spyder calibration

At the beginning, I need to explain some knowledge about color space.The raw RGB is linear, and the SRGB value generated by camera is nonlinear value.So, the whole process of the color calibration is:1. Using Colorchecker to compute the gamma of the SRGB value.2. Do gamma correction (that would transform SRGB to linear RGB)3. Find the linear mapping matrix to transform linear RGB to true XYZ values.4. Transform XYZ to LAB. (The XYZ and LAB is camera i

=/dev/event0Export tslib_tseventtype=h3600Exporttslib_conffile=/usr/local/tslib/etc/ts.confExport Tslib_plugindir=/usr/local/tslib/lib/tsExport tslib_calibfile=/etc/pointercalExport tslib_plugindir= $TSLIB _root/lib/tsExport Tslib_consoledevice=noneExport tslib_fbdevice=/dev/fb0Export qws_keyboard= "Tty:/dev/tty1"if [-c/dev/event0]; ThenIf [-e/etc/pointercal-a!-s/etc/pointercal]; ThenRm/etc/pointercalFiFiExport qtdir=/opt/qt-4.8.4Export qpedir=/opt/qt-4.8.4Export path= $QTDIR/bin: $PATH#export l

1. Double hit Open Magictune software. 2. Click on "Color". 3. Click "Calibrate". 4. Click "Start". 5. In turn, drag the "White triangle" icon to the range of each step, the first four steps click "Next", the fifth step click "Application." 6. Enter the name of this calibration in the dialog box next to edit user name, such as "My Color Save" and click "Save". 7. Compare the pictures before and after the

laptop win7 system computer for battery calibration in BIOS The specific methods are as follows: 1, first in the Win7 system boot into the BIOS Setup Panel, and then switch to the "Power" tab. Then move the cursor over the Start Battery Calibration tab, and then press the "Enter" key to perform the action. 2, and then according to the above prompts, the notebook computer connected to the power sup

Geometric calibrations roughly include correcting vector layers based on vector points, calibrating raster layers based on vector points, and calibrating raster files based on raster files.The tool used for correction between vector points is spatial adjustment, and the grid correction uses the Georeferencing tool. Turn on edit mode before making corrections.References to several articles:1. Vector Registration Raster ImageryHttps://jingyan.baidu.com/article/d3b74d64e3c6231f77e609be.html2. Vecto

Raspberry Pi is not like the motherboard of the PC with a battery for the timing after the shutdown, each time the board starts to re-time, netizens generally provide the method is to use the Ntpdate network calibration, but the board is not even mobile network, because the mobile firewall will intercept the relevant access.For detailed installation and configuration of this calibration service, there are a

The "Calibrationdata" key value in the touchscreen is the check value, copy this value, and then open the Project.reg of the PB platformFile, add the following touch screen registration information, where "calibrationdata" = after the value is the above we copied the touch screen checksum value. [Hkey_local_machine\hardware\devicemap\touch]"Calibrationdata" = "1484,1168 584,536 568,1820 2356,1812 2356,488" Copyright NOTICE: This article for Bo Master original article, without Bo Master p

Definition: The checksum is an error correction field for the IP header. The checksum does not compute the encapsulated data, and UDP, TCP, and ICMP all have their own checksums. The Header checksum field contains a 16-bit twos complement and is computed by the packet sender. The recipient will re-perform the 16-bit twos complement and the calculation together with the original checksum. If no error occurs in the packet transmission, the result should be 16 bits all 1. Code:unsigned short csum (

#include 　　OPENCV Camera Calibration (parameter + correction), but cvfindchessboardcorners is not stable, must be marked version

of the pre-correction in ArcMap. Load the georeferencing (image Registration) tool, and on its toolbar, click on the "Add Control Point" button. Then add control points.Steps to add a control point:1. For example, if the image you want to register is downloaded from Google Earth, you can add a few iconic landmarks to Google Earth (preferably more than 8), 3, 42. Record the latitude and longitude when marking each iconic landmark. Because we chose "degrees and seconds" before, we would like to c

