# Huidong Tian's Blog

Now, the problem is how to access the header information of a photo? I didn’t find any R package can do that, and one reason I believe is that: there is wonderful open source software can do that well – ImageMagick. ImageMagick is a software suite to create, edit, compose, or convert bitmap images. After installing ImageMagick, We can using the shell function to execute ImageMagick from R.