[R] package ReadImages

[Uwe Ligges]

Note that ReadImages has been orphaned and is under the BSD license, so 
you can become maintainer and re-establish the package on CRAN.

Best,
Uwe Ligges



On 25.02.2013 07:50, PIKAL Petr wrote:
> Thanks to all.
>
> For the time being due to urgency I will stay with a copy of R 2.15.x with which ReadImages works. It is simplest solution which I can adopt immediately without much additional effort.
> However I will need to elaborate another solution in future, for which I will consider various suggested options.
> Regards
> Petr
>
> From: Greg Snow [mailto:538280 at gmail.com]
> Sent: Friday, February 22, 2013 5:54 PM
> To: PIKAL Petr
> Cc: r-help
> Subject: Re: [R] package ReadImages
>
> For some of the fancier transforms it may be easier to use an outside tool such as Imagemagick which will do a lot of these things.  There is even a C++ interface to imagemagick that may work nicely with packages like Rcpp if you don't want to use an intermediate file.
>
> But jobs like converting to grayscale can be very simple using R itself.  Many of the functions that read in images store them as 3 dimensional arrays and you would just need an apply command to change the 3 values for each pixel to a grayscale value (see col2gray in the TeachingDemos package for one way to do this, though loading in the whole package is probably overkill for something this simple).
>
> On Fri, Feb 22, 2013 at 1:57 AM, PIKAL Petr <petr.pikal at precheza.cz<mailto:petr.pikal at precheza.cz>> wrote:
> Thanks.
>
> I tried EBImage several years ago for another problem, but Bioconductor packages have some difficulties to install in our network/firewall environment and I am not in a position to change it. It seems to me also an overkill for such simple task.
>
> jpeg and png seems to me a bit too much simple, without direct possibility to transform from rgb to grayscale and normalisation.
>
> Anyway, I will give it a try.
>
> Petr
>
> From: Greg Snow [mailto:538280 at gmail.com<mailto:538280 at gmail.com>]
> Sent: Friday, February 22, 2013 6:45 AM
> To: PIKAL Petr
> Cc: r-help
>
> Subject: Re: [R] package ReadImages
>
> Some possibilities:  The EBImage package on Bioconductor; the jpeg and png packages read jpeg and png images.
>
> On Thu, Feb 21, 2013 at 8:26 AM, PIKAL Petr <petr.pikal at precheza.cz<mailto:petr.pikal at precheza.cz>> wrote:
> Dear all
>
> I prepared some image processing routine which depended on package ReadImages. Basically I imported image to R, changed rgb to grayscale, normalised an image made some selections and changed to image by imagematrix.
>
> Recently I learned that this package was removed from CRAN and can not be used in R 3.0.0.
>
> What options I have now to import image to R, change it to grayscale, make some computation or selection, change it back to image and plot for visual inspection.
>
> Thanks
> Petr
>
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> --
> Gregory (Greg) L. Snow Ph.D.
> 538280 at gmail.com<mailto:538280 at gmail.com>
>
>
>
> --
> Gregory (Greg) L. Snow Ph.D.
> 538280 at gmail.com<mailto:538280 at gmail.com>
>
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