Webcam Capture Program - Object Tracking
May 7, 2012
I am making a webcam capture program in vb.net to scan qr codes. I found some examples that show tracking a certain color, but that wont work because the qr codes have different colors. some are red, blue, purple, black, and green. I am using the touchless sdk to capture the video. How would I go about tracking the person's hand holding a 1"x1" cube? I am trying to reduce the "background noise" that the scanner has to try to read through.
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Dec 29, 2008
I would like to do a program to capture a picture from webcam and display it.
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Jun 21, 2010
How to use GDTwain control in VB.net
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Oct 11, 2007
I have swann webcam Mac IP cam network camera...its connected to the RJ-45 connector....I want to capture images after every 10 sec. from this and save it in to sql database..[URL]
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Mar 12, 2009
I'm currently working on a project which is basically Server-Client based. Client is standalone VB executable file and Server is web based.The program is supposed to use webcam as video capture device, stream video footages to server (on website - live feed) and allows users to manually save captured videos into their computer.Thats basically the brief description of my system. I'm starting off working with VB right now and website after I'm done with VB.I'm new to VB, this would be my 1st project on it. I've looked for available sources online and found several VB apps which lets me capture image file through my webcam. Also on MSDN forum, i found recommendations on using "DCAM Server" to stream videos on website but I'm still not sure of how to configure the settings to make it work properly, and of course, don't have a proper website for it to work with yet atm. Also realise I'll need to integrate some .dll files or activeX functions to use video capture function. I don't really know how to use these yet rite now.
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Nov 1, 2010
I Am Trying To Get A Webcam's Frames, I Can Get The Frames Succesfully But I Cannot Preview It.
I Mean, The Program Can Succesfully Record A Video To My Local Disk, But It Doesnt Preview On A Picturebox.
But This Isn't So Important, I Don't Know If I Can Change The Resolution Of That Captured Video?
I Mean, I Have An HD Camera, But It Doesnt Record On HD, It Just Records The Right Top 640x480 rectangle of screen. So I Mean It Doesnt Even Records Me, It Records My Back...
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May 1, 2012
I need to show video in a picturebox, and when a button is pressed, capture the frame. I am making a desktop qr reader. I have the qr reader completed and working. my issue is my camera now. I would prefer something that actually works, and doesn't have severe memory leak issues, and doesn't throw an exception after it's first or second use. Would AviCap32 or Direct Show be better for what I want? Which would capture the image fastest, without causing exceptions? I tried using an open source solution called webcam_capture.dll, and it worked at first, but now I am getting an exception that I dont know how to fix. I'm assuming this goes in vbGeneral, and not the Interop and Upgrade. Most examples I have seen, use interop, so I wasn't sure. I would prefer not to use WIA. I have attempted it, and it doesn't work quite right on my computer, and this application will be distributed.
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Feb 15, 2012
How i can; Get a image from webcam with a sub or Function. i dont want dll or anything just a sub or function.
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Sep 24, 2010
i'm currently doing an assignment which is based on vb.net and sql server. here i wanna capture an image and i wanna save that into a sql table named 'customer'. i have downloaded the code for capture the image from the webcam and sWhen i click the save button in that app, its showing to save the captured image in a
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Dim data As IDataObject
[code]....
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Mar 21, 2009
Now I do have code already I found online, but it is just using API's like I would in VB6. Is there any .Net code to find if web cam is available, and if so, just take a pic and save to a JPG.
Note, the API methods work however I can only get it to work if I paint it onto a form or picture box. I don't want any forms or picture boxes. I just want .Net code to grab a picture with the web cam and save to file.
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Jun 16, 2011
using directshow to capture image from webcam. In my winform application, there was a tabcontrol which contains two tabpages. Tabpage1 contains a picturebox which shows the video from webcam, tabpage2 contains a button to capture the image. My problem is when I pressed the button on tabpage2, my saved image file is empty which has no picture inside.
The following is my code for GetImage:
Public Sub GetImage(ByRef bmp As Image, ByRef pbCtrl As PictureBox)
' Get image from clipboard and convert it to a bitmap
Try
[code]....
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Sep 15, 2010
After a long while I started a project in VB.Net. I am making a security cam application for my own room. What I have done so far is capturing image from webcam (15 fps) to a imagebox and copying a still image from that imagebox to another in an intervall I have decided. Afterwards my code saves the image with a date and time as jpg. The code for capturing image I have found in this forum (iCam). My problem is (by the way I am an amateur programmer ) that the first imagebox (for realtime image capture) is not being showed (I dont want to see it). But if it is not active then all still images (saved as jpg) are all black. I think it is a drawing issue. I think imagebox is not being drawn (because it is not visible (actually the form is not visible)) and that is why still images are black. But I really don't know how to fix it? The class for capturing still images is very useful but only works with an imagebox.
(I really tried to understand the code. Especially the function, which copies a still image from 15 fps webcam output to a imagebox (which is used to save image as jpg file). But there are objects like: IntPtr, Hdc (getHdc, releaseHdc) and BitBlt. I really don't know anything about those objects.)
