Face Detection And Recognition Using Emgu, OpenCv and c# (Step By Step)

Source Code:
Face Detection And Recognition Using Emgu, OpenCv and c#
Learn How to use Emgu and OpenCV libraries.
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[@ryszardwozniak5638]

There is small mistake. The program can not read information that has been previously saved in "database". It is revealed by try/catch MessageBox despite existing files in the "Faces" folder. To fix this problem you should change "/Faces/Faces.txt" in 26:40 to $"/Faces/{FacesLoad}"

[@ukanainnocent1786]

adding that makes it work but it is still giving the same name to all trained faces

[@coderock5655]

Thank You! I will check it

[@coderock5655]

Try recognizing more then 5 6 faces

[@ukanainnocent1786]

I'm really grateful for your video and reply. please is it taking the same face up to 5 to 6 times or trying to recognise 6 different faces? thanks in advance i just need clarification

[@coderock5655]

Try to to recognize 6 different faces. Welcomee!

[@randomcreatorsind.3268]

I don't know how many of you guys tried it but it shows the same name for all the images. it doesn't identify the difference in the images so I can say it is face tracking but not recognition although it is nice exposure for newbies. Please correct me if I am wrong!

[@joseluisdeoliveirasantos9131]

Thank you! Step by step, easy. I just can say your post is very usefull. You, by the way, are a little bit slow codding... C# in Visual Studio IDE brings a new toolset and a simplified syntax that can help you a lot in this particular issue. Anyway, you did in a fast and clean way a sample code that is a basic start point to several more complex and unique projects. Again, thank you.

[@coderock5655]

Welcome! And Thank you for your comment

[@softmanagement9255]

Getting Error The type initializer for 'Emgu.CV.CvInvoke' threw an exception

[@catboy9377]

thanks. It was one of the 2 tutorials on emgucv in the whole internet that work :P

[@ahmedali-kl6fh]

Sir could u plz give me the code which work

[@catboy9377]

@@ahmedali-kl6fh this should work: using System.Linq; using System.Threading.Tasks; using System.Text; using System.Collections.Generic; using Emgu.CV; using Emgu.CV.Structure; using Emgu.Util; using System; using System.Windows.Forms; using System.IO; using System.Drawing; namespace facedetection_old_school { public partial class Form1 : Form { MCvFont font = new MCvFont(Emgu.CV.CvEnum.FONT.CV_FONT_HERSHEY_TRIPLEX,0.6d,0.6d); HaarCascade face = new HaarCascade(Application.StartupPath+ "/haarcascade_frontalface_default.xml"); Image trainedFace = null; List trainingImgs = new List(); List labels = new List(); List users = new List(); int count, numlables, t; string name, names = null; Capture cap; public Form1() { InitializeComponent(); try { string labelsinf = File.ReadAllText(Application.StartupPath+"/Faces/faces.txt"); string[] Labels = labelsinf.Split(','); numlables = Convert.ToInt16(labels[0]); count = numlables; string facesLoad; for (int i = 1; i < numlables+1; i++) { facesLoad = "face" + i + ".bmp"; trainingImgs.Add(new Image(Application.StartupPath + "/Faces/faces.txt")); labels.Add(Labels[i]); } } catch(Exception ex) { MessageBox.Show("no training data"); } } int ogCount; private void Form1_Load(object sender, EventArgs e) { ogCount = count; } void savedata() { if(!record) { return; } count += 1; trainedFace = trainedFace.Resize(100, 100, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC); trainingImgs.Add(trainedFace); labels.Add(textBox1.Text); } private void button1_Click(object sender, EventArgs e) { File.WriteAllText(Application.StartupPath + "/Faces/faces.txt", trainingImgs.ToArray().Length.ToString()+","); Image[] trainingImages = trainingImgs.ToArray(); for (int i = 0; i < trainingImages.Length; i++) { trainingImages[i].Save(Application.StartupPath + "/Faces/face" + i + ".bmp"); File.AppendAllText(Application.StartupPath + "/Faces/faces.txt", labels.ToArray()[i] + ","); } } bool record; private void radioButton1_CheckedChanged(object sender, EventArgs e) { } private void recordrn_CheckedChanged(object sender, EventArgs e) { if (record) { record = false; } else { record = true; } } private void start_Click(object sender, EventArgs e) { cap = new Capture(); Application.Idle += frameGrabber; } private void frameGrabber(object sender, EventArgs e) { Image frame = cap.QueryFrame().Resize(320, 240, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC); Image grayFace = frame.Convert(); MCvAvgComp[][] rectangles = grayFace.DetectHaarCascade(face, 1.2,10,Emgu.CV.CvEnum.HAAR_DETECTION_TYPE.DO_CANNY_PRUNING, new System.Drawing.Size(20,20)); foreach(MCvAvgComp rectangle in rectangles[0]) { Image result= frame.Copy(rectangle.rect).Convert().Resize(100,100, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC); frame.Draw(rectangle.rect, new Bgr(System.Drawing.Color.Green), 3); found.Image = result; trainedFace = result; savedata(); if (trainingImgs.ToArray().Length != 0) { MCvTermCriteria trermCriterias = new MCvTermCriteria(count,0.001); EigenObjectRecognizer recognizer = new EigenObjectRecognizer(trainingImgs.ToArray(),labels.ToArray(), 1500, ref trermCriterias); name = recognizer.Recognize(result); frame.Draw(name, ref font, new Point(rectangle.rect.X -2, rectangle.rect.Y-2), new Bgr(120, 55, 10)); } } viewer.Image = frame; } private void viewer_Click(object sender, EventArgs e) { } } }

