In the previous series of articles on median filtering, I have written about the generation method of 3×3 matrix template: Median filter design based on FPGA—-(3) Matrix template generation module design_verilog image generation 3*3 matrix-CSDN blog Now it seems that this method is relatively crude and simple. The general processing method is to store an […]
Tag: matrix
OneAPI Intel Experimental Matrix Multiplication Implementation
Introduction to OneAPI oneAPI is a cross-platform, open and unified programming model designed to simplify and accelerate heterogeneous computing. It is led by Intel Corporation and supported by a wide range of partners. The goal of oneAPI is to provide a unified programming environment that enables developers to write high-performance applications on different hardware architectures, […]
Euler angles (roll angle, pitch angle, yaw angle), rotation matrix, quaternion conversion and solution to universal joint deadlock
1. Overview The description method of the pose (position and direction) of an object is generally represented by two coordinate systems. One is the world coordinate system or the ground coordinate system. Here I call it the ground coordinate system, which belongs to the reference coordinate system; the other is its own Coordinate system, it […]
Depth-first search of directed graphs and dynamic selection algorithm of adjacency matrix
Introduction In graph theory, a directed graph is a graph structure with directional relationships between nodes. In practical applications, we often need to represent and operate directed graphs. In order to improve efficiency, we can dynamically select appropriate data structures for representation based on the size of the graph and the frequency of operations. Adjacency […]
Rotation Matrix – Mathematical Theory
Table of Contents Overview 1. Fixed rotation (Fix Angles) 2. Euler Angle 3. Summary of rotation matrix 4. Reference Overview The rotation matrix is a mathematical expression of posture, or generally speaking, the transformation matrix is an abstract mathematical variable. Its abstraction lies in the fact that when you see the data, you can’t judge […]
Osg::Transform/osg::MatrixTransform/osg::PositionAttitudeTransform/osg::autoTransform
One of the most widely used node type families in osg, application examples of osg::autoTransform are as follows: #include <osgUtil/Optimizer> #include <osgDB/ReadFile> #include <osgGA/TrackballManipulator> #include <osgViewer/ViewerEventHandlers> #include <osgViewer/CompositeViewer> #include <osg/Material> #include <osg/Geode> #include <osg/BlendFunc> #include <osg/Depth> #include <osg/Projection> #include <osg/AutoTransform> #include <osg/Geometry> #include <osgDB/WriteFile> #include <osgText/Text> #include <iostream> osg::Node* createLabel(const osg::Vec3 & amp; pos, float […]
Three-dimensional transformation matrix practice – rotation, scaling, mirroring, cross-cutting, translation, and orthogonal projection of three-dimensional point clouds
1. Rotation matrix (right-handed coordinate system) Rotate around the x-axis Rotation matrix: The matrix on the right is the original coordinates of the point cloud, and the matrix on the left is the rotation matrix Visualization: Rotate 90 degrees around the x-axis Code: import vtk import numpy as np import math def pointPolydataCreate(pointCloud): points = […]
[C++ Code] Collecting rainwater, the nearest larger element, the largest matrix in the histogram, monotonic stack–Code Thoughts
Topic: Daily Temperature Given an integer array temperatures, representing the daily temperature, return an array answer, where answer[i] refers to the temperature for the first i days, with the next higher temperature occurring a few days later. If the temperature is not going to rise after this, use 0 instead. Brute force solution, two levels […]
LED dot matrix display principle (font acquisition software + Keil + Proteus)
Foreword When I was writing this, I was still a little angry because I found that I followed the steps in the book exactly, but it turned out to be unsatisfactory. I had to debug myself later to solve the problem. -_-I will shed tears if I say too much, let’s go directly to the […]
STM32 uses MAX7219 to control dot matrix screen and dot matrix screen cascade
This article only provides corresponding program instructions and simple chip instructions on how to use STM32 to control and cascade dot matrix screens using MAX7219. For specific chip instructions, please find the data manual (it is easiest to find a Taobao merchant)< /strong> Table of Contents 1. Brief introduction to the chip 1. Chip pin […]