Blog

In a previous tutorial titled Image Upload from Android to a Python-based Flask Server, we created a project in which an Android app uploads an image to an HTTP server created using Flask in Python.

This tutorial extends on the previous project to classify that image in the Flask server using a pre-trained multi-class classification model and display the class label in an Android app. The model is a multilayer perceptron (MLP) model created using Keras, which is trained on the MNIST dataset.

Continue reading “Image Classification on Android using a Keras Model Deployed in Flask”

Amongst all the cool new tech releases and updates that happened last year, three in particular stood out to me:

SwiftUI — because I’m so over XIBs and Storyboards. SFSpeechRecognizer providing on-device and unlimited usage of transcription ML Kit’s Translation API also providing on-device and unlimited usage of language translation

These three advances inspired a few projects of mine, in which I’ve combined them in various ways. For instance, I’ve created a speech translator that uses zero data, even while traveling internationally.

As pointed out to me by a reader here on Medium, it only makes sense, then, for me to combine them all into one ‘last’ ultimate example: and on-device subtitle generator for video.

Continue reading “On-Device Video Subtitle Generation in SwiftUI”

Machine learning is often viewed through the lens of transformation, whether it’s reshaping an industry, automating tedious tasks, or inspiring immersive experiences.

The latter transformation is front and center in Hart Woolery’s InstaSaber. It’s an ML-powered iOS app that lets users take a rolled up piece of paper and, by holding it in front of the phone’s camera, generate a realistic augmented reality (AR) lightsaber that’s highly-responsive to real-time hand movement.

Continue reading “InstaSaber: Transform a piece of paper into a lightsaber with mobile machine learning and AR”

With 3D Motion Sense technology already out on Pixel 4, it looks like our way of interacting with phones is going to change soon. Touchless interactions have a promising future for sure, with Apple’s most ambitious product to date— AR glasses—already under development.

Continue reading “Winks and Head Turns — Build a Tinder-Swipe iOS App Using ML Kit’s Face Detection API”

What is Model Evaluation?

Model evaluation is the process of choosing between models, different model types, tuning parameters, and features. Better evaluation processes lead to better, more accurate models in your applications.

In this article, we’ll be discussing model evaluation for supervised classification models. We’ll cover evaluation procedures, evaluation metrics, and where to apply them.

Continue reading “Classification Model Evaluation”

People are passionate about pizza. Deep dish, thin crust, traditional pan, flatbread — and those are just styles of crust, to say nothing of topping preferences. Pineapple? Anchovies??

With such a wide variety of styles and preferences to swear by, it’s important for pizza lovers to have an authoritative source for honest and legitimate reviews — and the chance to share their love of pizza with others.

Continue reading “One Bite pizza reviews: Building community trust with mobile machine learning”

WebViews in Android are often seen as a lazy programmer’s tool—Don’t have enough time to build a particular screen for your app? Just use a WebView to display a page from your website instead. Users won’t be able to tell the difference…right?

Jokes aside, while you’ll often hear other developers discouraging the use of WebViews, they’re often necessary. For example, if you want to make a transaction with your bank or credit card, that transaction screen is a WebView.

Custom login screen for apps where security is a concern is often a WebView instead of a native widget. Google Mobile Ads (or Admob) also uses a WebView to display Banner and Interstitial ads on your app.

Continue reading “Working with WebViews in Android”

If you’re looking for help in easily adding machine learning to your Android apps, you’ve come to the right place. In this article, we’ll learn how to get started, implementing a task known as text recognition.

Continue reading “Recognize Text in Images on Android with Firebase’s ML Kit”

I’ve always thought of community as something akin to a party. A thing that forms largely by happenstance, where the people involved are connected through discrete and clear purposes: Socializing, relaxing after a long work week, meeting new people.

So when I found myself in the role of building the Heartbeat community, I initially struggled to see a bigger picture. I had the vague sense that the main priority should be centered on putting the needs and desires of community members first—much in the same way I’d want to be a good host at a party.

Continue reading “Building the Heartbeat Community”