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  • Monitor is flashing through camera but not in the naked eye

    - by odyodyodys
    Two monitors: Samsung T23C350 - Samsung 2243NW Lets call the first A and the other B. A is a LED monitor with a 2ms response time (in specs) with a native resolution of 1920*1080@60Hz B is an older not-led one with 5ms response in specs with a resolution of 1680*1050@60Hz In the attached images and video you'll see that A (on the LEFT) is flickering but this is not visible to the naked eye. I took some pictures and videos with a camera and a mobile phone. This is also happening to all digital camcorders I've tested. A has a setting response time with values normal, fast, fastest. No matter the setting, the effect is the same. A on the left and B on the right. You can see the flickering, although both are @60Hz A video where you can see both monitors. A is always the left monitor. Another video where you can see what my digital camera sees. Another thing is that I managed to get a picture where the left monitor is completely black whilst the right one is displaying fine. This proves that the monitor is continuously flashing. My question is: Is this normal behavior and what is causing it? Am I affected by this fast flickering? I am using this as my primary monitor and as a programmer I have to keep my eyes on it for hours.

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  • My 3D object (opengl es) is disappearing behind the iPhone camera view

    - by KLC
    I have an augmented reality iPhone app that I am converting from Core Animation to OpenGL ES 1.1. I have added code that has been modified from the Apple OpenGL template. My problem is that my 3D object , when translating along the negative Z-axis (away from the user), appears to disappear into the camera view, until its completely gone. I have experimented with several solutions, but to no avail. What I have determined: Using the 3D icosahedron from Jeff Lamarche's blog here, the object starts it at 0,0,0 and then translates with decreasing z coordinates. By the time the z value reaches -2.0f, the object is gone. It appears as if it is disappearing behind the camera view. This is how I set my frustrum & viewport (unchanged from Apple's code) glMatrixMode(GL_PROJECTION); size = zNear * tanf(DEGREES_TO_RADIANS(fieldOfView) / 2.0); //Grab the size of the screen CGRect rect = self.bounds; glFrustumf(-size, size, -size / (rect.size.width / rect.size.height), size / (rect.size.width / rect.size.height), zNear, zFar); glViewport(0, 0, rect.size.width, rect.size.height); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); What I have tried: The camera view is the main view and several other views are added to it as subviews, including the openGLView. I have commented those views out for test purposes. I have applied CATransforms to move the openGLView in the z direction -500 and +500, and done the same to the camera view. I have also changed the zFar in the above code to 1.0f, and it still disappears at z position of -2.0, which doesn't make sense (shouldn't it disappear at z=1.0?) My experimentation has got me more confused than when I started ( which usually means I am missing a key piece, but I can't figure out what). Thanks for your help.

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  • Setting White balance and Exposure mode for iphone camera + enum default

    - by Spectravideo328
    I am using the back camera of an iphone4 and doing the standard and lengthy process of creating an AVCaptureSession and adding to it an AVCaptureDevice. Before attaching the AvCaptureDeviceInput of that camera to the session, I am testing my understanding of white balance and exposure, so I am trying this: [self.theCaptureDevice lockForConfiguration:nil]; [self.theCaptureDevice setWhiteBalanceMode:AVCaptureWhiteBalanceModeLocked]; [self.theCaptureDevice setExposureMode:AVCaptureExposureModeContinuousAutoExposure]; [self.theCaptureDevice unlockForConfiguration]; 1- Given that the various options for white balance mode are in an enum, I would have thought that the default is always zero since the enum Typedef variable was never assigned a value. I am finding out, if I breakpoint and po the values in the debugger, that the default white balance mode is actually set to 2. Unfortunately, the header files of AVCaptureDevice does not say what the default are for the different camera setting. 2- This might sound silly, but can I assume that once I stop the app, that all settings for whitebalance, exposure mode, will go back to their default. So that if I start another app right after, the camera device is not somehow stuck on those "hardware settings".

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  • 3D coordinate of 2D point given camera and view plane

    - by Myx
    I wish to generate rays from the camera through the viewing plane. In order to do this, I need my camera position ("eye"), the up, right, and towards vectors (where towards is the vector from the camera in the direction of the object that the camera is looking at) and P, the point on the viewing plane. Once I have these, the ray that's generated is: ray = camera_eye + t*(P-camera_eye); where t is the distance along the ray (assume t = 1 for now). My question is, how do I obtain the 3D coordinates of point P given that it is located at position (i,j) on the viewing plane? Assume that the upper left and lower right corners of the viewing plane are given. NOTE: The viewing plane is not actually a plane in the sense that it doesn't extend infinitely in all directions. Rather, one may think of this plane as a widthxheight image. In the x direction, the range is 0--width and in the y direction the range is 0--height. I wish to find the 3D coordinate of the (i,j)th element, 0

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  • Project management with bug tracking integrated

    - by guytom
    Hi, Can someone recommend a hosted solution that answers the following requirements (I have seen other questions but none with these specific requests): Project management with tasks, wiki, milestones Bug tracking integrated Collaborative - suitable for working with external developers Subversion integration I know Jira but it seems to be too complex and lacks on the collaboration Thanks

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  • Need an open source php based forum to be integrated into my custom made cms

    - by Ali
    Hi guys, I've built a simple membership based website for a client - the client would like a forum integrated such that whenever a user registers on the membership site a corresponding account is created on the forums end as well etc. I checked out simple machines forums and phpBB - however I'mn not sure as to how to get this implemented. A push in the right direction would be a great help... or is there any other forum that can be easily used.