[@coderock5655]

Done! Don't Forget to subscribe

[@ahmedali-kl6fh]

@@coderock5655 sir i have done it. Thank u so much for your reply.

[@connect9023]

sir can please can you give me the code and thank you

[@sandeepsandy7]

Good, but if another face detect then same name only will display

[@coderidetv969]

Got an exception: An unhandled exception of type 'System.TypeInitializationException' occured in Emgu.CV.dll The type initializer for 'Emgu.CV.CvcInvoke' threw an exception. In Code: MCVFont font = new MCVFont.....

[@chriswu6517]

you need to install Emgu.CV.runtime.{windows} if you r using windows os

[@sanchidhingra7641]

I have added all the DLL files from emguCV bin but it shows an error on haarcascade !! What can I do? Pls help

[@rashidabbasi6035]

i am waiting for your response ....

[@tranhau2074]

Hi Rizk, When I click Button "Start Detection And Recognition" again, It's show error: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt" at command line "Frame = camera.QueryFrame().Resize(480, 320, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);" in FrameProcedure(object sender, EventArgs e) Please help me!

[@istonedu]

same problem

[@aslarrecomienda6261]

Hello, I thought your video was good but I have a question, if you try to recognize another person already having Ronaldo in the base, doesn't it show you the same name?

[@yajgaming5207]

The program cannot detect the face that been saved, can you please tell me what to change? thanks

[@hammadabid8251]

hi same problem here what can i do?

[@airaortiz1490]

same problem, how can i solve this?

[@HaisanKing]

Bro I installed the Emgu .Cv and but can’t install the Open. Cv why what I can to do pls sent your source code and pls explain to me

[@abdalarmden7382]

how using barcode Detection And Recognition Using Emgu, OpenCv and c# (Step By Step)

[@kaveeshkumar182]

I am having System.IndexOutOfRangeException. please someone can help me?

[@strictway2907]

If you can write perfectly it means you can speak fluently. Please Speak rather than write. Just try it, it's pretty easy.

[@nikita4828]

Hello, I have a problem, .Resize() does not exist when I tried to call him, what should I do?

[@sadiahmad2335]

sir i faced a error when i execute my program it show black imagebox.

[@den_boey501]

have that to mate

[@rickifernandohutagaol7019]

Thanks you,but can i tell me how to save the image to local folder?

