{
 "metadata": {
  "name": "skimage_morphology"
 },
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   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": "Morphological Techniques using NumPy and Scikit-image"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "\"scikit-image(http://scikit-image.org/) is a collection of algorithms for image processing. It is available free of charge and free of restriction. We pride ourselves on high-quality, peer-reviewed code, written by an active community of volunteers.\"\n\nThis document is aimed to serve as a supplement the already existing documentation. It is aimed at people new to open software development and more specifically, to IP using scikit-image and numpy. This document explains the various basic functions found in scikit-image library using Morphological techniques and illustrates each by showing the results on an image followed by some comments to provide an intuitive understanding of the techniques.\n\nYou can check out the documentaion for individual modules using the help feature in python or '?' in ipython or directly browse through the files to see module specific information. \n\nAdditional Resources :\n\n1. http://scikit-image.org/docs/dev/ is the official site for documentation regarding the latest version. And of course google always to the rescue. \n2. http://www.mathworks.in/help/images/morphology-fundamentals-dilation-and-erosion.html#f18-14379 - provides a nice understanding of the most basic operations involved in morphological processing, i.e. erosion and dilation.\n\nThis tutorial was developed using iPython Notebook. For best viewing experience install iPython, download the .ipynb file and view it as a notebook."
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "Importing the necessary modules"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# We will be looking at the following techniques to begin with\nfrom skimage.morphology import erosion, dilation, opening, closing, white_tophat, black_tophat, skeletonize, convex_hull, convex_hull_image\n\n# Importing 'square' and 'disk' modules for creating BINARY structuring elements\nfrom skimage.morphology import square as sq\nfrom skimage.morphology import disk\n\n# Skimage supports NumPy data types and takes in images as type 'ndarray'. matplotlib.pyplot is a python library for providing MATLAB-like functionality, hence the same function names. E.g: imshow\nimport matplotlib.pyplot as plt\nimport numpy as np\n\n# Importing the '_io' module for reading, writing and showing images. Note thatin skimage, all files having the same name as the folder have been renamed with an '_'. Hence '_io'\nimport skimage.io._io as io\nfrom skimage.data import load\nfrom skimage.util import img_as_ubyte",
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 89
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "Importing images"
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "There are essentially 2 ways for importing images for use with skimage. They are as follows :\n\n1. Using the plt.imread() to read the images as a *numpy.ndarray* data type\n2. Using the skimage modules like 'imread', 'imshow' etc provided under the '/skimage/io/_io.py'\n\nNote that plt.imread() will read the image, a grey-scale image as a 3D array, whereas with io.imread() there is a parameter 'as_grey=True' for reading it as a 2D array and using 'img_as_ubyte()', can be converted to type : *numpy.ndarray* with *uint8* element. This is the input array for the morphological functions.\n\nThe following checks should be made for running the morphological functions :\n\nImage :\n\n1. Type : numpy.ndarray\n2. Data type : uint8\n3. 2D\n\nStructuring Element :\n\n1. Type : Binary or boolean"
    },
    {
     "cell_type": "heading",
     "level": 3,
     "metadata": {},
     "source": "1. Importing & displaying using plt.imread() and plt.imshow()"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "i_f = plt.imread('/Users/chintak/Repositories/scikit-image/skimage/data/bw_text.png')\n# Type : numpy.ndarray, dtype : float32, dimensions : 3\n#type(i_f)\n#i_f\n#ndim(i_f)\n# Slicing\ni_f2 = i_f[:,:,0]\n# To convert to uint8 data type\ni = img_as_ubyte(i_f2)\n\n# To display this image\nplt.imshow(i, cmap=plt.cm.gray)  # For showing gray-scale images\n#ndim(i)\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "skimage.dtype_converter: WARNING: Possible precision loss when converting from float32 to uint8\n"
      },
      {
       "output_type": "display_data",
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tWly+bt26yJEjh6h+APjyyy+xceNGuLq64tNPP+XpsbGxOHr0qNXXT8pff/2FNWvWoG3b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\nqamp5Ovra3SOyOenWntqqJ0PRMrxZPPTsL2azFdrRMt3mhXGdtSoUZg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      }
     ],
     "prompt_number": 90
    },
    {
