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iOS Application Development with OpenCV 3

You're reading from  iOS Application Development with OpenCV 3

Product type Book
Published in Jun 2016
Publisher Packt
ISBN-13 9781785289491
Pages 228 pages
Edition 1st Edition
Languages
Author (1):
Joseph Howse Joseph Howse
Profile icon Joseph Howse

Table of Contents (13) Chapters

iOS Application Development with OpenCV 3
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
1. Setting Up Software and Hardware 2. Capturing, Storing, and Sharing Photos 3. Blending Images 4. Detecting and Merging Faces of Mammals 5. Classifying Coins and Commodities Index

Using the application and testing the tough cases


Gather your collection of objects, run BeanCounter, and observe your classifier's successes and failures. Also, check whether the detector is doing a good job. For the best results, obey the following guidelines:

  • Work in a well-lit area, such as a sunny room.

  • Use a flat, white background, such as a clean sheet of paper.

  • View one object at a time.

  • Keep the iOS device stable. If necessary, use a tripod or other support.

  • Ensure that the object is in focus. If necessary, tap the screen to focus.

  • If the object is shiny, ensure that it does not catch reflections.

Under these ideal conditions, what is your classifier's accuracy? Use BeanCounter to save some images of objects, and then select a few of them to add to the Xcode project as reference images. Rebuild and repeat. By training the classifier, can you achieve an accuracy of 80%, 90%, or even 95%?

Now, break the rules! See how the detector and classifier perform under less-than-ideal conditions. The...

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