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ball-morphology

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  • License MIT

Morphological operations with ball shaped structuring elements

Package Exports

  • ball-morphology

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (ball-morphology) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

ball-morphology

Mathematical morphology for ndarrays where the structuring element is a ball in some Lp metric.

Example

First, let's read an image:

var morphology = require("ball-morphology")

require("get-pixels")("bwimage.png", function(err, data) {
  var r = data.pick(-1, -1, 0)
  
  // ... do stuff ...
})

Which gives us the following array:

We can dilate the image using the following command:

morphology.dilate(r, 1)

Which produces the following result:

Similarly, we can also perform an erosion:

morphology.erode(r, 1)

Giving the result:

For convenience, openings and closing are also implemented:

morphology.open(r, 1)
morphology.close(r, 1)

Install

npm install ball-morphology

API

var morphology = require("ball-morphology")

morphology.dilate(array, radius[, p])

Performs a binary morphological dilation with an Lp ball of a given radius

  • array is a binary image (updated in place)
  • radius is the radius of the ball in pixel units (may be fractional)
  • p is an optional argument giving the exponent of the metric. (Default 2)

Returns array

morphology.erode(array, radius[, p])

Performs a binary morphological erosion with an Lp ball of a given radius

  • array is a binary image (updated in place)
  • radius is the radius of the ball in pixel units (may be fractional)
  • p is an optional argument giving the exponent of the metric. (Default 2)

Returns array

morphology.open(array, radius[, p])

Performs a binary morphological opening with an Lp ball of a given radius

  • array is a binary image (updated in place)
  • radius is the radius of the ball in pixel units (may be fractional)
  • p is an optional argument giving the exponent of the metric. (Default 2)

Returns array

morphology.close(array, radius[, p])

Performs a binary morphological closing with an Lp ball of a given radius

  • array is a binary image (updated in place)
  • radius is the radius of the ball in pixel units (may be fractional)
  • p is an optional argument giving the exponent of the metric. (Default 2)

Returns array

Credits

(c) 2013 Mikola Lysenko. MIT License