[@MuchamadDFadilah]

it's work if we running in .NET web base?

[@alkawn2223]

why when you save a first person , the second person will have the same name

[@bukzzmusic]

Its not in same name he registered her name with 4 zero another name is with 2 zero :D

[@b-laggersvlog2182]

same problem. did you already solved this problem?

[@egeincim2404]

Capture camera; I'm getting an error, please help

[@hieuha6245]

if I put this line "MCvAvgComp[][] facesDetectedNow = GrayFace.DetectHaarCascade(faceDetected, 1.2, 10, Emgu.CV.CvEnum.HAAR_DETECTION_TYPE.DO_CANNY_PRUNING, new Size(20, 20));" into FrameProcedure, my app get lagging, please tell me why?

[@hieupham9964]

I have run samecode like your project but show error : "ERROR: SampleCB() - buffer sizes do not match".I am using Dell laptop. How can I fix this

[@The_Sifter]

use external usb camera and disable Integrated Webcam from device driver and antivirus if you use

[@user-qr5gn2yz6y]

Not working.... Cannot Implicity convert type'Emgu.CV.Image' to 'System.Drawing.Image'. it is refering toLine 88 on your program

[@feldopz]

Hello some source code for the project sir🙏🙏

[@RASHID917]

same name for all faces... doesnt work

[@marceloxsweet1358]

Open this file... Emgu.CV.UI.dll... but... you don't open the file, and cancel OpenDialog.. lol..

[@hibaejaz3282]

can you please send me source code of this video..its very helpful

[@coderock5655]

Done! Don't Forget to subscribe

[@technoinfo7981]

I have an error in Labels.Add sir how I can solve that?

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@Ivan_sev]

Thanks a lot for the code. But I have a problem. If I add 1000 users to the program, then if I restart the program, then it does not identify anyone. What is the problem???

[@ThanhTran-gm6cy]

I imported EmguCv by Nuget Packet and it installed the latest version (4.2.0). I cannot create "eigenobjectrecognizer", so, is there any way to help me solve this problem? thank u!

[@ludenu2]

Is it my phone or the video is mute?

[@georgealbo]

'Unable to load DLL 'opencv_imgproc220': The specified module could not be found. (Exception from HRESULT: 0x8007007E)' i got this error any explanation for this in minute 12:17 when running the code

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@muhammadarsalan3480]

nice work, but it is nice only for the first time running, after closing and restarting app it is not recognizing the face previously added.

[@johndoe3704]

Its not facial recognition when every face is the same

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@charliee9499]

I know this is a video tutorial for EMGU but I would recommend you show how to reference the lib properly. You shouldn't have to manually dump dlls in the debug folder ever! Always reference through visual studio so you solution/project clean doesn't remove everything. This is very bad practice my friend!

[@musiclike3055]

Error 2 Cannot implicitly convert type 'Emgu.CV.Image' to 'System.Drawing.Image' E:\C# App\Base\Phan Mem Nhan Dien Khuon Mat\Phan Mem Nhan Dien Khuon Mat\Phan Mem Nhan Dien Khuon Mat\Form1.cs 83 31 Phan Mem Nhan Dien Khuon Mat

[@paoloroncalli5192]

Hello, I'm triied of Python and would try a language that I'm more familiar with, can you please send the source code ? Thanks tor your job

[@deva6603]

It is not recongnizing the image which have been saved in a database can anyone plz help

[@den_boey501]

Hello Sir Thank you for this tutorial. But I have a blackbox do you know the problem? Thank you in advance

[@b-laggersvlog2182]

Hello how can I recognize unknown faces that is not registered yet? thank you

[@teranceedmonds9026]

thank you it was very helpful....how can i get the name of the detected face to a label or a textbox?

[@zrjcoding]

i dont found any libs in Debug folder :/

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@callmetoms]

Would have been a hundred times better if you narrated instead of typing all your instructions. Thanks.

