SLAM learning notes -- coordinate transformation and eigen Library
Vector basic knowledge
slightly
coordinate transformation
Basic concepts of coordinate transformation
I recommend taking a look at his linear algebra series 3blue1brown
The following formula represents the most basic transformation, Euclidean transformation (only rotation + translation), and R is an orthogonal matrix. Left multiplying ...
Added by jmicozzi on Mon, 31 Jan 2022 04:26:37 +0200
Numpy common function summary
Jupyter notebook is used in this article, so numpy is only introduced at the beginning and not later. If it is run in other compilers, please ensure that numpy is introduced
1 create array
import numpy as np
1.1 using array() to import vectors
vector = np.array([1, 2, 3, 4])
vector
array([1, 2, 3, 4])
1.2 numpy.array() can als ...
Added by phice on Sun, 30 Jan 2022 06:07:32 +0200
Cryptohack Title Record Mathematics Section Lattice WriteUp
Backpack Cryptograph is missing
Mathematics
Lattices
1. Vectors
Basic vector-to-scalar operations
Title:
v = (2,6,3), w = (1,0,0) and u = (7,7,2), calculate 3*(2*v - w) ∙ 2*u.
Calculate directly using sage
sage: v = vector([2,6,3])
sage: w = vector([1,0,0])
sage: u = vector([7,7,2])
sage: 3*(2*v-w)*2*u
702
flag is 702
2. Size ...
Added by ryan-uk on Thu, 27 Jan 2022 00:03:13 +0200
Matrix problem in C language
I Matrix multiplication
1. Theorem:
The multiplication of two matrices can be defined only when the number of columns of the first matrix A is equal to the number of rows of the other matrix B. If a is m × N matrix and B are n × p matrices whose product C is an M × p matrix.
For example:
2. thinking
1. i and ...
Added by Rigo on Wed, 26 Jan 2022 19:44:25 +0200
On the new method of multi-point evaluation of polynomials based on transpose principle (attach simple but large constant code)
preface
Recently, I encountered the problem of multi-point evaluation, but I haven't learned the classical polynomial modular version, so I learned the new method directly.
This new method is actually very easy to understand, but it still took me too long (I'm a vegetable)
as paper As mentioned in, the code of this practice is very simple an ...
Added by biltong on Wed, 26 Jan 2022 19:40:09 +0200
OpenGL blasting plan mathematics, coordinates, camera, component model
Chapter 3 - Mathematics, coordinates, cameras and component models
In Chapter 2, we have preliminarily discussed shaders. In this chapter, we will explore how to make objects move (most importantly, rotate) in OpenGL. It is assumed that you are already familiar with basic linear algebraic calculations: vector number multiplication, point ...
Added by khaitan_anuj on Sun, 23 Jan 2022 16:31:05 +0200
Matlab journey (full version)
catalogue
0 main content
1. Development of MATLAB
2. Advantages of MATLAB
3. Working environment of MATLAB
3.1 command window
3.2 figure window
3.3 file editor
4 help system
5 code system summary
0 main content
Development of MATLAB
Advantages of MATLAB
Working environment of MATLAB
help system
...
Added by tomhilton on Sun, 23 Jan 2022 10:43:37 +0200
Easy to understand and explain gradient descent method
Original author: King James, master of data science, King's College London Original address:[ Portal]
preface
For entry into machine learning, you must understand the gradient descent method. Although the gradient descent method is not directly used in machine learning, understanding the thinking of gradient descent method is the basi ...
Added by osiris1603 on Wed, 05 Jan 2022 08:26:59 +0200
Numpy Basics - array properties, array creation, and multiple indexes
Numpy Basics (I)
Array properties
The dimension of NumPy array is called rank. Rank is the number of axes, that is, the dimension of the array.
In NumPy, each linear array is called an axis, that is, dimensions. For example, a two-dimensional array is equivalent to two one-dimensional arrays, in which each element in the first one-dimensiona ...
Added by zsxdcfv21 on Tue, 04 Jan 2022 13:16:57 +0200
1228 (indefinite integral, matplotlib,leetcode21,26)
Fundamentals of Mathematics (indefinite integral)
1. Indefinite integral
1.1 definition of indefinite integral
Indefinite integral is the inverse operation of derivation, but indefinite integral f(x) is a representative element, and its derivative is f(x), but it is not unique.
1.2 basic formula of indefinite integral of elementary functio ...
Added by drunknbass on Tue, 04 Jan 2022 09:18:01 +0200