segment {EBImage} | R Documentation |
Fucntions to segment images and detect edges.
## S4 method for signature 'Image': edge(x, r=0, ...) ## S4 method for signature 'Image': segment(x, cl=10, s=1.5, ...) ## FIXME: 'fill' implemented incorrectly because of unclear API ## S4 method for signature 'Image': fill(x, col, xoff, yoff, fuzz=10, method="floodfill", ...)
x |
An object of Image . |
r |
The radius of the pixel neighbourhood to take into account. The 0 value enables automatic radius selection. |
cl |
Minimum cluster size in pixels . |
s |
The smoothing threshold. |
col |
The fill colour in any format (character , gray
value or integer byte-coded value). |
xoff, yoff |
The point at which to start the fill. |
fuzz |
Colour tolerance, within this interval the colours are considered the same. |
method |
Fill method. |
... |
Reserved. |
edge
returns an image of edges between different colours in the
original image. Most effective on binary images.
segment
segment an image by analyzing the histograms of the color
components and identifying units that are homogeneous with the fuzzy
C-means technique (source and implementation ImageMagick
). The
smoothing threshold eliminates noise in the second derivative of the
histogram. As the value is increased, you can expect a smoother second
derivative.
fill
should allow colour fill, but ImageMagick API is not clear and the
current implementation does not seem to produce any reasonable result.
Therefore the function will currently produce an error message, should be
corrected in future releases.
A transformed image in an object of Image
.
Oleg Sklyar, osklyar@ebi.ac.uk, 2005-2006
ImageMagick: http://www.imagemagick.org.