The part of the parameter resolution, modified according to its own storage form#include #include#include#includeusing namespaceStd;inlinevoidGetparams (Char*pathname, cvmat* intrinsics, Cvmat *Distortion_coeff) {FILE* IFS = fopen (PathName,"R"); FSCANF (IFS,"%f\t%f\n", (intrinsics->data.fl[0]), (intrinsics->data.fl[4])); FSCANF (IFS,"%f\t%f\n", intrinsics->data.fl[2], intrinsics->data.fl[5]); Intrinsics->data.fl[1] =0; Intrinsics->data.fl[3] =0; Intrinsics->data.fl[6] =0; Intrinsics->data.fl[7

In my original thinking, FX and FY, which was focus lenth of camera, is trivial. They play a role of just an actually non-sense part to the final output.Today I test orb-slam2 with my own video.I inherit the Kitti00-02.yaml config file. That's means, I use their FX and FY.It turns out traking module is not working correctly.Then I do another test. I changed Tum1.yaml to different FX and FY values to check whether it matters.Results is shocking. Tracking can be lost.Here is the screenshot.After c

Comprehensive Exercises:!--Check age --Struts2 Calibration Demo

exactly*/BufferedImage bufileinput = Imageio.read (fileInput);DataBuffer dafileinput = Bufileinput.getdata (). Getdatabuffer ();int sizefileinput = Dafileinput.getsize ();BufferedImage bufileoutput = Imageio.read (FileOutPut);DataBuffer dafileoutput = Bufileoutput.getdata (). Getdatabuffer ();int sizefileoutput = Dafileoutput.getsize ();Boolean Matchflag = true;if (sizefileinput = = sizefileoutput) {for (int j = 0; jif (Dafileinput.getelem (j)! = Dafileoutput.getelem (j)) {Matchflag = false;Bre

highest bit has a carry, then the low into 1.[2] In addition, first take the inverse and add the first and then take the inverse, the result is the same. So the implementation code is added first and then reversed.5. Implementation code:StaticInline uint16_t check_sum (Constuint16_t *buffer,intsize) {unsignedLongCksum =0; //16-bit for unit number addition while(size>1) {cksum+ = *buffer++; Size-=sizeof(uint16_t); } //length Odd case if(size) cksum+ = * ((unsignedChar*) (buffer); //Hig

switch the insert and overwrite modes.Start at this time.////////////////////////////After the screen reaches this step, the left and right operations are changed to up and down operations,Solution: Correct the values A, B, C, D, E, and F respectively.Try again ..Or not, the left and right are correct, and the up and down are reversed.Solution:The formula that reversely returns Y coordinates:YS '= 320-Ys = 320-(A * XD + B * YD + C)/sRe-calculate the values of A, B, and C.Now I click the calcula

office app, inside the guest management system to do the room management system and so on, we use a lot of all know that exchange comes with the conference room management is not quite in line with the use of Chinese users habits2 years from the online experience to see very successful to prevent the collision behavior, with the firewall's automatic blacklist, SA can catch a breathBut there are passwords forget the problem, account lockout and other regrets, the next no password verification ha

Cached saves and reads data from the database according to the PROTOBUF metadata mechanism.In order to simplify the complexity of server interaction, the logical server uses the PROTOBUF and cached protobuf, the data structure is exactly the same.Inconsistent, there will be an indeterminate error. For example, logical server with MSG1 serialized data, passed to cached, cached but with MSG2 to parse, reorganize, save to DB. The result is all messed up!Therefore, the logical server connection cach

Org.hibernate.validator.engine.ConstraintTree.validateConstraints (constrainttree.java:144) at Org.hibernate.validator.engine.ConstraintTree.validateComposingConstraints (constrainttree.java:233) at Org.hibernate.validator.engine.ConstraintTree.validateConstraints (constrainttree.java:128) at Org.hibernate.validator.engine.ConstraintTree.validateConstraints (constrainttree.java:117) at Org.hibernate.validator.metadata.MetAconstraint.validateconstraint (metaconstraint.java:84) at Org.hibernate.v

1. We first press "WIN" + "X" on the desktop and then pop up a Super menu. We click on the "Control Panel" in the Super Admin tool as shown in the following image.2. Then we found "tablet settings" in the control Panel as shown in the following image.3. Then in the pop-up interface we click the "Calibrate" button below "show", as shown in the following figure.4. Now will tell us how to operate, we are prompted to operate:5. Then we will pop-up prompts, we click "Yes" can be.6. After saving the d