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  • jquery show/hide integrated with toggle/accordion effect

    - by mark
    I have a show/hide toggle working well in multiple instances (thanks to help here - search for 'jquery toggle to work in multiple instances'). I want to integrate it into an expanding menu / accordion style for the main categories. I have a script and it works on its own but I can't get it to work integrated with the show/hide. Any help greatly appreciated. The working show/hide: http://pastebin.me/c69869d7a80fdb439ca16304b821c146 the expanding menu script I want to integrate: http://pastebin.me/03b685f586fef84193b5fd72e815255d

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  • iis7 integrated mode asp.net 4.0 forms authentication problem using IE8

    - by FiveTools
    Anyone experience any issues with IIS7, integrated mode forms authentication while using IE8? I have a website with a login form, once logged in, any postback causes the user to be logged out. This doesn't even happen consistently, sometimes I can login and not experience this issue, other times it happens instantly. I can not replicate the problem in any other browser and I cannot replicate on my development machine running / debugging vs2010.

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  • What's the "Find Result" Control Visual Studio Integrated?

    - by Nano HE
    Hi, I am developing a simple Windows Application in C# and Visual Studio 2005. I need a search result control - just like visual studio integrated by itself. After I double click each line to trigger the individual event. I tried multi-line textBox Control, but whole the box can only support one click event. thank you.

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  • UIGraphicsGetImageFromCurrentImageContext gives poor quality / low resolution image, how do I get be

    - by user157733
    Ok so I am taking a screen shot of a photo I took with my camera on the iPhone. I put the camera photo into UIImageView and grab a screenshot of it using this sort of code (this is from http://www.skylarcantu.com/blog/2009/10/16/saving-a-view-as-an-image/)... - (void)takeScreenshot { UIWindow *theScreen = [[UIApplication sharedApplication].windows objectAtIndex:0]; UIGraphicsBeginImageContext(theScreen.frame.size); [[theScreen layer] renderInContext:UIGraphicsGetCurrentContext()]; UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); [self doSomethingWith:screenshot]; } I have it working as I want but the image quality of the screenshot is much worse than the image I take with my camera. Is there a way to overcome this? I guess it is because this takes a screenshot which captures the resolution of the iPhone screen rather than the resolution of the camera - maybe?! Any suggestions would be great :-)

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  • Background problem of opengl 3d object over iphone camera view

    - by user292127
    Hi, I'm loading opengl 3d objects over the iphone camera view. When opengl view is loaded it's loading with a opengl 3d object with black background. The black background color will block the camera view.I just want to clear background color of opengl view so that I could load only the 3d object to the camera view. I had tried glclearcolor(1.0,1.0,1.0,0.0); but no change to background color. I had also tried to clear background color opengl view using [glview setbackgroundColor:[UIColor clearColor]];. No change in back ground color. Can any one help me with this stuff ? I'm new to opengl. Thanks in advance

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  • close camera application in blackberry

    - by user324884
    I need to close camera when a file is taken from camera. I invoke camera by Invoke method and added FileJournalListener and then use Inject.post. But it si working fine in simulator and but not working in actual device. any Idea. ....... case FileSystemJournalEntry.FILE_ADDED: filepath=path; EventInjector.KeyEvent inject = new EventInjector.KeyEvent(EventInjector.KeyEvent.KEY_DOWN,Characters.ESCAPE, 50); inject.post(); inject.post(); ............

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  • Reading Images only from Camera

    - by Ankit
    I wanted to read images only from the Camera folder of the device. Since the folder might be different for different devices, how can I write a simple application for it). So far I have written the following code, which does read from Camera folder, but it also reads from other places on sdcard as well. Cursor childCursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, MediaStore.Images.ImageColumns._ID, null); do { ImageView image = new ImageView(); image.setImageURI(Uri.withAppendedPath(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, ""+ childCursor.getString( childCursor.getColumnIndex( MediaStore.Images.ImageColumns._ID ))); <some other code> } while (childCursor.moveToNext()); How can I create a generic app and filter on Camera Images before displaying. Any help is appreciated.

