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Questions tagged [occlusion]

74 questions
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How to correct sort order for opaque objects in orthographic rendering

In THREE.js, When viewing a grid of cubes through an off-axis OrthographicCamera, once the camera rotates enough that the objects ought to occlude one another, it appears that the rendering order of the objects is not based on their position in…
Tom Auger
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Post Processing Stack Ambient Occlusion stops working on runtime with Unity, VRTK, and SteamVR on the HTC Vive

When adding ambient occlusion from the Post Processing Stack asset onto the SteamVR camera, it works fine until I hit the play button (SteamVR is enabled for this as the VRTK manager automatically disables it). After that it disappears. I noticed…
Tishbyte
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glGenQueries always return non-query objects, glBeginQuery return error

I'm trying to create an occlusion query using openGL 3.3, using GLFW, GLEW load function: uint32_t glQueryID; glGenQueries(1, &glQueryID); if (glIsQuery(glQueryID)) //just for testing its always false ! { ... it must be always true !?! } draw…
mofed8461
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How to register two occluded images

I have two mult view occluded images such as enter image description here - reference image and enter image description here- sense images. These images are multiview- translatin and rotation images. I want to registe of two images. When I have…
user1638331
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glGetQueryObjectuiv, "Bound query buffer is not large enough to store result."

I am trying to solve an error I get when I run this sample. It regards query occlusion, essentially it renders four times a square changing everytime viewport but only the central two times it will actually render something since the first and the…
elect
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Data from Depth Sensor to OpenGL's z-buffer to achieve occlusion

I would like to learn more about occlusion in augmented reality apps using the data from a depth sensor(e.g kinect or Realsense RGB-D Dev kit). I read that what one should do is to compare the z-buffer values of the rendered objects with the depth…
mariosbikos
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Delete Internal Faces in MeshLab, NOT All Internal Structure

I have an stl file which is composed of contiguous cubes, like this: I need to remove all the shared faces of the cubes, so the structure become one continuous solid. Note that I cannot just delete ALL the internal structure. The object is hollow…
Chris Parry
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occlusion culling test 3d

Suppose we have a body,whose shell is represented by flat triangles (Polygon Mesh). The mesh is consist of millions of polygon for the needed accuracy level. Furthermore, the body is not convex (it is not a sphere, watch wiki page “Polygon mesh” for…
user2413982
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How to clone a section of screen in real time on android?

I'm trying to solve a finger occlusion problem by having on touch events clone the covered section of the screen to an imageview. I am pulling the image from /dev/graphics/fb0 and cropping the image based on touch…
Roadblock
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XAudio2 occlusion processing

I'm working on a home brew game engine and I am currently working on the audio engine implementation. This is mostly for self-educational reasons. I want to create an interface wrapper for generic audio processing, so I can switch between OpenAL,…
Erik Frantz
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Grouping 1D lines by overlap or lack thereof

edit: Hierarchy doesn't play nice with my goals here. Leaving original request, but I answered what fulfills the core request (overlap/non-overlap rules) below. Assume there is some set of 1D lines, each described by 2 unsigned ints: start and end,…
user173342
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Unity - prevent occlusion culling with far objects

In Unity, I'm having a scene where objects are far from each other but they are visible from each other in unity editor. But when i play in the game mode they are not visible and gets generated when player gets close to them. I have set off the…
Pradyut Bhattacharya
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Functions in OpenCV to track a gradual curve past an occluding object

Are there functions within OpenCV that will 'track' a gradually changing curve without following sharply divergent crossing lines? Ex: If one were attempting to track individual outlines of two crossed boomerangs, is there an easy way to follow the…
StringTheory
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