How do you triangulate a 3D point from a pair of stereo images?
I'm working with a stereo pair of photos, and trying to obtain a set of 3D points from matching points on these 2 images. How exactly is the 3D point triangulated? Do you throw a ray from the camera pinhole centerpoint? Or do you throw a ray perpendicular to the photos?
I want to create a function wich knows if a line hits a point. Is there any function like that? I also want to set the size of my 3D-points in centimetre and dont know how to do that. I appreciate you
I want to know how is it possible to import just a 3D model from maya to JOGL?
OpenCV contains a lot of support for 3D reconstruction from stereo cameras. In my case, I have six calibrated cameras (intrinsic and extrinsic), and I'd like to take common 2D points (say, of a test s
How do you extract data from gdb so you can examine it in another program? I am using gdb to debug a program. To see what is in array udata, I have created a source file called printudata with the fol
I have a VERY simple 3D space defined in WPF, which defines a single 3D rectangle and a 3D camera. The 3D Rect has a Material of a VisualBrush which depicts the contents of the window. It works fine(t
I can view the point clouds that are given with the Point Cloud Library. But, the problem is I cannot view my point cloud which I have generated from my stereo rig images. The images are of resolution
I have problems understanding the depth (Z) value in 3D point cloud resulted from 3d sparse reconstruction like this example in MATLAB: http://www.mathworks.com/help/vision/ug/sparse-3-d-reconstructio
If you have the full relative-3D values of two images looking at the same scene (relative x,y,z), along with the extrinsic/intrinsic parameters between them, how do you project the points from one sce
Do you know any examples of using CSS 3D Transforms in the wilds but http://2012.beercamp.com/ and http://acko.net/ ?
(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
I have a 3D model consisting of point vertices (XYZ) and eventually triangular faces. Using OpenGL or camera-view-matrix-projection I can project the 3D model to a 2D plane, i.e. a view window or an i
I have been trying to create a 3D looking card-flip type of animation for a project I've been working on. Unfortunately my animation doesn't look entirely 3D. I've been using this guide. In the first
I have a 3d point P and a line segment defined by A and B (A is the start point of the line segment, B the end). I want to calculate the shortest distance between P and the line AB. Calculating the di
I have a point-cloud of 3d points in MATLab. The point-cloud is in the form of a 3xN matrix. I want to calculate the normals for each of these points in the form of a 3xN matrix. How would I go about
I know how to check if a point is on a 2d line or not, but I'd like to do this in 3D. Any ideas? // slope from point 1 to point 3 var p13:Number = (Math.atan2 (end.x - start.x, end.y - start.y)) * to
I have a set of points in 3D that lie on a surface and I also have the normals at every point. I would like to generate a surface triangulation with this information. In addition I could tell the algo
I have written a volume rendering program that turns some 2d images into a 3d volume that can be rotated around by a user. I need to calculate a normal for each point in the 3d texture (for lighting)
I have a question about displaying a 3D volume made from an array of 2D grayscale images using OpenGL. To be more precise, I only want to display the central slices of the volume in x, y and z directi
We are writing an importer for dicom files. How does one generally deceide if a series of images forms a 3D-Volume or is just a series of 2D images? Is there a universal way to decide this for most ve
By NAudio .net library, I'm trying to capture Stereo Mixer voice. var recorder = new WaveIn(); This WaveIn class captures from mic. How to change to Stereo mix? Note: Stereo Mixer is enabled.
How do I render a .obj file (in 3d)? And how do I add color to that? I'm on an OS X, and using XCode 4. Here's my little 'test lab'. #include <GLUT/glut.h> #include <iostream> void render(
Microsoft distributes source code to reference implementations of their different Direct3D APIs to hardware vendors, driver developers, etc. This code builds using the ever-cryptic WDK (formerly DDK)
Suppose I wanted to add, subtract, and/or multiply the following two floating point numbers that follow the format: 1 bit sign 3 bit exponent (bias 3) 6 bit mantissa Can someone briefly explain how
I have some objects in the scene, some may occlude others. When I click the mouse or drag-select to get a selection rectangle, I want to select/pick only the objects that I can see from this perspecti
How can I compute the dense disparity map from to stereo images ? My idea so far was to go over all the pixels from the first image, and scan the second image for matches. To compare the similarity of
If I have a mesh modeled in Cinema 4D, how can I export it for the three.js 3D JS Engine ? Also, it would be handy to export material colors for polygon selections.
