Book Image

TensorFlow 2.0 Computer Vision Cookbook

By : Jesús Martínez
Book Image

TensorFlow 2.0 Computer Vision Cookbook

By: Jesús Martínez

Overview of this book

Computer vision is a scientific field that enables machines to identify and process digital images and videos. This book focuses on independent recipes to help you perform various computer vision tasks using TensorFlow. The book begins by taking you through the basics of deep learning for computer vision, along with covering TensorFlow 2.x’s key features, such as the Keras and tf.data.Dataset APIs. You’ll then learn about the ins and outs of common computer vision tasks, such as image classification, transfer learning, image enhancing and styling, and object detection. The book also covers autoencoders in domains such as inverse image search indexes and image denoising, while offering insights into various architectures used in the recipes, such as convolutional neural networks (CNNs), region-based CNNs (R-CNNs), VGGNet, and You Only Look Once (YOLO). Moving on, you’ll discover tips and tricks to solve any problems faced while building various computer vision applications. Finally, you’ll delve into more advanced topics such as Generative Adversarial Networks (GANs), video processing, and AutoML, concluding with a section focused on techniques to help you boost the performance of your networks. By the end of this TensorFlow book, you’ll be able to confidently tackle a wide range of computer vision problems using TensorFlow 2.x.
Table of Contents (14 chapters)

Creating an inverse image search index with deep learning

Because the whole point of an autoencoder is to learn an encoding or a low-dimensional representation of a set of images, they make for great feature extractors. Furthermore, we can use them as the perfect building blocks of image search indices, as we'll discover in this recipe.

Getting ready

Let's install OpenCV with pip. We'll use it to visualize the outputs of our autoencoder, in order to visually assess the effectiveness of the image search index:

$> pip install opencv-python

We'll start implementing the recipe in the next section.

How to do it…

Follow these steps to create your own image search index:

  1. Import the necessary libraries:
    import cv2
    import numpy as np
    from tensorflow.keras import Model
    from tensorflow.keras.datasets import fashion_mnist
    from tensorflow.keras.layers import *
  2. Define build_autoencoder(), which instantiates the autoencoder. First, let&apos...