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Questions tagged [point-cloud]

The tag has no usage guidance.

0
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0answers
143 views

Get bounding box of GameObject in camera image

I'm trying to get the bounding box of a single GameObject in pixel coordinates but the calculated coordinates are at the wrong position. What am I doing wrong? Here is my code: ...
0
votes
1answer
234 views

How can I sort vertices efficiently in a specific direction (CW/CCW)?

I am trying to triangulate a set of points using a very simple approach where a base vertex is chosen, and then every other vertex is joined to its neighbouring vertex and then back to the base vertex,...
1
vote
1answer
187 views

Show only some parts of a point cloud. OpenGl4

I am developing an opengl 4.0 app which is showing a point cloud. In the other hand, I have an array "pos" where I have some x,y,z positions: ...
1
vote
2answers
600 views

How do point clouds become polygons?

I have reached some limits in my game experiments that seem to be solvable by working with content as 'point clouds'. My main concern now is how to convert the resulting point clouds into polygon ...
1
vote
2answers
50 views

What methods are there to discard points on one side of a surface but not the other?

Goal: Given a surface mesh (terrain), discard all points above a given elevation relative to the terrain. The terrain can change quite often due to tiling and LODs, so the point culling will need to ...
3
votes
3answers
1k views

Find two points in a point cloud with the maximum distance?

What is the least computationally complex way to find two points such that the distance between them is greater or equal to any other pair. Remember hearing something about how you could find such a ...
0
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2answers
2k views

Array of 3d points, construct point cloud or surface (OpenGL)

I have an array of 3 dimensional point objects, I can manipulate the input into this array into any configuration I want, for example, it could be a vector of floating point numbers, a vector of ints, ...
1
vote
2answers
163 views

Is the rendering of distorted point clouds more complex?

I have two point clouds of n points: A dense ball-shape point cloud with many points inside A spherical point cloud with points on its surface. Is there (really) any difference between rendering (...
2
votes
2answers
612 views

Is any data structure more efficient than quad-tree for storing and querying points that lay within an OBB?

Is there any method more effective than quad-trees for storing and searching sets of points that are not spread uniformly on the plane? I need to be able to add, remove and search for points that are ...
6
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1answer
145 views

Spatial data visualization level of detail

I have a 3D point cloud data set with different attributes that I visualize as points so far, and I want to have LOD based on distance from the set. I want to be able to have a generalized view from ...
3
votes
0answers
293 views

Point cloud to CAD model [closed]

Point clouds can be obtained from a physical camera using phase shift algorithm. These may be 3-4 separate point clouds. My job is to combine those point clouds (register, filter) using signal ...
4
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0answers
151 views

How can I create a set of collision points for an arbitrary mesh?

In my project I am working on automatically deforming an arbitrary mesh with respect to another arbitrary mesh, within the context of user generated content, similar to this deformer being developed ...
4
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2answers
7k views

Find a line that connects the outer most points in a set of points

Does anyone know an efficient algorithm to find the edge of a point cloud? Hopefully the picture in the link can illustrate what I mean. It's a plus if the algorithm can handle point clouds that are ...
1
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1answer
2k views

Points in d3d11

D3D10/D3D11 drops support for point primitives. I'm trying to render a set of points for quick and dirty debug, any suggestions/quick hacks for getting large size points to show up in D3D11?
7
votes
2answers
5k views

Real Time Cloud Algorithm

I want to know how the algorithm works in this game: http://www.gametrailers.com/user-movie/cloud-the-game/45068 Especially how the game generates the real time cloud, and be able to merge with other ...
17
votes
6answers
3k views

Is Unlimited Detail real?

Many aspects of Unlimited Details Unlimited Detail Technology seems dubious to me, even the introductory paragraph (because of the usage of the word unlimited): Unlimited Detail is a new technology ...