How do you provoke a floating point error in 32 bits (commonly known as coprocessor error [INT 16 :8086].
I want to provide a virtual webcam via DirectShow that will use the video feed from an existing camera running some tracking software against it to find the users face and then overlay a 3d model orie
I have a set of images of a scene at different angles and the camera intrinsic parameters. I was able to generate the 3D points using point correspondences and triangulation. Is there a built-in metho
Clarification: You have a point in 3D space and a stereo camera setup that captures the point in its left and right images. Is there a function that uses the pixel coordinates of the point in both ima
I have a point cloud from real world and I want to fit a surface on them and calculate curve of the points(!). since points are in the real world so amplitude of difference between x, y and z of point
http://www.myecovermaker.com/ecover-design This site renders 3d images from user selected images such as 3d books, 3d cd covers etc, I can find that site is created in php, but couldnt understand wha
How do you upload images to a gist? Take a look at this: https://gist.github.com/mbostock/5503544#file-thumbnail-png What I have tried is drag-and-drop the image file while in the edit mode of a gists
I did not took computer vision in college but I'd like to give it a try. I want to make 3D model from a set of pictures. I know you can do it with 123d catch or agisoft photoscan. doing it is not the
I have many 3D point clouds gathered by velodyne sensor. eg(x, y, z) in meter. I'd like to convert 3D point clouds to range image. Firstly, I've got transformtation from Catesian to spherical coordina
I am developing WinForms MDI app in VS2010 (.NET 4.0) and I just hate 3D border in MDI parent form. So any ideas on how to remove it (make it flat or just no border it all) ?
I am looking for a method or an algorithm which would allow me to recognize and pair sets of points from two different images, for the purpose of stereo vision. The attached picture presents what I h
I have a task to locate an object in 3D coordinate system. Since I have to get almost exact X and Y coordinate, I decided to track one color marker with known Z coordinate that will be placed on the t
I would like to get 2D screen coordinates of a 3D coordinates point with OGRE. Is there any simple ogre function to do this ? Thanks a lot.
Based on information in Chapter 7 of 3D Programming For Windows (Charles Petzold), I've attempted to write as helper function that projects a Point3D to a standard 2D Point that contains the correspon
How porting from 3D Max / or other 3D application realistic earth model to iOS device ( Open GL ES) How porting atmosphere effects ( not clouds - it is texture) - the glow of sky?
or is it entirely dependent on Bumblebee (or any other Point Gray Imaging sensor for that matter)?? I am trying to link the stereo processing API that comes with bumblebee 2 stereo rig to process some
I would like to display all images from a folder in a slideshow without having to specify every file name specifically using CS4 - AS3.
I am using the open source haptics and 3D graphics library Chai3D running on Windows 7. I have rewritten the library to do stereoscopic 3D with Nvidia nvision. I am using OpenGL with GLUT, and using g
what I am trying to do is to set up functions that can perform global and object space rotations, but am having problems understand how to go about object space rotations, as just multiplying a point
I'm trying to center a webGL sphere to a specific x,y point. I can already position the globe using the Spherical Coordinates (setting the phi and theta), but I first need to convert x, y coordinates
How do you draw on an image from vector or vector? I have VectorPoints vector<Point2f>. I just need to draw on an image from VectorPoints using openCv. Any suggestions?
I'm trying to create a 10 x 8 array in MATLAB filled with floating-point values. Ideas? UPDATE: I am actually trying to create an empty 10 x 8 float-type array. How can I do that?
I have a 3D non-degenerate triangle, with a front and back determined by vertex winding. This triangle, together with a depth d, describes a right triangular prism* (the back of the triangle is insid
I use the android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI intent to load music files from the SD Card. Intent tmpIntent1 = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Audio