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              "value": "Andres method presents the advantage that concentric circles create a disc whereas Bresenham can make holes. There is also less distortions when Andres circles are rotated. Bresenham method is also known as midpoint circle algorithm. Anti-aliased circle generator is available with "
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              "value": "circle_perimeter_aa",
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              "name": "rr, cc",
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                      "value": "Bresenham and Andres' method: Indices of pixels that belong to the circle perimeter. May be used to directly index into an array, e.g. "
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                      "value": "img[rr, cc] = 1"
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              "value": "Generate circle perimeter coordinates."
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                      "value": "Centre coordinate of circle."
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              "name": "radius",
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                      "value": "Radius of circle."
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              "name": "method",
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                      "value": "bresenhamBresenham method (default) andres : Andres method"
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                      "value": "Image shape which is used to determine the maximum extent of output pixel coordinates. This is useful for circles that exceed the image size. If None, the full extent of the circle is used.  Must be at least length 2. Only the first two values are used to determine the extent of the input image."
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        "value": "from skimage.draw import circle_perimeter\nimg = np.zeros((10, 10), dtype=np.uint8)\nrr, cc = circle_perimeter(4, 4, 3)\nimg[rr, cc] = 1\nimg\n",
        "execution_status": "success"
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  "references": [
    ".. [1] J.E. Bresenham, \"Algorithm for computer control of a digital",
    "       plotter\", IBM Systems journal, 4 (1965) 25-30.",
    ".. [2] E. Andres, \"Discrete circles, rings and spheres\", Computers &",
    "       Graphics, 18 (1994) 695-706."
  ],
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