Better unit tests with pytest-mock and monkeypatch
How to write better Python unit tests in pytest, from basic tests to mocking with pytest-mock and monkeypatch.
Posts by Year
2023
Managing Python environments with pyenv and pyenv-virtualenv
How to install and use different Python environments with pyenv and the plugin pyenv-virtualenv
2022
Question - AVCaptureSessionOutputs
What is the difference between the AVCaptureVideoDataOutput and the AVCaptureVideoDataOutputSampleBufferDelegate?
Question - AVCaptureDevice select front camera
How can I select the front camera as input device?
Discussion - Fully Convolutional Network vs. Autoencoder
Difference between Autoencoder and Fully Convolutional Network (FCN)
Object detector in SwiftUI with UIKit
Adding an object detection model to a SwiftUI app with UIKit.
Live camera feed in SwiftUI with AVCaptureVideoPreview layer
Tutorial on development of app with live camera feed and device rotation with UIKit hosted in SwiftUI so that an object detector can be added.
Using UIKit in SwiftUI - Views, layers, coordinates
Working with UIView, UIViewController, CALayer, and their coordinate systems in the MVC design pattern in UIKit and SwiftUI for iOS.
TensorFlow.js Part 3 - Web App
We develop a simple web application in JavaScript with React and use the model which we trained in Python. Part three of the three part series.
TensorFlow.js Part 2 - Convert Model
We convert a TensorFlow model which was trained in Python into the TensorFlow.js format so it can be used in JavaScript applications. Part two of three.
TensorFlow.js Part 1 - Develop Model in Python
We develop a TensorFlow model so that it can be converted into the TensorFlow.js format and integrated into a JavaScript application. Part one of three.
2021
Deconvolutions and what to do about artifacts
Deconvolutions, transposed convolutions, fractionally strided convolutions, and what to do about artifacts generated by them.
Exporting the YOLOv5 Model Into CoreML
How to export your YOLOv5 model into CoreML to be used on an iOS device.
Setting coreml model thresholds at runtime
How to modify IoU and confidence threshold of a coreml model in swift at runtime with MLFeatureProvider.
Making an object detection app in Swift
How to integrate a Pytorch model trained in Python into iOS (Swift) with AVFoundation and Vision.
The Mislabelled Objects in COCO
A look into the mislabelled objects in the COCO dataset with a focus on the traffic lights.
COCO Dataset Extensions for Driving Tasks
COCO dataset with refined traffic light labels red, green, and na for training driving-related object detectors and beyond.
How to use COCO for Object Detection
How COCO annotations are structured and how to use them to train object detection models in Python.
Mono vision distance approximation
How to estimate the distance to objects of known width using a single camera and an object detector in Python with OpenCV and Pytorch.
Is a ConvNet-based model always the best solution?
Lane line detection as example for the limits of non-learning based techniques.
2020
Feature Extractors Part 2 - SIFT and HOG
Part 2 of a brief introduction on hand-crafted feature detectors SIFT and HOG and how to use them in OpenCv, including code.
Feature Extractors Part 1 - Edge and Corner Detectors
Part 1 of a brief introduction on hand-crafted feature detectors and how to use them in OpenCv, including code.
Thoughts on NeurIPS 2020
Thoughts on the NeurIPS 2020 conference.
Setting up Detectron2 and Youtube downloader
Brief instructions on how to set up Detectron2 and the Youtube Downloader when using Anaconda.
ECCV 2020
Thoughts on the ECCV 2020 conference.
How to set up OpenCV, LibTorch, and Torchvision with Cmake for Mac
A step-by-step guide on how to set up OpenCV, LibTorch, and Torchvision using CMake for macOS.