Dear All, I am not sure that R is exactly the right tool for doing what I have in mind, but a look at EBImage and rimage convinced me that this should be doable with R. I have a color image and I would like to do the following: convert the image into a grayscale image retaining only the red color (i.e. end up with a grayscale image where the only surviving color is red [or any color close enough to red]). Anybody has any idea about how to do that? Many thanks Lorenzo
Image Enhancing in R
2 messages · Lorenzo Isella, Ranjan Maitra
I am not really sure what you mean, but perhaps you want to convert the image into RGB mode, and zero out the other two (GB) vectors? Look up ?rgb and allied functions: may help. Ranjan On Thu, 6 Oct 2011 18:58:19 -0500 Lorenzo Isella
<lorenzo.isella at gmail.com> wrote:
Dear All, I am not sure that R is exactly the right tool for doing what I have in mind, but a look at EBImage and rimage convinced me that this should be doable with R. I have a color image and I would like to do the following: convert the image into a grayscale image retaining only the red color (i.e. end up with a grayscale image where the only surviving color is red [or any color close enough to red]). Anybody has any idea about how to do that? Many thanks Lorenzo
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.