[@exia0032]

Im getting a buffer error. Pls can someone help?? Or please send your copy of it to my email

[@kickart7517]

im getting a black screen in the imagebox how do i fix this, im encountering this bug when using this algorithm that saves names into txt files. please help me

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@AswinCandra]

Can I save that face's information into SQL Server database? If it's possible, which part of the code that can I modify? Thankyou before.

[@atlaskor8130]

the lack of audio and the use of notepad ruined this for me...

[@keyboardwarrior2418]

Why don't you just use your voice instead of notepad?

[@Ajay2012100]

error show through run code 'Unable to load DLL 'cvextern': The specified module could not be found. (Exception from HRESULT: 0x8007007E)'

[@haseentaj4810]

even i am getting this error.@Rizk Please Help

[@hibasaflo5910]

Gooood and beutifull can you give me source code and CV Documents

[@tamaglory8157]

Please can you foward the source code?

[@coderock5655]

Please find the source code here: channel-ada01.web.app/

[@theferdinantsetiawan]

how to know between real face and fake face with this project ?

[@b-laggersvlog2182]

How can I recognized unregistered faces? thank you

[@revajeeva9707]

Exception thrown: 'System.IO.FileNotFoundException' in mscorlib.dll ERROR: SampleCB() - buffer sizes do not match ERROR: SampleCB() - buffer sizes do not match ERROR: SampleCB() - buffer sizes do not match am getting this error on this program.and also am not get to detect the face it showing as black screen.

[@akileshprayagsing6258]

were you able to solve the problem?

[@yless7174]

which method using for this facial recognition?

[@niccolopaganini6512]

Im having problems loading the already saved images in the last process

[@mrifkiadrian2786]

form1 does not contain a definiton for 'start_click' and no extension method 'start_click' accepting a first argument of type 'form1' could be found 9are you missing a reference?) anyone can help with these problem ? it's when i start to run the first trying in the video

[@dylanmuscat]

Name the button start

[@notamejackstone]

hey man, thank you so much for this. Its a great tutorial, and it worked when i tried it :D very grateful for this

[@kameigaipuilan4546]

hey bro. did u solve that when you close the program did the project detect the same face which you previously save.

[@dylanmuscat]

@@kameigaipuilan4546 There is small mistake. The program can not read information that has been previously saved in "database". It is revealed by try/catch MessageBox despite existing files in the "Faces" folder. To fix this problem you should change "/Faces/Faces.txt" in 26:40 to $"/Faces/{FacesLoad}"

[@jobovitch9277]

How do you write the code of this statement sir ? if (Face Detector = no Face detected) { } or if (the program detects a face but didnt match in training images) { }

[@tomgonzales1855]

good day sir. i just want to ask what is the problem in WriteAllText. error missing directive or an assembly reference. but in tutorial no assembly reference you add. tnx for response.

[@kennethdingga5087]

sir can you help me in my system ?? same as your video..

[@zohaibabbas4186]

this is just for save a pic... how to check our pics library..??

[@theodorenormangeda323]

Nice sir! i will be needing this soon. Could you please send me a copy of your source code if possible? Thank you!

[@johnny_flag]

Thanks for sharing this amazing video. Am getting an error on "cameraBox.Image = Frame" it says Cannot implicitly convert type Emgu.CV.image to System. Drawing. Image. Do you know how i can fix it?

[@ereconenterprise7991]

The panel that shows the webcam has to be an Emgu Imagebox and not the usual pictureBox. Hope this helps.

[@AlbertoBaessobAesso]

Hi @Rizk Mawad how can I close the camera once it start to collect images?

[@coderock5655]

Try Capture.dispose() or capture.pause()

[@AlbertoBaessobAesso]

Rizk Mawad thanks i used Application.Idle -= FrameProcedure and camera.dispose()

[@adebradfani5303]

Hi, can u send m the source code.

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@alvincuminlab8795]

im hhoping that you will send me the codes,,,,,, thank u very much

[@NasreenUsama]

which algorithm used in the program, please?

