webcam

How to capture each frame of a USB webcam using VB.net?

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 ev...

Splitting video camera source so 2 applications can access, on Windows

I need to access a video camera simultaneously in 2 applications. I have found some solutions, such as WebcamSplitter and Splitcam, but I don't want an application - I want something that can be integrated into my application, and controlled via some sort of API or configuration file. Here's a usage scenario: Split video source name = ...

How to get web cam images in C#?

I'm working on online video conferencing project in C# and .Net4.0. I want a library or code which I can use for collecting web camera images per second in different form. I try this by using the AVICAP32, in which we send Messages for different purpose like copy or edit frames.but in this we have to pass a reference of picturebox while...

Creating an image from webcam every x miliseconds

Hello everyone, I am using c# to integrate with a web cam. I need to generate a snapshot image every x miliseconds and save it to file. I already have the code up and running to save to file on a button click event, however I wonder what am I supposed to do when taking snapshots in the background - Should this be multi threaded? I'm hone...

Webcam capture on web application

Hi. I need to take a picture from a webcam into a webapp (PHP5/JQuery/HTML5) but I cannot use Flash; Is there a light java applet or any alternative technology for this?. ...

.NET Webcam Video Capture

Possible Duplicate: Webcam usage in C# What Video Capturing Libraries do you know about in .NET that are simple and easy to use? ...

Python access webcam and audio input

Can a python script on my server access the webcam and audio input of a user as easily and as well as a Flash plugin can? ...

SendMessage videocapture consts

Hello, I am using a code sample to connect to a webcam, and don't really understand the meaning of the variables passed to the SendMessage method. SendMessage(DeviceHandle, WM_CAP_SET_SCALE, -1, 0) SendMessage(DeviceHandle, WM_CAP_SET_PREVIEW, -1, 0) What does the -1 mean? To scale/preview or not to scale/preview? I'd prefer that zer...

How do I detect what software is using the webcam on a Windows box (XP,Vista,7)

The idea is that I want to build a small app that detects if the webcam is being used and by what. I have thought about seeing who has use of the Twain.dll somehow (like the way process explorer knows) It's for a security style app that picks out weird webcam behaviour. Ideally I would use C# as it's my strong point, but I'm guessing...

VB.Net: Detect Webcam

How can I programmatically detect whether a webcam device is plugged in to the PC or not, return 'True' or 'False. ...

Webcam api error when accessed from ASP.NET Server-side code

I'm tring to use webcam api with asp.net and C#. I included all the library and references I needed for that. the original code I'm use was for windows application and I'm trying to convert it to asp.net web application. I have start capturing button when I click it, it should start capturing but it gives me an error. the error at thi...

Using WebCam images in an ASP.NET application

Greetings, Is there any way asp.net can access/stream web cam content without using flash or silverlight to access the web-cam? ...

How do I resolve an error with an iframe?

I have a page on my site that uses an iframe to show a webcam picture from one of those ddns sites that facilitates web access to webcams. It works fine in all browsers, but in IE 8 (I haven't tried other versions of IE yet), I get that annoying little exclamation mark in the lower left corner of the browser, and when I open it up it sa...

How to overlay 3d graphics on top of webcam feed live

How can I render 3d graphics on top of a live webcam feed? Visual Studio 2008 c++ Edit: I left the question vague because I do not care what libraries or frameworks are used. I don't care if its Direct3D or OpenGL, or even something else. To bring it the question to a specific point, I would like to render a flat shaded spinning c...

Display an webcam stream in PyQt4 using OpenCV Camera Capture

Hello, I am using this python script do display my webcam : from opencv.cv import * from opencv.highgui import * import sys cvNamedWindow("w1", CV_WINDOW_AUTOSIZE) camera_index = 0 capture = cvCreateCameraCapture(camera_index) def repeat(): global capture #declare as globals since we are assigning to them now global came...

How to get YUV video data stream from web cameras in C# NOT USING DIRECT SHOW?

What I need is raw camera data Stream of images\Frames in YUV format. I need to get tham using C#. And NOT USING DIRECT SHOW (if possible at all). I need a live stream not something like 1 frame per 5 seconds. If It will be mono compateble it would be grate but win only will be ok. I use .Net 3.5 but if needed I can swich to 4. I heard...

How to play video stream from WebCamera using Microsoft.DirectX.AudioVideoPlayback?

How to play video stream from WebCamera using Microsoft.DirectX.AudioVideoPlayback? in C++ or C# ...

How to get webcam video stream bytes in c++

I am targeting windows machines. I need to get access to the pointer to the byte array describing the individual streaming frames from an attached usb webcam. I saw the playcap directshow sample from the windows sdk, but I dont see how to get to raw data, frankly, I don't understand how the video actually gets to the window. Since I d...

How to get width and height of directshow webcam video stream

I found a bit of code that gets me access to the raw pixel data from my webcam. However I need to know the image width, height, pixel format and preferably the data stride(pitch, memory padding or whatever you want to call it) if its ever gonna be something other than the width * bytes per pixel #include <windows.h> #include <dshow.h> ...

How to use the callback method with a c++ directshow sample grabber

I have a sample grabber hooked into my directshow graph, based on this example http://msdn.microsoft.com/en-us/library/dd407288(VS.85).aspx the problem is that it uses one shot and buffers. I want to continuously grab samples, and i'd rather have a callback than i guess polling for the samples. How do use the SetCallback method? SetCa...