-
The MediaDevices.getUserMedia() is the only API used to access cameras from web browsers. Although it is simple, to implement a complete web camera viewer, there are still a lot of work to do. There was no existing JavaScript camera widget available until Dynamsoft released the Camera Enhancer library recently. Now,...
-
In the previous article, we’ve created a React Native Vision Camera frame processor plugin for Dynamsoft Barcode Reader (DBR). Let’s continue to create the frame processor plugin for iOS. This article is Part 2 in a 3-Part Series. Part 1 - Build a React Native Vision Camera Frame Processor Plugin...
-
The previous popular react-native-camera project is now deprecated in favor of react-native-vision-camera. VisionCamera offers new APIs, better performance, improved stability and more features. It has a feature called Frame processors, which makes it easy to integrate extra image processing abilities. We are going to create a frame processor plugin to...
-
Creating a virtual camera is useful to test camera-dependent applications. We can use static images or videos as the image source for the virtual camera to test things like barcode reading, text recognition, and document scanning. Adopting pyvirtualcam Creating a virtual camera involves complex driver development. Fortunately, there have already...
-
As the dominant JavaScript document scanning SDK, Dynamic Web TWAIN has recently adopted WebAssembly as the new weapon. From version 17.2, Dynamic Web TWAIN does not only support cross-platform (Windows, Linux, and macOS) scanner access, but also allows developers to utilize desktop and mobile cameras to scan documents using JavaScript....
-
A week ago, I made an experiment to test the QR code detection performance with YOLOv4 on Android. The inference time of running the YOLOv4 model on CPU is more than 100ms, which does not reach my expectation. Since Android Neural Networks API (NNAPI) provides hardware acceleration for TensorFlow Lite...
-
This article guides you through the process of creating an enterprise-class PHP barcode extension with Dynamsoft Barcode Reader and PHP source code on Ubuntu 18.04. Environment Ubuntu 18.04 lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.5 LTS Release: 18.04 Codename: bionic Install PHP and Dynamsoft...
-
In my previous article, I demonstrated how to implement a simple Android QR code scanner. Based on the codebase, I am going to do something more interesting - integrate the YOLOv4 tiny model that I trained for QR code detection into the Android project. Is YOLO tiny competent for real-time...
-
React Native is an open-source UI software framework made by Facebook. It enables developers to use the React framework to create applications for Android, iOS, macOS, Windows, etc. The architecture of React Native is illustrated in the following diagram 1: As you can see, there are four core sections. The...
-
A QR code scanner application primarily consists of two parts: camera preview and QR code scanning. There are many Android QR code scanner apps downloadable in the Google Play Store. However, it is more interesting to create a QR code scanner by yourself than to use an existing one. This...