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Search found 2068 results on 83 pages for 'camera'.

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• 3D zooming technique to maintain the relative position of an object on screen

  - by stark

  Is it possible to zoom to a certain point on screen by modifying the field of view and rotating the view of the camera as to keep that point/object in the same place on screen while zooming ? Changing the camera position is not allowed. I projected the 3D pos of the object on screen and remembered it. Then on each frame I calculate the direction…

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• Interesting 3d zooming technique

  - by stark

  Is it possible to zoom to a certain point on screen by modifying the field of view and rotating the camera as to keep that point/object in the same place on screen while zooming ? Changing the camera position is not allowed.. I projected the 3d pos of the object on screen and remembered it. Then on each frame I calculate the direction to it in…

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• Issues implementing arcball viewer

  - by Pris

  My scene has a simple cube, and a camera built with the lookAt function (I'm using OpenGL). The scene renders fine, and I'm sure I have my model/view/projection matrices set up correctly. Now I'm trying to implement arcball rotation for my camera, but I'm having some trouble. I've got it down to calculating the angle/axis rotation for a…

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• Create Adjustable Depth of Field Photos with a DSLR

  - by Jason Fitzpatrick

  If you’re fascinating by the Lytro camera–a camera that let’s you change the focus after you’ve taken the photo–this DSLR hack provides a similar post-photo focus processing without the $400 price tag. Photography tinkers at The Chaos Collective came up with a clever way of mimicking the adjustable depth-of-field adjustment effect from…

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• Problems with 3D transformation - (SharpDX)

  - by Morphex

  First of all , I have been trying to get this right for a couple of day already, I have read so much info and still fail miserably to understand this. So I am going to tell you that even though I have done fairly amount of research myself, I failed to implement it. I must say miserably I am trying to create a generic camera class for a…

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• How do I cap rendering of tiles in a 2D game with SDL?

  - by farmdve

  I have some boilerplate code working, I basically have a tile based map composed of just 3 colors, and some walls and render with SDL. The tiles are in a bmp file, but each tile inside it corresponds to an internal number of the type of tile(color, or wall). I have pretty basic collision detection and it works, I can also detetc…

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• capturing video from ip camera

  - by Ruby

  I am trying to capture video from ip camera into my application , its giving exception com.sun.image.codec.jpeg.ImageFormatException: Not a JPEG file: starts with 0x0d 0x0a at sun.awt.image.codec.JPEGImageDecoderImpl.readJPEGStream(Native Method) at sun.awt.image.codec.JPEGImageDecoderImpl.decodeAsBufferedImage(Unknown…

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• How does one make the camera on the iphone appear from the app delegate? Is it possible?

  - by K-RAN

  I'm just playing around with a simple program that opens the camera. That's literally all that I want to do. I'm a beginner and I believe that I have the basics down in terms of UI management for the iPhone so I decided to give this one a whirl. What I'm trying to do right now is... - (BOOL) application:(UIApplication*)…

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• How to use web camera in android emulator to capture a live image?

  - by Kumar

  Hi,As far as i know, Android emulator doesn't have a camera .To capture a live image we have to use web camera.I have seen code in this web site "http://www.tomgibara.com/android/camera-source" to use web camera in android emulator to capture a image but, i don't how to use this code.I am new to this field , can any one…

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• How to select camera by index when running VLC from cmd?

  - by Ole Jak

  When I start VLC from cmd how\is it possible to select a camera for directshow source by index (for example i have camera "A" and camera "B" so i would say 0 for "A" and 1 for "B") i do not know device name and i do not know camera name - only its index (0, 1...)?

