[R] Image analysis and image questions

Henrik Bengtsson hb at stat.berkeley.edu
Sat Oct 13 07:08:51 CEST 2007

See the EBImage package on Bioconductor.org.  It builds on top of
ImageMagick.  /Henrik

On 10/12/07, Bio7 <marcel.austenfeld at uni-bielefeld.de> wrote:
> Dear R users,
> in my application i can transfer images to R with the help of Rserve. The
> images come from
> a java application. When i plot a greyscale image (values 0-255) with images
> (imageMatrix...as grey)
> the image is created with inverse colours. My first question is how can i
> plot the image with
> the default grey values. In the application the greys are (ImageJ):
> white=0,black=255.
> I would be also interested in operations on images inside R to test some
> image functionality.
> So which packages exist to do some image operations and how can i create and
> plot images with them (with available data structures like a list or a
> matrix)?
> Another point is the creation of coloured images inside R. How could i
> create and plot coloured images inside R and which data structure do i need?
> In addition to this question for coloured images -> are there any bit
> arithmetics available to seperate the colour space or do i have to transfer
> the rgb values seperately?
> Any help is appreciated
> With kind regards
> Marcel
> --
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