Book Image

Intelligent Mobile Projects with TensorFlow

By : Jeff Tang
Book Image

Intelligent Mobile Projects with TensorFlow

By: Jeff Tang

Overview of this book

As a developer, you always need to keep an eye out and be ready for what will be trending soon, while also focusing on what's trending currently. So, what's better than learning about the integration of the best of both worlds, the present and the future? Artificial Intelligence (AI) is widely regarded as the next big thing after mobile, and Google's TensorFlow is the leading open source machine learning framework, the hottest branch of AI. This book covers more than 10 complete iOS, Android, and Raspberry Pi apps powered by TensorFlow and built from scratch, running all kinds of cool TensorFlow models offline on-device: from computer vision, speech and language processing to generative adversarial networks and AlphaZero-like deep reinforcement learning. You’ll learn how to use or retrain existing TensorFlow models, build your own models, and develop intelligent mobile apps running those TensorFlow models. You'll learn how to quickly build such apps with step-by-step tutorials and how to avoid many pitfalls in the process with lots of hard-earned troubleshooting tips.
Table of Contents (14 chapters)

Using object detection models in iOS

In the previous chapter, we showed you how to use the TensorFlow-experimental pod to quickly add TensorFlow to your iOS app. The TensorFlow-experimental pod works fine for models such as Inception and MobileNet or their retrained models. But if you use the TensorFlow-experimental pod, at least as of this writing (January 2018), with the SSD_MobileNet model, you’re likely to get the following error message when loading the ssd_mobilenet graph file:

Could not create TensorFlow Graph: Not found: Op type not registered 'NonMaxSuppressionV2'

Unless the TensorFlow-experimental pod gets updated to include op not registered here, the only way to fix these problems is to create the custom TensorFlow iOS library by building it from the TensorFlow source, and that's why we showed you in Chapter 1, Getting Started with Mobile TensorFlow...