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  • AS3 Camera denied if loaded in a parent SWF

    - by teepusink
    Hi, I have a child SWF file that has the Camera functionality. It works fine if I run the child SWF by itself. However, when I load the child SWF into a parent SWF, the Camera functionality does not work. Doing some tracing it says that Camera access is denied. That happens without me even clicking on the deny button and in fact the usual security popup does not even show up. I have added import flash.system.Security; flash.system.Security.allowDomain("*"); to both parent and child SWF. What am I missing? It's Flash 10 player. Thank you, Tee

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  • 3D Camera looking at arbitrary point, but never rolling to do so

    - by Nektarios
    (In C#/XNA 4.0) I have Vector3 cameraPosition, Vector3 targetPosition I want to have my camera look at the target, always 'facing' it, but never rolling So roll always is neutral, to view the target the camera always either adjusts pitch or yaw I've tried countless combinations of methods and information I find here and on the web but I haven't found anything that works properly. I think my issue may be my 'Up' vector (which I've tried .Up, 1,0,0, 0,1,0, 0,0,1) When I move my camera I do: CameraPosition += moveSpeed * vectorToAdd; UpdateViewMatrix(); UpdateViewMatrix() is.. well, I've tried everything I have seen. At most simple... View = Matrix.CreateLookAt(CameraPosition, targetPosition, upVector); Where upVector has been Vector3.Up, 1, 0, 0; 0, 1, 0; 0, 0, 1, or other more 'proper' attempts to get my actual up vector. This sounds like it's probably my problem.. This should be dead simple, help!

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  • OpenCv not initializing usb camera

    - by brainbarshan
    I am trying to capture video from usb camera using OpenCv. #include <highgui.h> #include <iostream> using namespace std; using namespace cv ; int main() { VideoCapture cap (-1); if(!cap.isOpened()) cout << "Cam initialize failed" ; else cout << "Cam initialized" ; return 0; } It is failing to initialize the camera. cap.isOpened() is returning zero. The same program, with same version of OpenCv and same usb camera, is correctly running in my friend's machine. I am running fedora 16. I did some searching in Google and Stack Overflow. But no useful help. Any idea ?

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  • iPhone using Camera causes array to be unloaded

    - by Aaron Dale
    I have an array of images that I'm displaying in a UITableView. When choosing images from the library using the UIImagePicker, everything is totally fine and I can add a lot of images to the array. As soon as I add an image from the camera using the Picker I receive a memory warning and my array of images is ditched. Coming back from the camera picker, the table view is empty. The UIImagePicker when using the camera as the source generates a memory warning before I have a chance to resize the image.

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  • Why do the usable sizes differ

    - by Raigex
    Again, dont really know how to phrase the question so I will explain. I have a video recorder application. I open my camera with cameraRecorder = Camera.open(1); //(this is the front facing camera) And get the camera parameters and all supported preview sizes CameraParameters tmpParams = cameraRecorder.getParameters(); List<Camera.Size> tmpList = tmpParams.getSupportedPreviewSizes(); one of the preview sizes on the Galaxy Tab 10.1 running ICS (4.0.4) is 800x600 but when I try to set the Video size in my media Player mediaRecorder.setVideoSize(800,600); I get this error: 12-19 17:27:55.035: E/CameraSource(110): Video dimension (800x600) is unsupported 12-19 17:27:55.035: E/StagefrightRecorder(110): cameraSource do not init 12-19 17:27:55.035: E/StagefrightRecorder(110): setupCameraSource failed. (-19) 12-19 17:27:55.035: E/StagefrightRecorder(110): setupMediaSource is failed. (-19) 12-19 17:27:55.035: E/StagefrightRecorder(110): setupMPEG4Recording is failed. (-19) 12-19 17:27:55.035: E/MediaRecorder(30119): start failed: -19 Does anyone know why this discrepancy might exist (I know one of the supported record sizes is 1280x720 but that is too big for me).

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  • Live Camera capturing and printing software

    - by Matt
    I'm running a Haunted House exhibit at my school to raise money, and I had the idea of taking pictures of the "victims"/students remotely with my Sony DSLR camera and then printing and selling the photos as the students exit the haunted House (much like amusement parks do with roller coasters as you go down the final drop, or when one takes pictures with Santa Claus at the mall). Does anyone know of any free/relatively inexpensive software that would allow me to do this? I would prefer Mac-compatibility, but it's not a requirement.

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  • Rebroadcasting videostream from IP-camera

    - by Alexander
    The problem is the following: I have a camera D-Link securicam dcs-2121 (http://www.dlink.com.sg/products/?idproduct=310) it has its own web-server and works perfectly with a few connected users, but what I want is to make a lot amount of users able to connect and watch videostream, built-in server can't get trough many connections. So I need to translate stream to any external server and broadcast from it. What software or maybe service I need to use to this effect? thanks.

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  • Consume a WebService with Integrated authentication from WPF windows application

    - by Tr1stan
    I have written a WPF windows application that consumes a .net WebService. This works fine when the web service in hosted to allow anonymous connections, however the WebService I need to consume when we go live will be held within a website that has Integrated Authentication enabled. The person running the WPF application will be logged onto a computer within the same domain as the web server and will have permission to see the WebService (without entering any auth info) if browsing to it using a web browser that is NTLM auth enabled. Is it possible to pass through the details of the already logged in user running the application to the WebService? Here is the code I'm currently using: MyWebService.SearchSoapClient client = new SearchSoapClient(); //From the research I've done I think I need to something with these: //UserName.PreAuthenticate = true; //System.Net.CredentialCache.DefaultCredentials; List<Person> result = client.FuzzySearch("This is my search string").ToList(); Any pointers much appreciated.

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