5m) is clamped to ground and buildings.</p>                
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                <h5>Pressure PointCloud (3D Tiles)</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/PointCloud.jpg" alt="">
                <div class="card-body">
                  <p class="card-text">Wind pressure around a building block visualzied as a point cloud. Color represents different pressure values according to legend.</p>                
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                  <!-- <small class="text-muted">9 mins</small> -->
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                <h5>Streamlines (3D Tiles)</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/StreamLinesCesiumOverview.jpg" alt="">
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                  <p class="card-text">Streamlines showing wind flow over and around a building block and parts of Stoeckach. Wind speed is encoded as color information as of the legend.</p>                
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                  <!-- <small class="text-muted">9 mins</small> -->
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              <div class="card mb-4 shadow-sm extension">
                <h5>Multi-Color/Part Streamlines </h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/StreamlinesMultipart.jpg" alt="">
                <div class="card-body">
                  <p class="card-text">Wind speed around a building block visualzied using Cesium multicolor multi-part lines primitives. Color represents different wind speeds, values according to legend.</p>                
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                <h5>WindowDetection on Buildings</h5>
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                <img class="thumbimg" src="imgs/thumbnails/EssenPC.jpg" alt="">
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                  <p class="card-text">Showing results from automatic window detection from LiDaR point clouds. Results are shown on top of 3D building models and the original point cloud. </p>
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                <h5>Streamlines with particles</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/StreamlinesMultipart_particles.jpg" alt="">
                <div class="card-body">
                  <p class="card-text">Multipart streamlines with vertex coloring showing also particles moving along the streamslines in order to give a better impression of the wind field. </p>
                  <!-- <small class="text-muted">9 mins</small> -->
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                    <form action="StreamlineParticles.html" class="form-signin" method="GET">
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              <div class="card mb-4 shadow-sm extension">
                <h5>Wind in Stuttgart, Kernerviertel</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/Kirchturm.JPG" alt="">
                <div class="card-body">
                  <p class="card-text">Visualisation of wind around three target buildings (red) near a church with spire and surrounded by numerous building layers (colors). The streamlines results from a Computational Fluid Dynamic simulation of the air flow with RANS (Reynold-Averaged Navier Stokes Equations) and the k-omega SST Turbulence model.</p>
                  <!-- <small class="text-muted">9 mins</small> -->
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                  <div class="btn-group">
                    <form action="circularData.html" class="form-signin" method="GET">
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      <!-- zeile 4 mit gallery -->

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                <h5>Wind in Stuttgart, Kernerviertel (Partikel)</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/Kirchturm1.JPG" alt="">
                <div class="card-body">
                  <p class="card-text">Wind visualisation with particles around three target buildings (red) near a church with spire and surrounded by numerous building layers (colors). The streamlines results from a Computational Fluid Dynamic simulation of the air flow with RANS (Reynold-Averaged Navier Stokes Equations) and the k-omega SST Turbulence model.</p>
                  <!-- <small class="text-muted">9 mins</small> -->
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              <div class="card mb-4 shadow-sm extension">
                <h5>Wind in Stuttgart, Kernerviertel (Partikel)</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/Kirchturm2.JPG" alt="">
                <div class="card-body">
                  <p class="card-text">Wind visualisation with particles around three target buildings (red) near a church with spire and surrounded by numerous building layers (colors). The streamlines results from a Computational Fluid Dynamic simulation of the air flow with RANS (Reynold-Averaged Navier Stokes Equations) and the k-omega SST Turbulence model.</p>
                  <!-- <small class="text-muted">9 mins</small> -->
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                  <div class="btn-group">
                    <form action="Kirchturm2.html" class="form-signin" method="GET">
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                <h5>Under construction</h5>
                <!-- <svg class="bd-placeholder-img card-img-top" width="100%" height="225" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Thumbnail"><title>Placeholder</title><rect width="100%" height="100%" fill="#55595c"/><text x="50%" y="50%" fill="#eceeef" dy=".3em">Thumbnail</text></svg> -->
                <img class="thumbimg" src="imgs/thumbnails/StreamlinesMultipart.jpg" alt="">
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                  <p class="card-text">Under construction</p>
                  <!-- <small class="text-muted">9 mins</small> -->
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