ball-morphology
Morphological operations with ball shaped structuring elements
npm install ball-morphology
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Version | 0.1.0 last updated 10 months ago |
License | MIT |
Keywords | ball, morphology, dilate, erode, open, close, mathematical, image, volume, binary, vision |
Repository | git://github.com/mikolalysenko/ball-morphology.git (git) |
Bugs | https://github.com/mikolalysenko/ball-morphology/issues |
Dependencies | distance-transform, ndarray-ops, ndarray, typedarray-pool |
Dependents | mikolalysenko-hoarders |
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