2
votes
3answers
132 views

Slow image processing using ReplaceAll

Can anyone explain me, why this line of simple code is so slow? And can it be improved somehow? ...
7
votes
3answers
214 views

Applying a transformation rule on an Image

I haven't been able to figure out why the following doesn't work: ...
9
votes
2answers
200 views

How to extract a specific element from EXIF photographic metadata?

It's now possible to import photographs into Mathematica and import the EXIF data at the same time: i = Import["ExampleData/coneflower.jpg", "ImageWithExif"] ...