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• How can I take a photo from my camera phone remotely? [closed]

  - by kurt

  Is there any app where I could control the camera of my phone remotely(even bluetooth would do) I have a Nokia 5800 xpress music. The app could either be a stand alone app installed on the mobile phone than could click snaps at predefined intervals or if there is a app that I can install on my PC and then control my…

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• Java.lang.RuntimeException:setParameters failed at android.hardware.camera.native_setParameter(Nativ

  - by bean chan

  I'm using the Android APIDemo sample code. but my phone is G2 Android OS 2.1

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• surveillance camera viewer programming in .net

  - by Takamari

  I'm trying to build a viewer application for analog surveillance cameras in .NET. Something along the line of Zoneminder. Just wondering if there's any api available or where should I start looking in the .NET framework? I'm no expert in the imaging area. Thank you.

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• How to capture live camera frames in RGB with DirectShow

  - by Jonny Boy

  I'm implementing live video capture through DirectShow for live processing and display. (Augmented Reality app). I can access the pixels easily enough, but it seems I can't get the SampleGrabber to provide RGB data. The device (an iSight -- running VC++ Express in VMWare) only reports MEDIASUBTYPE_YUY2. After…

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• android surfaceview camera preview

  - by Arutha

  I am trying to resize a surfaceview on which I am displaying a video. That doesn't work on the nexus one - after resizing the surfaceview, the screen is white.

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• Draw over camera using JAVA ME

  - by Richard Ibarra

  I'm wondering if there is anyway for drawing somethin over the videoControl. I tried using LWUIT but I can't achieve any result, have anybody done somethin similar? Any help will be appreciate

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• Sometimes UIImageView seems to reject the image taken with iPhone Camera

  - by maxbareis

  Hi, it is very strange, because this error doesn't happen all the time... I have the following code: - (IBAction)getPhoto:(id)sender { UIImagePickerController * picker = [[UIImagePickerController alloc] init]; picker.delegate = self; #if TARGET_IPHONE_SIMULATOR picker.sourceType =…

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• Developing an app with Camera Access and GPS

  - by Jins

  I need to develop a symbian application in which the app is triggered while taking a photo and upload to a web location with the GPS location of the phone. I would like to know which all devices can support this and is there any API restrictions or licence required to do this.

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• Easiest way to position camera in XNA?

  - by DMan

  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…

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• Samsung UMPC, Built in Camera doesn't support DirectX how can I use it?

  - by Markive

  The Samsung Q1 Ultra, is the perfect device for my software except that the built in camera seems to be incompatible with standard DirectX drivers, so my .Net camera implementation can't use the device. I have limited experience in this area.. Even Skype can't access this camera, but a…

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• Quaternion Camera

  - by Alex_Hyzer_Kenoyer

  Can someone help me figure out how to use a Quaternion with the PerspectiveCamera in libGDX or in general? I am trying to rotate my camera around a sphere that is being drawn at (0,0,0). I am not sure how to go about setting up the quaternion correctly, manipulating it, and then applying…

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• Box2D how to implement a camera?

  - by Romeo

  By now i have this Camera class. package GameObjects; import main.Main; import org.jbox2d.common.Vec2; public class Camera { public int x; public int y; public int sx; public int sy; public static final float PIXEL_TO_METER = 50f; private float yFlip = -1.0f; public Camera() { …

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• How can I add a portrait layout on top of a landscape Camera SurfaceView?

  - by user319919

  I need a Camera SurfaceView for my application. The camera should be set to fixed landscape view which is done by setting android:screenOrientation="landscape" for the activity in the AndroidManifest.xml. After doing some experiments and Google researches trying to use…

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• Move camera to fit 3D scene

  - by Burre

  Hi there. I'm looking for an algorithm to fit a bounding box inside a viewport (in my case a DirectX scene). I know about algorithms for centering a bounding sphere in a orthographic camera but would need the same for a bounding box and a perspective camera. I have most…

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• Calculate lookat vector from position and Euler angles

  - by Jaap

  I've implemented an FPS style camera, with the camera consisting of a position vector, and Euler angles pitch and yaw (x and y rotations). After setting up the projection matrix, I then translate to camera coordinates by rotating, then translating to the inverse of the…

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