Programmer Group

1. Laplace sharpening Laplace transform is an integral transform commonly used in engineering mathematics; Laplace operator is a second-order differential operator in n-dimensional Euclidean space; With isotropy, the first derivative of digital image is: The second derivative is: So the Laplace operator is: The four neighborhood templa ...

Preface Today, using the expression packs that you downloaded yesterday, you can use them to put together a wave of mosaic pictures. That's good. Don't talk too much. Let's start happily! development tool Python version: 3.6.4 Related modules: opencv-python module; numpy module; tqdm module; argparse module; And some of the modules tha ...

Running environment and compiling tools WindowsVS Code Programming language and library version libraryeditionPython3.7.0copynothingnumpy1.19.2opencv3.4.2PIL8.1.0matplotlib3.4.3 Question 1 black and white image grayscale scanning (20 points) Implement a function s = scanLine4e(f, I, loc), where f is a gray image, I is an integer, and loc ...

1, Project introduction:   let's first show you the effect of this small project:   pic.bmp image generated after running   yes, the main function of this project is to generate corresponding images through functions.   the main technologies used are: IO stream, BMP format analysis and object-oriented programming. &emsp ...

GUI Orthogonal Latin Square+2-D Arnold Scrambled Image Encryption 1. Introduction 1 Purpose of digital image scrambling Up to now, more mature information hiding algorithms are basically based on images as carriers. Image scrambling, as the name implies, is to scramble the image to hide the real content of the original image. Digital image ...

FCM algorithm is a clustering algorithm based on partition. Its idea is to maximize the similarity between objects divided into the same cluster and minimize the similarity between different clusters. Fuzzy C-means algorithm is an improvement of ordinary C-means algorithm. Ordinary C-means algorithm is hard for data division, while FCM is a f ...

catalogue 1. Basic principle of Zhang's calibration method 1.1 camera pinhole model 1.2 homography matrix H 1.3 internal parameters of camera 1.4 external parameters of camera   1.5 optimization parameters 1.6 summary 2.OpenCV implementation 2.1 feature point detection and target coordinate initialization 2.2 camera calibration ...

1 Introduction 1 origin and development of ant colony algorithm (ACA) In the process of studying the new algorithm, Marco Dorigo and others found that when ant colony is looking for food, they can exchange foraging information by secreting a biological hormone called pheromone, so they can quickly find the target. Therefore, in their doctoral ...

1. Introduction to Sparse Representation 1 Sparse Representation Theory Sparse means that most or all of the original signals are represented by a linear combination of fewer basic signals. After sparse representation, the more sparse the signal is, the more accurate the reconstructed signal will be. Set x< Rn as the signal to be processed ...

Algorithm overview The programming language used in this program is C#. C #'s Aforge.imaging library was initially used. After many debugging and algorithm function analysis, it is found that there are great problems in the implementation of FFT in the library. It can only transform the picture Fourier, but not the inverse transform. And ...