     "cell_type": "heading",
     "level": 3,
     "metadata": {},
     "source": "2. Importing & displaying using io.imread() and io.imshow()"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "phantom = img_as_ubyte(io.imread('/Users/chintak/Repositories/scikit-image/skimage/data/phantom.png', as_grey=True))\n# 'as_grey=True' ensures that the image is taken as a 2D rather than a 3D array with equal R,G,B values for a point\nio.imshow(phantom)\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": "skimage.dtype_converter: WARNING: Possible precision loss when converting from float64 to uint8\n"
      },
      {
       "output_type": "display_data",
       "png": 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      }
     ],
     "prompt_number": 91
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "EROSION"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "Usage : erosion(image, selem, out=None, shift_x=False, shift_y=False)\n\nReturn greyscale morphological erosion of an image.\n\nMorphological erosion sets a pixel at (i,j) to the **minimum over all pixels\nin the neighborhood centered at (i,j)**. Erosion shrinks bright regions and\nenlarges dark regions.\n\nParameters\n----------\nimage : ndarray\n    Image array.\nselem : ndarray\n    The neighborhood expressed as a 2-D array of 1's and 0's.\nout : ndarray\n    The array to store the result of the morphology. If None is\n    passed, a new array will be allocated.\nshift_x, shift_y : bool\n    shift structuring element about center point. This only affects\n    eccentric structuring elements (i.e. selem with even numbered sides).\n\nReturns\n-------\neroded : uint8 array\n    The result of the morphological erosion.\n"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# We will be working with phantom.png for this function.\n# First defining the structuring element as a disk using disk()\n#selem = disk(3);\nselem = disk(6);\n#selem = disk(10);\neroded = erosion(phantom, selem)\n\n# Displaying the original and eroded image \n# 'plt.figure() can be used for showing multiple images together\nplt.figure(1) \nio.imshow(phantom)\nplt.figure(2)\nio.imshow(eroded)\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "display_data",
       "png": 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       "output_type": "display_data",
       "png": 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      }
     ],
     "prompt_number": 92
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "**Comments** : \n\nSee how the white boundary of the image disappers or gets eroded as we increse the size of the disk. \nAlso notice the increase in size of the two black ellipses in the center and the disappearance of the 3-4 light grey patches in the lower part of the image."
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "DILATION"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "Documentation :\n\nDefinition: dilation(image, selem, out=None, shift_x=False, shift_y=False)\nDocstring:\nReturn greyscale morphological dilation of an image.\n\nMorphological dilation sets a pixel at (i,j) to the **maximum over all pixels\nin the neighborhood centered at (i,j)**. Dilation enlarges bright regions\nand shrinks dark regions.\n\nParameters\n----------\n\nimage : ndarray\n    Image array.\nselem : ndarray\n    The neighborhood expressed as a 2-D array of 1's and 0's.\nout : ndarray\n    The array to store the result of the morphology. If None, is\n    passed, a new array will be allocated.\nshift_x, shift_y : bool\n    shift structuring element about center point. This only affects\n    eccentric structuring elements (i.e. selem with even numbered sides).\n\nReturns\n-------\ndilated : uint8 array\n    The result of the morphological dilation.\n"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# We will be working with phantom.png to show difference between erosion and dilation.\n# First defining the structuring element as a disk using disk()\n#selem = disk(3);\nselem = disk(6);\n#selem = disk(10);\ndilate = dilation(phantom, selem)\n\n# Displaying the original and eroded image \n# 'plt.figure() can be used for showing multiple images together\nplt.figure(1) \nio.imshow(phantom)\nplt.figure(2)\nio.imshow(dilate)\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "display_data",
       "png": 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       "output_type": "display_data",
       "png": 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      }
     ],
     "prompt_number": 93
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "**Comments** : \n\nSee how the white boundary of the image thickens or gets dialted as we increse the size of the disk. \nAlso notice the decrease in size of the two black ellipses in the centre, with the thickening of the light grey circle in the center and the 3-4 patches in the lower part of the image."
