opencv learning notes five-dimensional and two-dimensional discrete convolution

Purpose of convolution: Convolution is mainly used for noise reduction, which is a way of noise reduction; Two dimensional discrete convolution includes Gaussian filtering, smoothing filtering, median filtering, bilateral filtering and guided filtering algorithms that can ensure the edge of the image; 1, Understand the source and classific ...

Added by amalosoul on Thu, 27 Jan 2022 02:07:06 +0200

Basic image processing use of ImageDraw module

✨✨✨ Thank you for opening Xiaobai's article "I hope you have made a little progress today and come closer to a better life!" 🌈   catalogue 🚀 Previous review 🍉 preface 🍉 Basic function application 🍉 Application example I 🍉 Application example II 🚀 Previous review Basic image processing (I)(1 message) basic ima ...

Added by wilded1 on Wed, 26 Jan 2022 23:56:06 +0200

OPenCV contour discovery

Introduction to contour discovery Definition of profile An outline represents a series of points (pixels), which form an ordered point set, so an outline can be understood as an ordered point set. Contour discovery definition Contour discovery is a method to find object contour based on image edge extraction. Therefore, the threshold se ...

Added by advoor on Wed, 26 Jan 2022 21:36:19 +0200

Basic usage of pytoch (data loading, type conversion)

This blog post will be released in Nuggets community first! preface Through the previous introductions, we probably know some basic concepts of tensor of our pytorch, as well as some details of our gradient and tensor replication. Tensor is very similar to numpy to a great extent. In some cases, we can even use tensor directly for calcul ...

Added by phonydream on Wed, 26 Jan 2022 20:33:43 +0200

Method of converting medical record pictures from pdf to text

Task: extract medical records. Some medical records exist in pdf books, but these PDFs are in picture format. These contents need to be converted into text content.Idea: convert the pdf file into a single picture set, and then ocr recognize the single picture, and splice the recognized text.Use pypdf2 module to read pdf and binary content, and ...

Added by kevinjo on Wed, 26 Jan 2022 12:20:45 +0200

Camera calibration (ROS camera_calibration & image_proc)

camera_calibration rosrun camera_calibration cameracalibrator.py --size 8x6 --square 0.108 --k 6 image:=/my_camera/image – size 8x6: the size of the chessboard is 8x6, and only the internal angle is calculated– square 0.024: the size of a square in the chessboard, in meters– k 6: number of radial distortion factors to use ...

Added by jolly on Tue, 25 Jan 2022 11:51:44 +0200

Gesture tracking based on Opencv+Mediapipe

Relevant introduction OpenCV is based on Apache 2 Cross platform for 0 licensed (open source) distribution computer vision and machine learning Software library, which can run in Linux,Windows,Android and Mac OS On the operating system. It is lightweight and efficient - it is composed of a series of C functions and a small number of C + + cla ...

Added by FraXTC on Tue, 25 Jan 2022 11:23:25 +0200

Wu Enda's machine learning homework: Logistic regression

Assignment topic 1 Logistic regression In this part of the exercise, you will build a logistic regression model to predict whether a student can enter college. Suppose you are an administrator of a university. You want to decide whether each applicant is admitted according to the results of two exams. You have historical data from previous app ...

Added by Dinosoles on Tue, 25 Jan 2022 06:33:05 +0200

Use CodeMirror to build the IDE used by data scientists

1. Introduction to codemirrorCodeMirror is a general text editor implemented with JavaScript. It is specially used for code editing. It has built-in multiple development language modes and plug-ins, and supports code highlighting, automatic completion, search, shortcut keys, etc.CodeMirror is an open source project licensed by MIT. At present, ...

Added by keyur.delhi on Mon, 24 Jan 2022 12:50:48 +0200

Heterogeneous data fusion management system PandaDB community version v0 3 release

PandaDB R & D team recently launched PandaDB community version v0 3. This version independently designs and implements distributed graph storage and graph query engine, removes the dependence on Neo4j community version storage and query engine, and is seamlessly compatible with Neo4j client call interface and graph query syntax Cypher. P ...

Added by dsds1121 on Sun, 23 Jan 2022 15:34:48 +0200