#include “Windows.h” #include “stdio.h” #include “string.h” #include “malloc.h” #include <iostream> #include “time.h” #pragma warning(suppress: 4996) using namespace std; unsigned char* pBmpBuf;//Pointer to read image data int bmpWidth;//The width of the image int bmpHeight;//Height of the image RGBQUAD* pColorTable;//Color table pointer int biBitCount;//Image type, bits per pixel //Dice image: 16*16 two-dimensional array int touzi1[16][16] = { […]
Tag: grayscale
Opencv C++ 6. Grayscale transformation: linear transformation, grayscale inversion, logarithmic transformation, gamma transformation, (adaptive) histogram equalization
1. Principle of grayscale transformation: The original image pixel gray value r is mapped to a gray value s through the transformation function T: s=T(r). 2. Grayscale transformation method: Linear transformation (brightness and contrast adjustment): Principle: Linear transformation is a simple method of adjusting brightness and contrast by applying a linear transformation formula to the […]
Digital image processing experiment – Convert “original image.bmp” into a grayscale image, and perform histogram equalization on the resulting grayscale image; use histogram specification algorithm to process the three RGB channels of “original image.bmp” The histograms are changed to be consistent with “reference image.bmp”
1. Experimental objectives 1. Understand and apply the concept and application of histograms to analyze and process images. 2. Understand and apply the concept of histogram equalization and perform related image processing 3. Master the histogram specification algorithm and perform histogram specification processing and analysis on samples 4. Convert the “original image.bmp” into a grayscale […]
WPF grayscale application
Greyscale application in WPF Control name: GrayscaleEffect Author: WPFDevelopersOrg – Jinghua Original link [1]: https://github.com/WPFDevelopersOrg/WPFDevelopersSimple source code [2]: https://github.com/yanjinhuagood/WPFApplicationGrayscale Frameworks use .NET4 to .NET6; Visual Studio 2019; If you want to achieve the first grayscale effect, you need to change the theme color, but using the theme color requires recoloring which is slow. You need […]
HDL implementation of mean filter algorithm for grayscale images
Click the blue words to follow us Follow and star the public account, and exciting content will be delivered every day Source: Internet material 1.1 Introduction to mean filter algorithm The first thing to do is the simplest mean filter algorithm. Mean filtering is a typical linear filtering algorithm. It refers to giving a template […]
Two-dimensional discrete cosine transform for grayscale images
1. Introduction Discrete Cosine Transform, referred to as DCT transform, can convert spatial domain signals into frequency domain. In this topic, it converts two-dimensional pixel values into two-dimensional frequency signals. 2.Formula 2.1 Two-dimensional discrete cosine transform (2D DCT): Given an input matrix F of N×M (usually M is equal to N, N represents the horizontal […]
Kruise Rollout full-link grayscale practice
What is full-link grayscale? Aliware In the process of releasing an application, we usually want to use a small amount of specific traffic to verify whether the release of the new version is normal to ensure overall stability. This process is called grayscale publishing. Regarding grayscale release, we verify the stability of the new version […]
[Short track speed skating ten] Instruction set optimization and acceleration of non-local mean filtering (for the special case of 5*5 search, it can reach a single-core 1080P grayscale image speed of 28ms/frame). …
Non Local Means filtering (Non Local Means) is one of the three most commonly mentioned denoising and filtering algorithms (bilateral filtering, non-local means, BM3D). There are also many papers as the object of research and comparison, but there are also The fatal shortcoming is slow speed, which seriously affects the application scope of the algorithm. […]
C# manually parses grayscale PNG images into Bitmap
Question: When directly using the file path to load an 8-bit grayscale PNG image as a Bitmap, the format of the Bitmap will be Format32bppArgb instead of Format8bppIndexed. This will affect some judgments, so you need to manually parse the PNG data to construct the Bitmap step 1. Determine file format If you don’t know […]
[Pseudo-color image processing] Research on converting grayscale images into color images (Matlab code implementation)
Welcome to this blog Advantages of bloggers:Blog content should be as thoughtful and logical as possible for the convenience of readers. Motto:He who travels a hundred miles is half as good as ninety. The directory of this article is as follows: Table of Contents 1 Overview 2 Operation results 3 References 4 Matlab code implementation […]