Code of iCam:
Option Explicit On
Option Strict On
Public Class iCam
#Region "Api/constants"
[CODE]...
I get realtime images with: iCam.initcam(me.picturebox1.handle.int32) and copy with: picturebox2.image= iCam.copyimage(picturebox1,New RectangleF(0, 0, Me.picturebox1.Width, Me.picturebox1.Height))
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Jun 21, 2010
I'm developing an application and it needs a facility to take photo of the customer using the webcam.
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Nov 20, 2011
webcam drivers were installed using its cd drivers.[code]after skipping the errors in compile (f5) the program works, how to cancel the errors? moreover, when the program is run via the .exe file in the bin folder no errors fire up
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Sep 14, 2010
I' am Use Notebook (Samsung R580) OS : Windows 7 Home Basic Sceen ..
As shown in the image the camera is black, but somehow the image Get Connected Profile is not .. There follows a look at the program's source code and would be happy if you tell me where the error
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May 20, 2009
I'm trying to capture an image from my webcam and save it as a .bmp file. the code i have works perfectly except for 1 issue i cant figure out no matter what I try the issue is that when i save the bitmap it only saves in 320x240 resolution even though I have set the resolution to 640x480 everywhere I could think of.
here is the (edited) code I currently have. some places I didn't know what to change so I put in 640,480 anyways to see what happened but that didnt make any difference and also didnt cause any errors so i left the changes there.
Const WM_CAP As Short = &H400S
Const WM_CAP_DRIVER_CONNECT As Integer = WM_CAP + 10
Const WM_CAP_DRIVER_DISCONNECT As Integer = WM_CAP + 11
Const WM_CAP_EDIT_COPY As Integer = WM_CAP + 30
[Code]......
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Aug 16, 2009
picturebox1.image = system.image.drawing.fromfile(x) x is the location where the webcam store the current image.if the code above would work what is x ?
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Mar 14, 2009
I'm currently working on a project which is basically Server-Client based.Client is standalone VB executable file and Server is web based.The program is supposed to use webcam as video capture device, stream video footages to server (on website - live feed) and allows users to manually save captured videos into their computer.Thats basically the brief description of my system. I'm starting off working with VB right now and website after I'm done with VB.
I'm new to VB, this would be my 1st project on it. I need help and guidance on how to start please, especially on video capturing functions.I've looked for available sources online and found several VB apps which lets me capture image file through my webcam. Also on MSDN forum, i found recommendations on using "DCAM Server" to stream videos on website but I'm still not sure of how to configure the settings to make it work properly, and of course, don't have a proper website for it to work with yet atm.Also realise I'll need to integrate some .dll files or activeX functions to use video capture function. I don't really know how to use these yet rite now.
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Aug 15, 2010
i can't work the two codes in the same program the volume meter : [URL]
and the image capture of : (the actual capture ,the webcam image display works) [URL]
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Aug 13, 2009
how do i capture an image with a webcam and save it in a picturebox?
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Jun 4, 2012
how to capture and save still image through webcam in vb 2010
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May 20, 2010
While I have got some leads from an older SO post and from this site, I haven't been able to figure out how to capture each frame of a web-cam.
What I would like to do is something like this capture a frame then do some image processing on it and display the output and then move on to the next frame.
Can I can access to web-cam frame events or is there any efficient way to achieve this?
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Feb 2, 2012
currently, im using a webcam in my thesis. one of my objective is to have a realtime camera that can record/capture a video at the same time can capture image. i dont know how to code it in vb.net.
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Dec 16, 2010
showing script for make a snapshot from an usb webcam?
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May 16, 2011
I need to capture a picture from webcam for a project... But there seems to be no easy code available... Also am not able to find any working code for it... saw a codeproject code, but couldnt get it to work..
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May 2, 2011
I tried to code using WIA, and it is working fine.But when I tried my codes under Win 7 OS, it failed to capture.It seems that it is only working on XP. I also tried some code sample found here. And still failed under win7.Is there any good link where I can get some info to work with regarding to web cam capture...I tried also Avicap.dll?
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Jan 8, 2010
I'm building .NET application that uses DirectX API for web camera device I'm using DirectShowNet Library .
i want to capture the image when user clicks the snapshot button available on webcam.and then dispaly the image in picture box.pls help me out iam stuck with this issue.
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Aug 17, 2011
[URL]
So like I said before, I have a webcam capture and inventory script which I put together from various sample code. It works great, but I need to add a preview pause/ to break apart the capture and the save functions.
Imports System.Runtime.InteropServices
Public Class Form1
Const WM_CAP As Short = &H400S
[Code].....
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May 3, 2012
I am making a webcam capture application, but when I run it, I get the "Object reference not set to an instance of an object" It shows no errors during debugging, Option strict is set to ON, but I have no clue where the error is, and how to fix it.
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Mar 19, 2009
I'm trying to creat a program that tracks the sales of five products all with different monetary values. I'm trying to display the total number of each product sold, a combined total of products sold, and the total sales value. So far I'm only outputing the value of one of each product, I think there is a problem with the loop somehow. [code]
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