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    "## chapter content"
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    "* chain coding\n",
    "* polygonal approximation\n",
    "* spectral description (intensity)\n",
    "* 2D shape descriptors (contours)\n",
    "* 2D shape descriptors (region) area, euler, elong,...\n",
    "* moments\n",
    "* texture analysis\n",
    "* Minkowski fractal dimension \n",
    "* fractal analysis: Hurst coeficient\n",
    "* Gabor filter "
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       "<script>$.getScript('../ipython_notebook_toc.js');</script><a href=\"../Index.ipynb\"><< back to table of content</a><br><div id=\"toc\"></div><ol>\n",
       "<li><a href=\"./01-Statistical features.ipynb\">Statistical features</a></li><li><a href=\"./02-Contour features.ipynb\">Contour features</a></li><li><a href=\"./03-Moments.ipynb\">Moments</a></li><li><a href=\"./04-Texture features.ipynb\">Texture features</a></li></ol>\n",
       "<p>Last updated: 18/11/2015 </p><script>code_show=true; \n",
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