[@rentit21]

Please put link to the code on your video here. thx.

[@xhdwnx]

how can i contact u sir i got so many question about ur code. thanks:)

[@rodolfodesalisajr.3208]

Sir may i barrow the code please thanks i will use it in my present project thank you :)

[@filippodonofrio5867]

Hi...good job.....can you report emgu and openCV versions applied to your project pls?

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@TheIngmonica]

thank you for the project but iam experiencing error An unhandled exception of type 'System.TypeInitializationException' occurred in Emgu.CV.dll and it is pointing the below line faceDetected = new HaarCascade("E:\\Face_Detection_recog\\FDetect-1\\FaceDetectionandRecognition\\FaceDetectionandRecognition\\haarcascade_frontalface_default.xml");

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@skillscraftfreelancing627]

Very nice job broo ❤❤❤thanks for sucha great videi

[@hieuha6245]

Hi Rizk Mawad , How did you connect to camera? did you use the front camera on your laptop? how could it be done if I run the program on a desktop with an IP camera?

[@dylanmuscat]

Set that camera to your default camera on windows

[@kadirustasarac5812]

How do you write the code of this statement sir ? if (Face Detector = no Face detected) { } or if (the program detects a face but didnt match in training images) { } pls help

[@Insaneshadow69]

Hat Kid what do you want to do with that information? Whats logic behind that if statement, do you want to save “found” one as new one or you want to go back and scan again? You have to be more specific.

[@jonathandennerly7472]

Thanks for the great guide! First step completed for making my face following camera.

[@10xMotivationals]

Hello, this is well appreciated. I'd appreciate a copy of your source code if possible. Thanks in advance

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@venkatramana9359]

Amazing work!!

[@mahdi3319]

Please, what algorithm do you use?

[@GugahNugraha]

how to read the training images from database?

[@elitefdc2171]

is it possible to save trained images to remote server ?

[@binaebldavidbufumoh6519]

Thanks for this video, but i wanna know how to connect it to a database

[@ashrafalmashhari5148]

if possible i can test with ip camera please help

[@rosettegonzalez5668]

Can you give me source code? Thank you for this tutorial!

[@coderock5655]

Source Code Here: channel-ada01.web.app/

[@youcefazoug1982]

Hi can you give me the source code please

[@vijaybhardwaj9238]

Hi Rizak, You can write a read vehicle number plate

[@FouziaAdjailia]

how did u make those Rounded Corners ? plz

[@shivam15711]

Which algorithm did you use in this code

[@ZombieNW]

I tried testing it but it BSOD to make sure it was that I tried it again and it crashed... again.

[@coderock5655]

Done! Don't Forget to subscribe

[@luizgoka]

The webcam starts but the image is black. Do you know what I need to do? Thanks for the tutorial

[@marciobulzani7808]

Same problem here, u fix this?

[@khalidosama4109]

@@marciobulzani7808 did u fix it ?

[@irfanchandia1112baloch]

Hallo respected sir,image save in txt file but when i running agin show dialgue box " nothing indatabase".Help me to solve this problem

[@alexendrenumerocinq5786]

change "/Faces/Faces.txt" in 26:40 to $"/Faces/{FacesLoad}

[@kameigaipuilan4546]

still not working@@alexendrenumerocinq5786

[@ayitsalex2893]

I get the nothing in the database error when I start the program

[@Terron_]

Your project is amazing, neverthless when i try to execute I receive the mesgae from the try-catch method

[@Terron_]

can you send me your code lease, [e-mail] Or somebody can help me?

[@DAFFANAUFALSNET]

this is what i want , and this very useful for me for learn CV thank you

[@yusuf8424]

Thanks for such explanatory information

[@createit2002]

Your vedio helped me a lot. In my project. Thank you so much

[@黃奕華-r2c]

Thank you! nice step-by-step tutorial! Could you send me the source code? Thanks!

[@coderock5655]

Source Code Here: channel-ada01.web.app/