accelerometer calibration

Source Address: http://www.geek-workshop.com/thread-1695-1-1.htmlThis post is translated from the IMU (accelerometer and Gyroscope devices) guide used in embedded applications.This article mainly introduces the mathematical models and basic algorithms of accelerometers and gyroscopes, and how to fuse the two, focusing on the discussion of algorithms and ideas.IntroductionThe purpose of this guide is to introduce inertial MEMS sensors, especially accel

Camera Calibration Toolbox for Matlab This was a release of the Camera calibration Toolbox for matlab®with a complete documentation. This document may also is used as a tutorial on camera calibration Since it includes general information about calibration , references and RELATED links. Please have the bugs/question

iOS New Accelerometer Event"iOS New Accelerometer event "1, iOS5.0 before, you can use Uiacceleration to monitor the accelerometer event.2, after the Bug iOS5.0, Uiaccelerometerdelegate has been depreacated, as follows:　　Deprecated is not to say, but it means that in the future version will be deleted, so if you do not want to update knowledge, use Uiacceleromete

Cocos2d-x event distribution mechanism-accelerometer event monitoring, cocos2d-x Accelerometer Event monitoring mechanism In the previous article introduced the cocos2d-x touch event mechanism, this to introduce the next game is also often used in the accelerator events, these are the game is often used. An important input source on a mobile device is the device direction. Most devices are equipped with an

Original articles, welcome to reprint. Reprint Please specify: Reproduced from Cheung's blog Original link: http://blog.csdn.net/humanking7/article/details/44756235 The previous article spoke about the camera's calibration of the basic knowledge of visual measurement in four coordinate systems . The following focuses on the famous Zhang Zhengyu calibration Method . => 1. Preliminary knowledge => 1.1. From p

When repairing a Seagate hard drive, if a bad channel is badly needed to be fully repaired by calling the factory calibration program, here is the difference between the full auto-calibration of the efficiency source Seagate HDD and the F-class calibration.Let's start by explaining what a full automatic calibration is:The Seagate hard drive is shipped with a full

Simulation Software source code location in: http://download.csdn.net/detail/dijkstar/5565111,http://www.pudn.com/downloads552/sourcecode/windows/other/detail2276765.html 1 Principle Assuming a sampling system, the ad part can obtain the number, and the corresponding physical quantity is voltage (or other ); ① If an ad Value Point xmin is calibrated at "zero" and an ad Value Point xmax is calibrated at "maximum", based on the principle that "Two Points form a straight line, we can get a st

Tags: trait is Ted systems axes osc eset Android noteOperating system: Windows8.1 Graphics: Nivida gtx965m Development tools: Android Studio 3.0.0 | Cardboard 1.0 Before discussing the implementation in depth, it is necessary to understand the relationship between the IMU sensor and the coordinate system of the Android system and the relationship transformation, so that the coordinate system can not be mixed in the implementation and application. In this loan opportunity to translate Nvdia an

The LM algorithm has a total of three applications in camera calibration.(1) Single-target or double-target, in the case of internal-fixation, the best external parameters are calculated. The corresponding function in OpenCV is FINDEXTRINSICCAMERAPARAMS2.(2) The best internal and external parameters are calculated when the internal and external parameters are not fixed in a single target setting. The corresponding function in OpenCV is CALIBRATECAMERA

Camera calibration is used for mechanical arm capture and so on (points on the image are mapped to three-dimensional coordinates by calibration ), In laboratory or engineering, we often need to calculate the two-dimensional image coordinates of the captured image. As shown in, we have such an image. We need to calculate the three-dimensional positions of the object and the manipulator so that the manipulat

First, the conceptAccelerometer: Measures the acceleration in three directions of the x, Y, Z axis by sensing the total amount of inertial forces in a particular direction.Gyroscope: Measures the value of rotation around the x, Y, and z three directions. Feature: If you keep your phone flat while rotating it, the accelerometer value will not change, at which point the rotation value around the z axis is changed. Rotating the device clockwise generates

Coremotion is a framework dedicated to motion, which contains two parts of accelerometers and gyroscopes, before iOS4 the accelerometer is the Uiaccelerometer class responsible for collecting data, Now generally use coremotion to deal with the acceleration process, but because Uiaccelerometer is relatively simple, the same people are used. Accelerometer is determined by three axes, the user's most common op

ObjectiveBefore someone made a mobile phone anti-theft app through the iphone's accelerometer, and it was through this anti-theft app to get Angel investment. From then on gorgeous turn, the company develops the vivid. Although this project is not very good at the end, but it is really a nice idea.Maybe you don't know, every iphone has an accelerometer built in. This allows the built-in

Transfer from http://blog.csdn.net/a345017062/article/details/6459643A gyroscope is an internal gyroscope, whose axis is always parallel to the initial direction due to the gyro effect, so that the actual direction can be calculated by deviations from the initial direction. The gyroscope in the cell phone is actually a very sophisticated chip with ultra-tiny tops inside.Accelerometers are used to detect the size and direction of the acceleration that the phone is subjected to, while the mobile p

Final:Cocos2d-x, the inheritance structure of layer layers:As you can see from the image above:several direct sub-categories of emphasis are: Control, ScrollView, Menu, Layercolorwhere Layercolor can make a layer color the subclass of control, which is all the classes that interact with the user, such as: button, slider, etc.0. Cclayer OverviewA game can have a lot of scenes, each scene may contain more than one layer,The layers here are generally cclayer objects. The cclayer itself has almost n

Acceleration SensorThe acceleration sensor of the mobile phone is calculated by the offset of the x, Y, z three axes.The basic API in code is mainly focused on the Accelerometer typeThe main thing is to use this type of object to capture readingchanged events to monitor the change in acceleration values.X, Y, Z acceleration sensing values1 StackPanel>2 TextBoxx:name= "Txtx"Header= "X:"/>3 TextBoxx:name= "Txty"Header= "Y:"/>4

In the field of machine vision, camera calibration is a very basic task. At present, our frequently used calibration tools are OPENCV and MATLAB. OpenCV's Checkerboard Corner extraction API requires us to specify the horizontal points of the checkerboard in order to extract the corner points. Its main process is to take the picture two value, morphological processing, to find a number of four-sided, to eac

This article is from: http://ucdchina.com/snap/9797,thank you! In June 8 last year, the Great Apple company released the latest iPhone 4G, which has many hardware upgrades. For gamers, the largest "Three-Axis Gyroscope "! The first time I heard that this "Three-Axis Gyroscope" was a time ago, I occasionally found that Apple players were testing the positioning function of the iPod Touch. For details, see "location offset problem of different mobile devices ".It seems very novel-Because iPod touc

example a delegate to the accelerator, the program example for declaring an example is as follows: UIAccelerometer *accelerometer = [UIAccelerometer sharedAccelerometer]; You can set the update rate of the instance. You can use the following program to set the update rate, which indicates that the update is performed once every 30 seconds. accelerometer.delegate = self;accelerometer.updateInterval = 1.0f / 30.0f ; After setting the delegate, you m

This paper introduces the characteristic principle and application scenario of the-LIS3DH accelerometer sensor for wearable devices. ST's LIS3DH is widely used in smart wearable products such as smart hand loops and smart step shoes.LIS3DH has two ways of working, one of which is that it has built-in algorithms to handle common scenarios such as standstill detection, motion detection, screen flipping, weightlessness, position recognition, click and do