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OpenCV 3.x with Python By Example

You're reading from   OpenCV 3.x with Python By Example Make the most of OpenCV and Python to build applications for object recognition and augmented reality

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Product type Paperback
Published in Jan 2018
Publisher Packt
ISBN-13 9781788396905
Length 268 pages
Edition 2nd Edition
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Authors (2):
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Gabriel Garrido Calvo Gabriel Garrido Calvo
Author Profile Icon Gabriel Garrido Calvo
Gabriel Garrido Calvo
Prateek Joshi Prateek Joshi
Author Profile Icon Prateek Joshi
Prateek Joshi
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Toc

Table of Contents (17) Chapters Close

Title Page
Copyright and Credits
Contributors
Packt Upsell
Preface
1. Applying Geometric Transformations to Images FREE CHAPTER 2. Detecting Edges and Applying Image Filters 3. Cartoonizing an Image 4. Detecting and Tracking Different Body Parts 5. Extracting Features from an Image 6. Seam Carving 7. Detecting Shapes and Segmenting an Image 8. Object Tracking 9. Object Recognition 10. Augmented Reality 11. Machine Learning by an Artificial Neural Network 1. Other Books You May Enjoy

How does ANN work?


In this section, we will see which are the elements taking part in an ANN-MLP. First, we will represent a regular ANN-MLP shape with one layer each of input, output, and hidden, and how the information flows across them:

An MLP network is formed by at least three layers:

  • Input layer: Every MLP always has one of these layers. It is a passive layer, which means that it does not modify the data. It receives information from the outside world and sends it out to the network. The number of nodes (neurons) in this layer will depend on the amount of features or descriptive information we want to extract from the images. For example, in case of using feature vectors, there will be one node for each of the columns within the vector.
  • Hidden layers: This layer is where all the groundwork happens. It transforms the inputs into something that the output layer or another hidden layer can use (there can be more than one). This layer works as a black box, sensing patterns within received...
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