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OpenCV 4 for Secret Agents

You're reading from   OpenCV 4 for Secret Agents Use OpenCV 4 in secret projects to classify cats, reveal the unseen, and react to rogue drivers

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Product type Paperback
Published in Apr 2019
Publisher Packt
ISBN-13 9781789345360
Length 336 pages
Edition 2nd Edition
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Authors (2):
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Joseph Howse Joseph Howse
Author Profile Icon Joseph Howse
Joseph Howse
Arun Ponnusamy Arun Ponnusamy
Author Profile Icon Arun Ponnusamy
Arun Ponnusamy
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Table of Contents (16) Chapters Close

Preface 1. Section 1: The Briefing FREE CHAPTER
2. Preparing for the Mission 3. Searching for Luxury Accommodations Worldwide 4. Section 2: The Chase
5. Training a Smart Alarm to Recognize the Villain and His Cat 6. Controlling a Phone App with Your Suave Gestures 7. Equipping Your Car with a Rearview Camera and Hazard Detection 8. Creating a Physics Simulation Based on a Pen and Paper Sketch 9. Section 3: The Big Reveal
10. Seeing a Heartbeat with a Motion-Amplifying Camera 11. Stopping Time and Seeing like a Bee 12. Making WxUtils.py Compatible with Raspberry Pi
13. Learning More about Feature Detection in OpenCV
14. Running with Snakes (or, First Steps with Python)
15. Other Books You May Enjoy

Planning the Angora Blue app

Angora Blue reuses the same detection and recognition models that we created earlier. It is a relatively linear and simple app because it has no GUI and does not modify any models. It just loads the detection and recognition models from file and then silently runs a camera until a face is recognized with a certain level of confidence. After recognizing a face, the app sends an email alert and exits. To elaborate, we may say the app has the following flow of execution:

  1. Load face detection and face recognition models from file for both human and feline subjects.
  2. Capture a live video from a camera. For each frame of video, it can do the following:
  • Detect all human faces in the frame. Perform recognition on each human face. If a face is recognized with a certain level of confidence, it sends an email alert and exits the app.
  • Detect all cat faces in...
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