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "OPENING"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "Documentation :\n\nDefinition: opening(image, selem, out=None)\nDocstring:\nReturn greyscale morphological opening of an image.\n\nThe morphological opening on an image is defined as an **erosion followed by\na dilation**. Opening can remove small bright spots (i.e. \"salt\") and connect\nsmall dark cracks. This tends to \"open\" up (dark) gaps between (bright)\nfeatures.\n\nParameters\n----------\nimage : ndarray\n    Image array.\nselem : ndarray\n    The neighborhood expressed as a 2-D array of 1's and 0's.\nout : ndarray\n    The array to store the result of the morphology. If None\n    is passed, a new array will be allocated.\n\nReturns\n-------\nopening : uint8 array\n    The result of the morphological opening.\n"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# We will be working with phantom.png for this function.\n# First defining the structuring element as a disk using disk()\n#selem = disk(3);\nselem = disk(6);\n#selem = disk(10);\nopened = opening(phantom, selem)\n\n# Displaying the original and eroded image \n# 'plt.figure() can be used for showing multiple images together\nplt.figure(1) \nio.imshow(phantom)\nplt.figure(2)\nio.imshow(opened)\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "display_data",
       "png": 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       "output_type": "display_data",
       "png": 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      }
     ],
     "prompt_number": 94
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "**Comments** : \n\nSince 'opening' an image is equivalent to *erosion followed by dilation*, white or lighter portions in the image which are smaller than the structuring element tend to be removed, just as in erosion along with the increase in thickness of black portions and thinning of larger (than structing elements) white portions. But dilation reverses this effect and hence as we can see in the image, the central 2 dark ellipses and the circular lighter portion retain their thickness but the lighter patchs in the bottom get completely eroded."
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "CLOSING"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "Documentation :\n\nDefinition: closing(image, selem, out=None)\nDocstring:\nReturn greyscale morphological closing of an image.\n\nThe morphological closing on an image is defined as a **dilation followed by\nan erosion**. Closing can remove small dark spots (i.e. \"pepper\") and connect\nsmall bright cracks. This tends to \"close\" up (dark) gaps between (bright)\nfeatures.\n\nParameters\n----------\nimage : ndarray\n    Image array.\nselem : ndarray\n    The neighborhood expressed as a 2-D array of 1's and 0's.\nout : ndarray\n    The array to store the result of the morphology. If None,\n    is passed, a new array will be allocated.\n\nReturns\n-------\nclosing : uint8 array\n    The result of the morphological closing."
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# We will be working with phantom.png for this function.\n# First defining the structuring element as a disk using disk()\n#selem = disk(3);\nselem = disk(6);\n#selem = disk(10);\nphantom1 = phantom\nphantom[300:310, 200:210] = 0\nclosed = closing(phantom1, selem)\n\n# Displaying the original and eroded image \n# 'plt.figure() can be used for showing multiple images together\nplt.figure(1) \nio.imshow(phantom1)\nplt.figure(2)\nio.imshow(closed)\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "display_data",
       "png": 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       "output_type": "display_data",
       "png": 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      }
     ],
     "prompt_number": 95
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "**Comments** : \n\nSince 'closing' an image is equivalent to *dilation followed by erosion*, the small black 10X10 pixel wide square introduced has been removed and the -34 white ellipses at the bottom get connected, just as is expected after dilation along with the thinning of larger (than structing elements) black portions. But erosion reverses this effect and hence as we can see in the image, the central 2 dark ellipses and the circular lighter portion retain their thickness but the all black square is completely removed. But note that the white patches at the bottom remain connected even after erosion."
