Anything pertaining to the techniques for creating a 3d-camera effect in an application dealing with 3d-graphics (a game, a simulator, a 3d CAD program, etc.). A 3d-camera effect reproduces the effect of a camera that can move in the virtual 3-dimensional space modeled by the application and can be used to "observe" the virtual environment from different point of views.
Questions tagged [3dcamera]
34 questions
3
votes
4 answers
3d Camera Position given some points
Heyo,
I'm currently working on a project where I need to place the camera such that the full motion of a character would be viewable without moving the camera. I have the position where the character starts, as well as the maximum distance that the…
Will Mc
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3
votes
1 answer
JavaFX Rotating Camera Around a Pivot
Last year I posted a similar question, but due to it not being very descriptive and overall a mess I decided to rewrite it completely.
I am making a simple 3D editor in JavaFX that has a camera movement similar to Blender or pretty much any other…
Mysterious Wolf
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3
votes
0 answers
Qt3D How to move the rotation axis to the centre of the object?
I am working on a simple 3D application where I am rotating the 3D object based on the Quaternion values that I read from the MPU6050 sensor.
I used the below code from simple-qml example as reference:
Entity {
id: sceneRoot
property real x:…
jxgn
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3
votes
1 answer
Structure from Motion, Reconstruct the 3D Point Cloud given 2D Image points correspondence
Use-case
An object is rotating around it’s center in varying speed
A fixed camera is looking at the object
Given 2D Image points correspondence reconstruct the 3D Point Cloud
As the object rotates so a different part of it is seen to the Camera,…
NadavRub
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3
votes
1 answer
FPS style camera target calculation in XNA
What I need is to calculate where my lookat 3d vector would be based upon the camera position, the Y rotation and Z rotation, I would assume that any number greater than 0 would be sufficient for the distance from the camera to look at.
Here is the…
TotalJargon
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2
votes
1 answer
Equation of line from center of camera to plane in ThreeJS
I am working on a fork of threeJS editor and for a particular functionality, I need to get the world point where the center of camera is pointing at.
I believe that if I am able to get the equation of line from center of camera in the direction it's…
Muhammad Ijlal
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2
votes
2 answers
OpenGL: creating my own camera
I'm trying to create a camera to move around a 3d space and am having some problems setting it up. I'm doing this is Java, and apparently using gluPerspective and gluLookAt together creates a conflict (the screen starts flickering like…
Zepee
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2
votes
6 answers
Determining camera location from 3 known points
I'm new here - so please bear with me if I make a faux pas!
My question is, is there a good algorithm for determining the 3d location and orientation of a camera based on where 3 (or more) known 3d points end up on an image as viewed from that…
user284403
2
votes
2 answers
Will this cause gimbal-lock?
I making a very simple 3d scene, having 5 points in world coordinates. I'd like to navigate across the scene so I'm defining a camera with both an UP and OUT vector. With this information I generate a rotation matrix in every frame, which I'll apply…
Al.
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vote
1 answer
Glut glLoadMatrixf camera equivalent
In my glut application I'm simulating a plane with the camera. When the planes speed is low I intend to have the nose start to point towards the ground as the camera falls. My first instinct was to just change the pitch until it was pointed…
Bolt_Head
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vote
0 answers
I am using open3d, my task is to crop an open cloud but , I am struck with not knowing the indices of the required area to be cropped
There are lot of objects in a point cloud and my task is to crop a particular object. I would like someone to help me on knowing the indices of points associated with the object and to crop it. I have seen the documentation in open3d site which…
sree-9
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1
vote
1 answer
How is point cloud data acquired from the structured light 3D scanning?
I am trying to understand the 3D reconstruction of Object using 3D structured Lighting scanner and I am stuck at the point where a method of decoding set of camera and projector correspondences to use to reconstruct a 3D point cloud. How exactly is…
techno
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vote
1 answer
Unable to run tune_blockmatcher and image_to_pointcloud programs
I am able to capture images on webcams and calibrate them well using
StereoVision library from erget.
But, while trying for execution of tune_blockmatcher and images_to_pointcloud, i found below errors as StereoBM and StereoSGBM classes are unable…
Praneeth varma
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vote
2 answers
(Processing)How to move a 3D object according to the screen's XY axis, instead of the world's X,Y,Z(PeasyCam)
Im writing a 3D sketch in which the user rotates the camera with peasyCam while left clicking and moving the mouse. The thing is that I want to move the objects while right click is pressed so that the user can drag the object across the screen's X…
ross ross ross
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1
vote
1 answer
SceneKit - Fix screen frame to camera edges
I'm working on a app that renders a 3D scene that simulates a real space into an iPhone making its screen become a hollow box, as seen in the sketch below:
(note the camera position order down below)
The problem is on how to calculate the camera…
Ramon Balthazar
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