Jan 19, 2019

Tensorflow 2.0: Keras is not (yet) a simplified interface to Tensorflow

 In Tensorflow 2.0 Keras will be the default high-level API for building and training machine learning models, hence complete compatibility between a model defined using the old tf.layers and the new tf.keras.layers is expected. In version 2 of the popular machine learning framework the eager execution will be enabled by default although the static graph definition + session execution will be still supported. In this post, you'll see that the compatibility between a model defined using tf.layers and tf.keras.layers is not always guaranteed.

Jan 18, 2019

Fixed camera setup for object localization and measurement

 A common task in Computer Vision is to use a camera for localize and measure certain objects in the scene. In the industry is common to use images of objects on a high contrast background and use Computer Vision algorithms to extract useful information. There's a lot of literature about the computer vision algorithm that we can use to extract the information, but something that's usually neglected is how to correctly setup the camera in order to correctly address the problem. This post aim is to shed light on this subject.

Nov 4, 2018

Tensorflow 2.0: models migration and new design

 Tensorflow 2.0 will be a major milestone for the most popular machine learning framework: lots of changes are coming, and all with the aim of making ML accessible to everyone. These changes, however, require for the old users to completely re-learn how to use the framework: this article describes all the (known) differences between the 1.x and 2.x version, focusing on the change of mindset required and highlighting the pros and cons of the new implementation.

Jul 28, 2018

Understanding Tensorflow's tensors shape: static and dynamic

 Describing computational graphs is just a matter connecting nodes correctly. Connecting nodes seems a trivial operation, but it hides some difficulties related to the shape of tensors. This article will guide you through the concept of tensor's shape in both its variants: static and dynamic.