Table of Contents ?edit 1. Monocular application prospects 2. Turn on the camera 3. Set the resolution Fourth, take pictures with the camera 5. Record video 6. Practical application of monocular combined with OpenCV 1. Monocular application prospects Monocular vision is widely used in deep learning and is one of the popular research directions in […]
Tag: camera
Camera calibration and 3D reconstruction – interactive camera calibration application OpenCV v4.8.0
Previous tutorial: Real-time pose estimation of textured objects Original author Vladislav Sovrasov Compatibility OpenCV >= 3.1 According to the classic calibration technique, the user must first collect all data and then run the cv::calibrateCamera function to obtain the camera parameters. If the average reprojection error is large, or the estimated parameters appear to be wrong, […]
Android-based rk3399 supports multiple USB cameras simultaneously
Android-based rk3399 supports multiple USB cameras at the same time 1. Preface 2. CameraHal_Module.h 3. CameraHal_Module.cpp 4. Compile & Burn Image 5. App verification 1. Preface Android system supports 2 cameras by default, one front camera and one rear camera To support a larger number of cameras, the code of the Android Hal layer must […]
Manually drive in CARLA, add stereo camera, lidar Lidar
CARLA usage logic: Create the client first Set to terminate if nothing is returned from the server for 2 seconds client = carla.Client(“127.0.0.1”, 2000) client.set_timeout(2.0) Get world from the client world = client.get_world() Set settings and apply Here we use asynchronous mode with a fixed time step settings = world.get_settings() settings.synchronous_mode = False # Enables […]
RTSP and RTMP use ffmpeg to push local cameras to the RTSP server
1. Streaming media: RTSP and RTMP 1. Working principles of RTSP and RTMP 1) RTSP working principle The user device sends an RTSP request to the video streaming platform The video streaming platform returns a list of requests that can be operated, such as play, pause, etc. The user device sends specific requests to the […]
Baumer Industrial Camera How Baumer Industrial Camera uses BGAPISDK and OpenCV to generate video (C++)
Baumer Industrial Camera Baumer Industrial Cameras Baumer cameras are high-performance, high-quality industrial cameras that can be used in a variety of applications such as object detection, counting and identification, motion analysis and image processing Baumer’s 10GbE cameras have excellent image processing performance and can transmit high-resolution images in real time. In addition, the camera features […]
Baumer Industrial Camera How to use BGAPISDK to use image callback functions through two different methods (C#)
How Baumer Industrial Cameras use BGAPISDK to use image callback functions in two different ways (C#) Baumer industrial cameras Technical background to the fixed frame rate functionality of Baumer industrial cameras Method 1: Use the function in the BGAPI SDK to complete the image data conversion in the image callback function Method 2: Use Bitmap […]
c The camera uses v4l2 to directly generate avi video (without using ffmpeg)
Customize the avi structure header file. Now that the camera picture cannot be displayed in real time, we are going to refer to fim (picture displayed in the terminal) and directly operate the display framebuffer to display the video. No need for qt etc. The generated video varies according to the performance of the machine, […]
[ROS2 Series] ORBBEC AstraPro camera performs rtabmap 3D mapping in ROS2
Table of Contents background: 1. Driving AstraPro camera 2. Install rtabmap error1: missing package 3. Try 4. Parameter explanation 5. Operation error2: Did not receive data since 5 seconds! 6. Effect? Edit error4: Background: 1. Equipment: pc;jeston agx orin 2. Environment: Ubuntu20.04; ROS2 (Foxy) 3. Master-slave configuration, jeston agx orin is the host 4.jeston agx […]
The front end calls the camera and implements the photo taking function
Foreword: A request I received recently is very interesting. The overall design realizes the function of imitating WeChat scan on the front end. I sorted out my thoughts and made a sharing. tips: If you want to realize the complete scanning function, you need to master some pre-requisite knowledge. This time we will first talk […]