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "WHITE TOPHAT"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "Documentation :\n\nDefinition: white_tophat(image, selem, out=None)\nDocstring:\nReturn white top hat of an image.\n\nThe white top hat of an image is defined as the **image minus its\nmorphological opening**. This operation returns the bright spots of the image\nthat are smaller than the structuring element.\n\nParameters\n----------\nimage : ndarray\n    Image array.\nselem : ndarray\n    The neighborhood expressed as a 2-D array of 1's and 0's.\nout : ndarray\n    The array to store the result of the morphology. If None\n    is passed, a new array will be allocated.\n\nReturns\n-------\nopening : uint8 array\n    The result of the morphological white top hat.\n"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# We will be working with phantom.png for this function.\n# First defining the structuring element as a disk using disk()\n#selem = disk(3);\nselem = disk(5);\n#selem = disk(10);\nphantom[150:160, 200:210] = 255\nw_tophat = white_tophat(phantom, selem)\n\n# Displaying the original and eroded image \n# 'plt.figure() can be used for showing multiple images together\nplt.figure(1) \nio.imshow(phantom)\nplt.figure(2)\nio.imshow(w_tophat)\n#plt.figure(3)\n#io.imshow(opening(phantom, selem))\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "display_data",
       "png": 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       "output_type": "display_data",
       "png": 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      }
     ],
     "prompt_number": 96
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "**Comments** : \n\nThis technique is used to locate the bright spots in an image which are smaller than the size of the structuring element. As can be seen, the 10X10 pixel wide white square and a part of the white boundary are highlighted since they are smaller in size as compared to the disk which is of radius 5, i.e. 10 pixels wide. If the radius is decreased to 4, we can see that a center of the square is removed and only the corners are visible, since diagonals are longer than sides."
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "BLACK TOPHAT"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "Documentation :\n\nDefinition: black_tophat(image, selem, out=None)\nDocstring:\nReturn black top hat of an image.\n\nThe black top hat of an image is defined as its morphological **closing minus\nthe original image**. This operation returns the *dark spots of the image that\nare smaller than the structuring element*. Note that dark spots in the\noriginal image are bright spots after the black top hat.\n\nParameters\n----------\nimage : ndarray\n    Image array.\nselem : ndarray\n    The neighborhood expressed as a 2-D array of 1's and 0's.\nout : ndarray\n    The array to store the result of the morphology. If None\n    is passed, a new array will be allocated.\n\nReturns\n-------\nopening : uint8 array\n   The result of the black top filter."
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# We will be working with phantom.png for this function.\n# First defining the structuring element as a disk using disk()\n#selem = disk(3);\nselem = disk(5);\n#selem = disk(10);\nphantom[150:160, 200:210] = 255\nb_tophat = black_tophat(phantom, selem)\n\n# Displaying the original and eroded image \n# 'plt.figure() can be used for showing multiple images together\nplt.figure(1) \nio.imshow(phantom)\nplt.figure(2)\nio.imshow(b_tophat)\n#plt.figure(3)\n#io.imshow(opening(phantom, selem))\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "display_data",
       "png": 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       "output_type": "display_data",
       "png": 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      }
     ],
     "prompt_number": 97
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "**Comments** : \n\nThis technique is used to locate the dark spots in an image which are smaller than the size of the structuring element. As can be seen, the 10X10 pixel wide black square is highlighted since it is smaller or equal in size as compared to the disk which is of radius 5, i.e. 10 pixels wide. If the radius is decreased to 4, we can see that a center of the square is removed and only the corners are visible, since diagonals are longer than sides."
