camera

How to deal with memory problem - MATLAB

I am getting 3 camera input to MATLAB with Infinite Trigger. But after minutes, cameras fill up my memory, and I have to restart MATLAB. How can I deal with this memory problem? ...

Windows Mobile camera capture issue with DirectShow

I wrote a C# application that uses DirectShow to allow users to take photos with the camera attached to a Windows Mobile 6 phone. The problem I spotted out is that the preview functionality stops working after a period of not using it. How could I determine what's causing this ? Is there a timeout in Windows registry that tells how mu...

WPF 3D Perspective camera question

I am working on a 3D flip control that can flip horizontally, vertically and can have any size and square or rectangular shape. While I have it working, I ran into a very odd issue with the perspective camera. When I create a MeshGeometry3D I scale to the proper ratio of the content. If the width > height, all is well. However, if he...

Optimizing an iphone app for 3G in landscape with opengl, camera, quartz

I have an iphone app that basically uses the camera, an opengl layer, and UIViews (some drawing with Quartz). It runs ok on 3GS, but on the 3G it is unusable. Particularly, when I press a UIButton, it literally takes sometimes 10 seconds to register the press. Shark doesn't do me much good because it crashes when I try to profile even...

Access camera in blackberry application

hi, i am developing an application for blackberry which will take snap from camera and post this image to server.Can someone provide code for me to how invoke camera and take picture and send it to server.? Thanks in advance ...

How do I extend mouse space in OpenGL windowed mode

How do I extend the distance the mouse can move in an OpenGL window? What I wish to achieve is an fps like interface where the cursor is hidden and camera rotations are not limited by the mouse having to remain inside the window boundaries. ...

Why are there 3 conflicting OpenCV camera calibration formulas?

I'm having a problem with OpenCV's various parameterization of coordinates used for camera calibration purposes. The problem is that three different sources of information on image distortion formulae apparently give three non-equivalent description of the parameters and equations involved: (1) In their book "Learning OpenCV…" Bradski ...

Adding pictures to the Gallery - Android

Hello, I have an activity that takes a photo with the camera, and then adds it to its proper folder (in this case /DCIM/Camera). But then when you exit the app and load up the Android gallery...it's not there. I was doing some playing around and noticed it only appears there when after restarting the phone. I'm not sure the reason behin...

Virtual camera/direct show filter for network stream

Hi guys, i'm working with Flash Live Encoder. It's using camera for streaming video. Support forum say's that i can create custom direct show filter and stream data that i need. I cann't understand how direct show filter will display in the source list of the live encoder. I've tryed to use some commercial virtual camera and it work's fi...

camera emulation in android

am trying to capture image using android emulator camera by using a pc web cam.i tried the code given here bt got error in running webcambroadcaster.JMF is installed properly and classpath s provided.in Jmstudio device is detected,bt still compilation says ""ünable to find suitable player"" can anyone help me?it s urgent... ...

Using Camera in the Android emulator

Hi, I wish to simulate camera in the android emulator using the webcam. Basically I need to only take photos with the camera in the emulator (live preview is not needed i.e if it makes it any easier) I followed the tutorial here which is the only one I could find that was close to my requirements But many of the libraries used in tha...

how to release android camera without surfaceDestroyed function?

hi guys i am working with android camera stuff.i am developing a software.i am taking photos and just after i took picture i wanna release the camera but i am having some problems.i am looking forward to hear your answers about how to solve it ...

Finding a simple object in a low-quality image

Hi, I want to do this thing in C# (or any other .NET language), not sure how: I have an image I captured from webcam and I want to find a specific simple object in it (let's say a red circle with a black square in it). The red circle can be a bit different from time to time (because of shadows) and the square might be also a bit brighter...

how to get series of pictures?

i have problems with this, recently i have also problem with just taking 1 photo... do you know how to solve it? any working code? i'm doing it like that: mCamera = Camera.open(); Log.e(TAG, "onCreate"); mCamera.takePicture(null, mPictureCallback, mPictureCallback); Camera.PictureCallback mPictureCallba...

How big is interval between taking pictures in Android phone?

I'm wondering how fast I can take pictures one after another withoud surprises from the phone (like fx: 'force close;) Does any of you know that time? I know that 500 milisec is safe time. When i experiment with 100, 200, 300 milisec there is error but who knows, maybe i do sth wrong. ...

access camera from uiwebview?

Is it possible to access iphone's camera from uiwebview? I know phonegap does it, but how to make it work without phonegap? Thanks. ...

How to draw an overlay on a SurfaceView used by Camera on Android?

I have a simple program that draws the preview of the Camera into a SurfaceView. What I'm trying to do is using the onPreviewFrame method, which is invoked each time a new frame is drawn into the SurfaceView, in order to execute the invalidate method which is supposed to invoke the onDraw method. In fact, the onDraw method is being invok...

How to capture data from camera NOT using DirectShow?

How to capture data from camera with out using DirectShow? (in C# on windows ) ...

calculate the distance between the place where I am taking photo and the object I am taking.

I can get the latitude and longitude where I am taking photo. I can also get the Exif information of the photo I took. I want to know how can I calculate the distance between the place I am taking photo and the object I am taking by above informations? give me some constructive opinions. thanks very much. ...

Easiest way to position camera in XNA?

Everytime I load my model into XNA, I can usually see it far off in the distance. When I change some parameters and make it zoom up close, 10/10 times it's rotated funny and I'm set with the task of rotating it. Is there any easy way to do it except by experimenting? Or am I exporting it wrong (using Blender)? Is there any value I should...