Efficient image loading

Article catalog 1 installation 2 how to load images 2.1 Structure 2.2 OpenCV 2.3 Pillow 2.4 Pillow-SIMD 2.5 TurboJpeg 2.6 LMDB 2.7 TFRecords 3 load time comparison 4 Summary Image loading plays an important role in computer vision when writing optimized code. This process can be a bottleneck for ...

Posted by like_duh44 on Tue, 23 Jun 2020 20:18:57 -0700

Using Python, OpenCV reads every frame of the video, writes the video after modification

Write the video to a file using OpenCV 3 and save it on your own disk Try to only support writing in avi format. mp4 format will generate files but cannot play them. There is a format error; However, if you're trying to write videos in your own application as an archive using OpenCV, be prepared to: ...

Posted by p2grace on Tue, 23 Jun 2020 20:15:27 -0700

Python's setting and decoding of the verification code for rotating pictures

Python's setting and decoding of the verification code for rotating pictures In this paper, we mainly use python + selenium to crack the verification code of rotation breakthrough, in which numpy and OpenCV (CV2) are used for image splicing, conversion, mask, recognition, etc Rotate the picture to t ...

Posted by psychosquirrel on Mon, 22 Jun 2020 21:11:21 -0700

[pytorch] transform resnet into a full convolution neural network to adapt to different input sizes

Why is resnet input certain? Because resnet finally has a full connection layer. Because of this full connection layer, the size of the input image must be fixed. What are the limitations of a fixed input size? The original resnet will scale the image to 224 × 224 on the imagenet dataset, but there are some limitations in doing so: (1 ...

Posted by pcjackson06 on Sun, 21 Jun 2020 21:45:52 -0700

Face recognition based on opencv+python+pycharm

Face recognition based on opencv+python+pycharm catalog preface preparation in advance Face detection Sample collection Sample training epilogue preface I am a sophomore in the University, programming rookie. Recently, I did the final course design, and the topic I chose was face recognition. W ...

Posted by meritre on Fri, 19 Jun 2020 04:31:25 -0700

OpenCV Development Notes: red fat man 8 minutes to take you in-depth understanding of SIFT feature points (illustrated + easy to understand + program source code)

If the article is original, it cannot be reproduced without permission Original blog address: https://blog.csdn.net/qq21497936 Original blogger blog navigation: https://blog.csdn.net/qq21497936/article/details/102478062 Blog address: https://blog.csdn.net/qq21497936/article/details/106755662 Dear readers, knowledge is infinite and manpower ...

Posted by jbardin on Sun, 14 Jun 2020 21:36:12 -0700

Learn these Python art skills and wait for your girlfriend to praise you

1, Foreword Python has many libraries for image processing, such as pilot or OpenCV. Most of the time, it's useless to learn these image processing modules, but you don't know how to use them. Today, I've brought you some art skills to make your art come true. The circle of friends is full of praise. My girlfriend also praises you. How powerful ...

Posted by neutra on Fri, 12 Jun 2020 22:59:48 -0700

VS2015+OpenCV4.1.2 once and for all configuration mode and seamless switching between different OpenCV versions

VS2015+OpenCV4.1.2 complete and detailed once and for all configuration mode 1, Environment variable configuration 1. User variable settings Add user variable: opencv_ Pathj (my name is OpenCV_PATHhj) User variable value: D:\Program Files\OpenCV\opencv4.1.2\opencv\build D:\Program Files\OpenC ...

Posted by jazappi on Thu, 11 Jun 2020 21:57:32 -0700

OpenCV for multi-target tracking

OpenCV for multi-target tracking Project framework Code block analysis Full code and resource download connection Experimental framework, modules used The experimental framework is as follows ├── mobilenet_ssd ​ ├── MobileNetSSD_deploy.caffemodel └── MobileNetSSD_deploy.prototxt ├── multi_ob ...

Posted by evilMind on Thu, 11 Jun 2020 21:30:48 -0700

Opencv + nginx RTMP module for image streaming

This scheme realizes RTMP streaming after single frame image processing Reference resources Nginx and nginx RTMP module building RTMP video live and on demand servers,<jkuri /opencv-ffmpeg-rtmp-stream>,Compiling and installing ffmpeg under Linux (modification - simple and complex final version) Setting up nginx server download ngin ...

Posted by naskar on Fri, 29 May 2020 09:06:38 -0700