Problem background: When uploading pictures on the mobile phone and printing watermarks in the background, it was found that the pictures were flipped 90 degrees, and the picture upload in the window was indeed displayed normally. Solution: 1. Reference dependencies: <dependency> <groupId>com.drewnoakes</groupId> <artifactId>metadata-extractor</artifactId> <version>2.7.2</version> </dependency> 2. Obtain the flip angle of the image, correct it, […]
Tag: degrees
Stewart six degrees of freedom forward solution and inverse solution calculation-C# and Matlab programs
Table of Contents 1. Calculation of forward solution of Stewart parallel six degrees of freedom (1) Overview (2) Matlab positive solution calculation 1. Reference procedure one 2. Reference procedure two (3) Calculation of correct solution of C# program 1. Project download link 2. Correct solution operation calculation (4) Collection of main program packaged download programs […]
Use GUI programming to implement a variable sine wave signal with a frequency of 100-500Hz, an amplitude of 0-2000, and a phase of 0-180 degrees. The signal sampling frequency is 5120Hz.
Process: Get the real-time value of the slider -> setting, sampling frequency, sampling interval, sampling time, sampling quantity, sum of sampling time -> get the value represented by slider2 and slider3 -> drawing matters -> will The variable is converted into a string, and then assigned to the display text of the edit box Focus […]
Data Structure – Six Degrees of Separation (Bloom Filter)
You’ve heard about the “six degrees of separation [1]” experiment and decided to test it out for yourself. Your plan is simple: choose two people at random, Alice and Bob, and a secret word. Ask Alice to post the message on their favorite social media, Touhiter, and post it to all followers, asking them to […]
Java latitude and longitude decimals and degrees minutes seconds mutual conversion tool class
In the work, I encountered the need to convert the decimals of latitude and longitude to degrees, minutes and seconds, similar to the following: 1. Writing tools Request parameters package com.sinosoft.springbootplus.lft.business.touristres.dto; import io.swagger.annotations.ApiModel; import io.swagger.annotations.ApiModelProperty; import lombok.Data; import lombok.experimental.Accessors; import javax.validation.constraints.NotNull; import java.math.BigDecimal; /** * <pre> * Longitude and latitude conversion entity * * * […]
Five degrees of freedom diy manipulator space interpolation algorithm (straight line and arc) simple test
Write in front The following program involves the following two parts: Forward and inverse kinematics algorithm: forward and inverse kinematics algorithm for five-degree-of-freedom manipulator (C language + Matlab) Simple matrix operation library: a self-written matrix operation library in C language Space linear interpolation simulation: Simple experimental results of five degrees of freedom diy robotic arm: […]
6 degrees of freedom parallel pull wire writing robot realizes writing function
1. Function Description The example in this article will realize the function of the R287 prototype 6-DOF parallel pull-wire writing robot (machine age). The robot has two parts: a drawing mechanism and a paper-feeding mechanism. The drawing mechanism is composed of 6 steering gear modules distributed in approximately regular hexagonal positions, which jointly control the […]
Android: Using Core.rotate to rotate the camera 90 degrees will cause Fatal signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr error
Description: When I ran the opencv routine tutorial-2-mixedprocessing today, I found that I used Core.rotate(mRgba,mRgba,Core.ROTATE_90_CLOCKWISE); Rotating the camera 90 degrees will cause Fatal signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr error. Rotating 180 degrees will not. error log: 2023-05-13 17:15:33.104 1652-1853 WindowManager system_server E win=Window{1069dad u0 Splash Screen com.michael.findfeature EXITING} destroySurfaces: appStopped=false win.mWindowRemovallowed=true win.mRem […]
8 degrees of freedom series quadruped robot realizes forward function
1. Function Description The example in this article will realize the forward function of the 8-DOF serial quadruped robot of the R253 prototype, which is composed of 4 2-DOF serial bionic legs . 2. Motion Algorithm for Series Jointed Robot The forward gait of the 8-DOF serial quadruped robot is to divide the four-legged robot […]
3 degrees of freedom parallel drawing robot realizes writing function (2)
1. Function Description The example in this article will realize the writing function of the 3-DOF parallel drawing robot of the R305b prototype. The prototype used in this experiment was made with Explorer compatible parts. 2. Electronic hardware In this example, the following hardware is used, please refer to: Main Control Board Basra main control […]