1, Introduction ROI, region of interest, captured image 2, Obtaining method Method 1: Using Rect cv::Mat src=cv::imread(“*.bmp”);//Read the original image cv::Mat matROI = src(cv::Rect(100,200,50,100));//Capture the original image, rectangular area Method 2: Use Range cv::Mat src=cv::imread(“*.bmp”);//Read the original image cv::Mat matROI = src(cv::Range(100,150),cv::Range(200,300));//Capture the original image, rectangular area 3, Image overlay Note: The copyTo function, clone […]
Tag: region
Front-end vue implements regional map-and marks histogram on the map
Rendering of Tibet’s regional planning and column chart 1. Download the js file of the regional map The regional map can be downloaded from China’s regional map here 2. Implementation code An ordinary html can be used as a reference Implement the regional map of Guangdong Province and label the histogram 3. Specific implementation code […]
Region, segment, fragmented area and table space structure
Area, segment, fragmented area and table space structure Structural diagram In addition, in the database, there are also concepts of extent, segment and tablespace. The relationship between rows, pages, areas, segments, and table spaces is as shown in the figure below: Regions, segments and fragmented areas Why should there be zones? The pages in each […]
Region-based stereo matching algorithm with matlab code
?About the author: A Matlab simulation developer who loves scientific research. He cultivates his mind and improves his technology simultaneously. For cooperation on MATLAB projects, please send a private message. Personal homepage: Matlab Research Studio Personal credo: Investigate things to gain knowledge. For more complete Matlab code and simulation customization content, click Intelligent optimization algorithm […]
2022 MathorCup Mathematical Modeling Question D Mobile Communication Network Site Planning and Regional Clustering Problem Ideas and Sample Codes
1 Question The scale of mobile communication technology is developing rapidly, and the scale of operations is getting larger and larger, resulting in increasingly complex communication networks. With the development of 5G, the communication bandwidth is getting larger and larger, but the coverage range of base stations is getting smaller and smaller, so that the […]
GEE16: Calculation and analysis of regional average daily precipitation
Precipitation 1. Calculation of regional average daily precipitation 2. Precipitation time series 3. Comparative analysis of annual time series of precipitation data 4. Precipitation contour drawing 1. Calculation of regional average daily precipitation Today we analyze a method for calculating regional average daily precipitation: Data information: Climate Hazards Group InfraRed Precipitation with Station data (CHIRPS) […]
Find the Top 3 popular products in each region – HiveSQL
Background: This is a SparkSQL exercise question in Shang Silicon Valley. This article is implemented using HiveSQL. Data set: user click table, product table, city table topic: ① Find the top three clicked products in each region; ② Based on ①, after finding the top three clicked products in each region, find out the percentage […]
The 2023 ICPC Asia Regionals Online Contest (2) E Another Bus Route Problem (supplementary question)
Problem Pik’s village consists of n residential buildings (labeled from 1 to n) connected by n?1 bidirectional roads. The village forms a tree structure, where each building is interpreted as a tree vertex, and each road is interpreted as a tree edge. Within the village, there are a total of m bus routes. The i-th […]
Python project practice: region growing algorithm based on 2D or 3D
Article directory 1. Introduction 2. Project actual combat 2.1, 2D image (10×10) 2.2, 2D image (100×100) 2.3. 3D image (10x10x10) 1. Introduction The region growing algorithm is a method for image segmentation that merges adjacent pixels into a region based on a certain similarity. step: (1) Initialization: Select a seed pixel point (or multiple seed […]
The 2023 ICPC Asia Regionals Online Contest (1) E. Magical Pair (Number Theory Euler Function)
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