Article directory Preface 1 Barcode detection based on Opencv + Kmeans + Zbar 1.1 Barcode detection preprocessing 1.1.1 Template matching 1.1.2 Use K-mearn algorithm (clustering algorithm) to process barcode frames 1.2matplotlib visual barcode detection frame 1.3 Detection effect 2 Barcode detection based on sharpening + bilateral Gaussian filtering + Zbar Summarize Other articles Original statement: […]
Tag: lines
The use of ThreadLocal is not standardized, and there are two lines of tears online.
ThreadLocal is an important class in Java, which provides a mechanism for creating thread-local variables. This allows each thread to have its own independent copy without affecting each other. In addition, ThreadLocal is also a focus of the interview. There are many classic articles on the Internet for analysis, but today we mainly analyze an […]
c++ vision—-using polygons to surround outlines
Outer rectangle boundary: boundingRect() function #include <opencv2/opencv.hpp> #include <iostream> #include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> using namespace std; using namespace cv; #include <iostream> #include <fstream> using namespace cv; //Contains the cv namespace #include <opencv2/core/core.hpp> int main() {<!– –> //Initialize variables and random values Mat image(600, 600, CV_8UC3); RNG & rng = theRNG(); //Loop, press the ESC, Q, […]
B. Histogram Ugliness
Table of Contents 1.Problem 2.Input 3.Output 4.Examples 4.1input 4.2output 5.Code 6.Conclusion 1.Problem Little Dormi received a histogram with nn bars of height a1,a2,…,ana1,a2,…,an for Christmas. However, the more he played with his new histogram, the more he realized its imperfections, so today he wanted to modify it to his liking. To modify the histogram, Little […]
What cool things can be done with 10 lines of Python code?
Python has won the favor of many developers with its concise code. This has prompted more developers to use Python to develop new modules, thus forming a virtuous cycle. Python can achieve many interesting operations with shorter code. Let’s take a look at what interesting functions we can achieve with no more than 10 lines […]
echarts combines stacked columns and polylines and zooms the chart
ECharts official website address Apache EChartsApache ECharts, a JavaScript-based data visualization chart library, provides intuitive, vivid, interactive, and customizable data visualization charts. https://echarts.apache.org/zh/index.html Implementation renderings 1. Prepare dom for echarts Be sure to set the width and height, otherwise the chart will not be displayed. <div style=”width: 100%; height: 328px;” id=”institutional-user”></div> 2. Set/get chart data […]
What cool things can be done with 10 lines of Python code?
Python has won the favor of many developers with its concise code. This has prompted more developers to use Python to develop new modules, thus forming a virtuous cycle. Python can achieve many interesting operations with shorter code. Let’s take a look at what interesting functions we can achieve with no more than 10 lines […]
What cool things can be done with 10 lines of Python code?
Python has won the favor of many developers with its concise code. This has prompted more developers to use Python to develop new modules, thus forming a virtuous cycle. Python can achieve many interesting operations with shorter code. Let’s take a look at what interesting functions we can achieve with no more than 10 lines […]
[Java Project Recommendation: Dark Horse Headlines] How do you implement your article publishing business?
Foreword On the way to learning Java, I still encountered many good and good projects. I would like to share them with you today. I hope it will be helpful to you in your interview! I will continue to recommend other good projects in the future. This time I recommend the open source video dark […]
[Java Project Recommendation: Dark Horse Headlines] Asynchronous uploading and delisting of self-media articles (implemented using Kafka middleware)
The function of uploading and delisting self-media articles is completed Requirements analysis Process description Interface definition Description Interface path /api/v1/news/down_or_up Request method POST Parameters DTO Response Result ResponseResult DTO @Data public class WmNewsDto {<!– –> private Integer id; /** * Whether to put on the shelves 0 off the shelves 1 on the shelves */ […]