I have Android 6.0 in my smartphone. Can I install Petiole?
Yes, you can. Petiole works smoothly on smartphones with OS Android 4.4 and higher.

How to calibrate a camera?
To calibrate the camera, you need a calibration pad with chessboard squares. Here is a link to download and print it out using white paper: http://bit.ly/2jHhHps. One square must have a size 10 x 10 mm.

Starting the app, I see the OpenCV error. How can I solve this problem?
Please, try to use the latest version of the Petiole application. If it will not work – delete the application completely and re-install it. Also, try to update or re-insall OpenCV manager. We have experienced some cases when this method had worked fine.

Can data be stored in a file which can be imported into spreadsheet or statistics software on the PC?
Not yet. In the Petiole’s next version.

Is there a possibility to exclude petioles from leaf area measurement? Can also leaf dimensions (length, width) be measured by Petiole?
These options are included in the next release .

How does Petiole make its money?
Petiole is totally free for individual researchers and educational institutions. We have commercial arrangements with companies to cover our costs.

What’s Petiole going to do with my data?
All of your personal details are safe and secure and will never be shared with anyone else. We do use anonymised data at an aggregate level to drive efficiencies

Petiole has so great idea in its roots. Do you win any competitions with it?
Yes, we do. We are proud to be Finalist of GIST Tech-I 2015 Competition. This is an annual competition for science and technology entrepreneurs from emerging economies worldwide. The competition is a U.S. State Department initiative and is implemented by the American Association for the Advancement of Science (AAAS). In November 2015, Petiole ranked among the hottest 20 world startups by American business channel CNBC.

I want to join your team. Where do I need to send my CV?
We respect our team and its future members. Please, write directly to Maryna Kuzmenko, CEO Petiole, at maryna@petioleapp.com

I have a question regarding your application. What is the fastest way to connect with you?
Write us to support@petioleapp.com. You will receive an answer in the next 24 hours.