Primary Color:
Primary Text:
Secondary Color:
Secondary Text:
Tertiary Color:
Tertiary Text:
Color Picker
Module Title
Module Title

Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Ut non turpis a nisi pretium rutrum. Nullam congue, lectus a aliquam pretium, sem urna tempus justo, malesuada consequat nunc diam vel justo. In faucibus elit at purus. Suspendisse dapibus lorem. Curabitur luctus mauris.

Module Title
Module Title

Select a predefined style from the drop-down or choose your own colors via the handy mooRainbow based color-chooser. When you are satisfied with your selection, click the "Apply Colors" button below to store your selection in a cookie.

Apply Colors


Facebook_icon_64 Twitter-icon_64

NASATalk Community

We have 1560 guests online

Translate this page

Home Blogs LeafSnap - the Ultimate Green App

LeafSnap - the Ultimate Green App

Open as PDF Send to a friend Print Version
  Votes (0) | Hits (1436) | Comments (0)
Written by
23 Jun 2011

Columbia University  has recently published an app that utilizes Apple’s face recognition technology to identify different plant species. It’s called LeafSnap and is really quite ingenious. Say, on my walk through the woods one day, I come upon a species of tree unfamiliar to me. No problem. I just pull out my iPhone (or iPad if I had a newer one with a camera), snap a photo of a leaf, and the app will compare the image to a database of more than 8,000 images, returning the most likely matches.

The application also sends the image to a central database that records the location and date so that we can track the number of species in different locations. This is amazing.

Our own Chuck Wood used this app recently on an outing and gave it a generally favorable review. However, he noted a couple of limitations. First, the image needed a white background to work properly (so take an index card along with you on your hike). Second, the leaf needs to be flat for good recognition (so take along some Scotch tape). One of Chuck's leaves returned more than 100 possible matches–a bit more than he had hoped for.

But problems aside, the possibilities of such technology in education are immense. There already are apps for identifying constellations. Identifying rock types in a geology field trip or cloud types in a meteorology class would be possible. Or perhaps the avid coin collector would be able to identify that rare coin. The possibilities are virtually unlimited.

See for more info and to get this free app. Give it a try and let us know how you might incorporate it with your students. And let us know if there are similar photo recognition apps that might be useful in the classroom.

Related URL/ Weblink
Last update (10 Aug 2012)


There are no comments for this item

Be the first to leave a comment

Login to leave a comment


RSS- Click to Subscribe


© 2011 by Wheeling Jesuit University/ Center for Educational Technologies® 316 Washington Ave., Wheeling WV, 26003-6243. All rights reserved. Privacy Policy and Terms of Use

Contact Us

If you have any questions, comments, or ideas for further enhancing the user experience of this site, contact us at