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "Duality\n-------\n\n1. Erosion <-> Dilation\n2. Opening <-> Closing\n3. White Tophat <-> Black Tophat"
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "SKELETONIZE"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "Documentation :\n\nDefinition: skeletonize(image)\nDocstring:\nReturn the skeleton of a **binary image**.\n\nThinning is used to reduce each connected component in a binary image\nto a **single-pixel wide skeleton**.\n\nParameters\n----------\nimage : numpy.ndarray\n    A binary image containing the objects to be skeletonized. '1'\n    represents foreground, and '0' represents background. It\n    also accepts arrays of boolean values where True is foreground.\n\nReturns\n-------\nskeleton : ndarray\n    A matrix containing the thinned image.\n\nSee also\n--------\nmedial_axis\n\nNotes\n-----\nThe algorithm [1] works by making successive passes of the image,\nremoving pixels on object borders. This continues until no\nmore pixels can be removed.  The image is correlated with a\nmask that assigns each pixel a number in the range [0...255]\ncorresponding to each possible pattern of its 8 neighbouring\npixels. A look up table is then used to assign the pixels a\nvalue of 0, 1, 2 or 3, which are selectively removed during\nthe iterations.\n\nNote that this algorithm will give different results than a\nmedial axis transform, which is also often referred to as\n\"skeletonization\".\n\nReferences\n----------\n.. [1] A fast parallel algorithm for thinning digital patterns,\n   T. Y. ZHANG and C. Y. SUEN, Communications of the ACM,\n   March 1984, Volume 27, Number 3"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# For this we will use ip_text.gif\ntext = img_as_ubyte(io.imread('/Users/chintak/Repositories/scikit-image/skimage/data/ip_text.gif', as_grey=True)).astype(bool)\nskeleton = skeletonize(text)\n\n# Displaying the original image and the skeletonized image\nplt.figure(1)\nio.imshow(text)\nplt.figure(2)\nio.imshow(skeleton)\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "display_data",
       "png": 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      },
      {
       "output_type": "display_data",
       "png": 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      }
     ],
     "prompt_number": 98
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "**Comments** : \n\nAs the name suggests, this technique is used to thin the image to 1-pixel wide skeleton by applying thinning successively."
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": "CONVEX HULL"
    },
    {
     "cell_type": "raw",
     "metadata": {},
     "source": "Documentation :\n\nDefinition: convex_hull_image(image)\nDocstring:\nCompute the convex hull image of a **binary image**.\n\nThe convex hull is the **set of pixels included in the smallest convex\npolygon that surround all white pixels in the input image**.\n\nParameters\n----------\nimage : ndarray\n    Binary input image.  This array is cast to bool before processing.\n\nReturns\n-------\nhull : ndarray of uint8\n    Binary image with pixels in convex hull set to 255.\n\nReferences\n----------\n.. [1] http://blogs.mathworks.com/steve/2011/10/04/binary-image-convex-hull-algorithm-notes/"
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": "# For this we will use chicken.png\nrooster = img_as_ubyte(io.imread('/Users/chintak/Repositories/scikit-image/skimage/data/rooster.png', as_grey=True)).astype(bool)\nhull1 = convex_hull_image(rooster)\nrooster1 = np.copy(rooster)\nrooster1[350:355, 90:95] = 1\nhull2 = convex_hull_image(rooster1)\n\n# Displaying the original image and the skeletonized image\nplt.figure(1)\nio.imshow(rooster)\nplt.figure(2)\nio.imshow(rooster1)\nplt.figure(3)\nio.imshow(hull1)\nplt.figure(4)\nio.imshow(hull2)\nplt.show()",
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "display_data",
       "png": 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5e/duWozr008/Nfv37zd79+41xjh/HfT5fObx48ezrnPCmBIWzevXr5vdu3dH/93Y2Gga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\n"
      }
     ],
     "prompt_number": 99
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": "**Comments** : \n\nAs the figure illustrates, convex_hull_image() gives the smallestpolygon which covers the white or True completely in the image."
    }
   ],
   "metadata": {}
  }
 ]
}