How to convert JPEG to image matrix in R

Question

I need to convert a JPEG image to a matrix. I want to run SVD on a matrix.

I used

library(jpeg)
library(biOps)
myjpg <- readJpeg("Snapshot_1.jpg")
> dim(myjpg)
[1] 398 506   3

I want to get the image matrix "myjpg" in the gray scale. Is there an R team that does this.

thank

+4

user1946217 Jul 31 '14 at 4:42

1 answer

Jota · Accepted Answer · 2014-07-31T05:03:43+0000

You are looking for:

imagedata(myjpg, type="grey")