Currently, the calibration data of ACC, gyro, and PS sensor is stored in NVRAM and added to NVRAM binregion. After the factory settings are restored, sensor calibration data recovery.
However, the sensor data in NVRAM binregion must be calibrated and saved on the production
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
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
the magnetic data is provided by the E-compass sensor ).
The Electronic Compass sensor also provides the following direction sensor data.
The direction sensor (O-sensor) returns the angle data of three axes. The unit of the direction data is angle.
To obtain accurate angle
sensoreventlistener to monitor changes in sensor values.
(1) Sensormanager class
The instance used to create the sensor service. This class provides a number of methods for accessing and enumerating sensors, registering and unregistering sensor listeners. It also provides constants related to sensor accuracy, scanni
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
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
Http://bbs.esrichina-bj.cn/ESRI/thread-58227-1-1.html
In my initial Remote Sensing Study, I could not tell the differences and relationships between sensor calibration, radiation calibration, radiation correction, and atmospheric correction. In addition, different terms are interpreted differently in different documents. For example:
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
Linear Acceleration Sensor
The linear accelerometer uses a three-dimensional vector to provide the acceleration of each coordinate axis in the device coordinate system, but does not include gravity. The following code shows how to obtain the default linear acceleration sensor instance:
Private sensormanager msensormanager;
Private sensor msensor;
...
Msensormanag
Android acceleration Sensor G-sensor, androidg-Sensor
Sensor. TYPE_ACCELEROMETER
Values [0]: x-axis AccelerationValues [1]: acceleration in y-axis directionValues [2]: acceleration in the z-axis direction
The x, y, and z directions are defined as the coordinates of the reference system at the bottom right of
An hp tx2000 notebook with built-in wacom tablet and touch screen, installed with ubuntu11, requires screen calibration.
I checked several kinds of information and finally found or the official website of the http://sourceforge.net/apps/mediawiki/linuxwacom/index.php? Title = Calibration.
An xinput_calibrator software is required to conveniently provide four required
data of three axes. The unit of the direction data is angle.
To obtain accurate angle data, E-compass needs to obtain G-sensor data,
The O-sensor data is calculated and produced. Otherwise, only the horizontal angle can be obtained.
The direction sensor provides three data types: azimuth, pitch, and roll.
Azimuth: returns the angle between the magnetic pole and
correction methods.
(1) Ortho correction without control point
Main Menu →map→orthorectification→quickbird→orthorectify QuickBird
(2) Positive shot correction with control point
Main Menu →map→orthorectification→quickbird→orthorectify QuickBird with Ground Control
(3) Positive injection calibration Process tool
Toolbox →geometric Correction→orthorectification→rpc orthorectification Wrokflow
Third, image registration
1. Concept
2. Methods
(1) georefer
in the laboratory or engineering, we often need to calculate the two-dimensional image coordinates of the captured image to compute three-dimensional coordinates. As shown, we have such a picture. We need to calculate the three-dimensional position of the object and the manipulator so that the manipulator can grasp the object precisely.We use the Zhang Zhengyu calibration method to calibrate the internal and external parameters and calculate the corre
I have benefited from this blog from Daniel:
http://blog.csdn.net/sunanger_wang/article/details/7744025
http://www.opencv.org.cn/forum.php?mod=viewthreadtid=12963
http://blog.csdn.net/scyscyao/article/details/5562024
http://blog.csdn.net/chenyusiyuan/article/details/5967291
The last three consecutive articles were introduced in detail, very good.
Because there are no answers to some of the questions below, those are details, but you know that sometimes it's a little bit of an hour to get stuck.
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