## Shadow extraction from remote sensing images based on multi features (python+matlab code)

Source:
Work done in the "South surveying and mapping Cup" scientific and Technological Paper Competition in those years
First look at the effect:
Implementation idea:
Due to the existence of obstructions, the radiant energy of radiation sour ...

Posted by **dleone** on *Mon, 06 Dec 2021 13:28:14 -0800*

## Basic course of MATLAB (11) -- data visualization in two-dimensional (Continued)

catalogue
Today's goal:
Draw an image and title it
Subgraph drawing
Some little knowledge
grid setting border
box set border
Polar plot
Today's summary
Today's goal:
Draw an image and title it
First, let's draw a very simple figure, for example, draw an image of y = cos x.
The code is as follows:
%% Add a title to the graphic ( ...

Posted by **thomasadam83** on *Sun, 05 Dec 2021 09:17:05 -0800*

## One of the optimization methods for Matlab: one-dimensional nonlinear optimization: fminbnd

Preface
Due to the influence of many factors in the actual modeling process, its objective function or constraints are difficult to be expressed in a linear relationship. The optimization of such non-linear problems is called a non-linear programming problem, which is basically defined as an extreme value problem of an n-ary function under the ...

Posted by **TAViX** on *Sun, 28 Nov 2021 11:26:08 -0800*

## Experiment 4 design and implementation of neural network algorithm for handwritten digit recognition

Experiment 4 design and implementation of neural network algorithm for handwritten digit recognition
1, Experimental purpose
By learning BP neural network technology, handwritten digits are recognized, and the recognition rate is improved by structure based recognition method and template matching method.
2, Experimental equipment
PC matlab ...

Posted by **omanush** on *Sun, 21 Nov 2021 22:06:34 -0800*

## least square method

least square method
What is the essence of least squares Taking measuring the length with different rulers as an example, several measured values are obtained. How to determine the true value? "y, which minimizes the sum of squares of errors, is the true value." this is based on the fact that if the error is random, the measured ...

Posted by **britey** on *Fri, 19 Nov 2021 02:12:36 -0800*

## Power system power flow (realized by Matlab)

catalogue
1. Overview
2. Main tasks
3. Main content
4. PowerWorld simulation
(1) Normal operation
(2) Load increase
(3) Increase of generator output
5. MATLAB programming example
(1) Flow chart of power flow calculation program
(2) Program code of power flow calculation
6. Data acquisition (Baidu online disk)
1 ...

Posted by **Pantho** on *Wed, 17 Nov 2021 00:58:12 -0800*

## Modeling learning clock in the second day

Still follow @Sichuan rookie Punch in · the next day
Article catalog
1, This question
1. Use the knowledge learned on the first day to solve:
2. Understanding of this question:
(1) Branch definition method
Background:
Basic theory (problem solving steps):
Solution implementation 1:
Result 1: optimal solution: x1 = 4, x2 ...

Posted by **ranbla** on *Mon, 08 Nov 2021 09:36:56 -0800*

## Python Quick Start Manual for Matlab users

What is Matlab? It is the classic VB in the field of computing. They are at the bottom of the contempt chain in their respective fields.
Of course, this disdain chain is the disdain chain of programmers. For those who do not want to have an in-depth understanding of programming, they can ignore it, and there is no need to continue reading ...

Posted by **nosher** on *Thu, 28 Oct 2021 21:33:28 -0700*

## Matlab code of Zernike polynomial

1. Theory introduction:
Zernike polynomial [1] (Netherlands) physical scientistFrits Zernike )Is a polynomial sequence defined on the unit circle and satisfying orthogonality, which can be written as:
Among them, Is the j-th Zernike mode, 0 ≤ r ≤ 1, 0 ≤ θ ≤ 2 π, m and N are the angul ...

Posted by **jawinn** on *Tue, 19 Oct 2021 19:17:14 -0700*

## Good and bad solution distance method

Good and bad solution distance method
Forerunner chestnut
Limitations of analytic hierarchy process:
There should not be too many decision-making levels for evaluation. If there are too many, the difference between judgment matrix and consistency matrix may be very large. In the table of average random consistency index RI, n is up to 15If t ...

Posted by **upperbid** on *Sun, 17 Oct 2021 10:35:14 -0700*