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)

Detecting objects with YOLOv3

In the Creating an object detector with image pyramids and sliding windows recipe, we learned how to turn any image classifier into an object detector, by embedding it in a traditional framework that relies on image pyramids and sliding windows. However, we also learned that this approach isn't ideal because it doesn't allow the network to learn from its mistakes.

The reason why deep learning has conquered the field of object detection is due to its end-to-end approach. The network not only figures out how to classify an object, but also discovers how to produce the best bounding box possible to locate each element in the image.

On top of this, thanks to this end-to-end strategy, a network can detect a myriad objects in a single pass! Of course, this makes such object detectors incredibly efficient!

One of the seminal end-to-end object detectors is YOLO, and in this recipe, we'll learn how to detect objects with a pre-trained...