voxel | Toy voxel engine written in python | Game Engine library

I have a setup with multiple cameras that all point towards the same scene. All cameras are calibrated to the same world coordinate system (i.e.: I know the location of all the cameras with respect to the origin of the world coordinate system). In each image from the cameras, I will detect objects in the scene (segmentation). My goal is to count all objects in the scene and I do not want to count an object twice as it will appear in multiple images. This means that if I detect an object in image A and I detect an object in image B, then I should be able to confirm that this is the same object or not. It should be possible to do this using the 3D info I have due to my calibrated cameras. I was thinking of the following:

• Voxel carving. I create silhouettes out of all images with the detected objects. I apply voxel carving and then count the unique number of clustered voxels I have. this will be the number of unique objects in the scene?

• I also thought about for example taking the center of the object and then casting a ray from it into the 3D world, this for each camera and then detecting if the lines cross each other (from different cameras). But this would be very error-prone as the objects might have a slightly different size/shape in each image and the center might be off. Also, the locations of the cameras are not 100% exact, which will result in the ray being off.

What would be a good approach to tackle this issue?

I have a clone of Minecraft and I want to see if the player falls off the island it would quit the game. I thought that if I wrote.

Say you have a point in 3D space with coordinate (2,2,2). How can you vectorize the operation with either numpy (I was thinking of using meshgrid, I just have not been able to get it to work) or scipy to find the 26 nearest neighbors in 3D space? There are 26 neighbors because I am considering the point as a cube, and thus the neighbors would be the 6 neighbors along the cube faces + 8 neighbors along the cube corners +12 neighbors connected to cube edges.

So for point (2,2,2), how can I get the following coordinates:

(1, 1, 1), (1, 1, 2), (1, 1, 3), (1, 2, 1), (1, 2, 2), (1, 2, 3), (1, 3, 1), (1, 3, 2), (1, 3, 3), (2, 1, 1), (2, 1, 2), (2, 1, 3), (2, 2, 1), (2, 2, 3), (2, 3, 1), (2, 3, 2), (2, 3, 3), (3, 1, 1), (3, 1, 2), (3, 1, 3), (3, 2, 1), (3, 2, 2), (3, 2, 3), (3, 3, 1), (3, 3, 2), (3, 3, 3)

I have already implemented this with a triple for loop, which works. However, speed is critical for my system and thus I need to vectorize this operation in order for my system not to fail. The triple for loop is as follows:

So i'm working on a voxel base engine and i'm currently changing from tkinter's canvas to PyOpenGl. I found the function glDrawnPixels who is very important for my engine. But here's the problem, i don't know OpenGL or PyOpenGl so much and my tentative sold with black pixel. So how do i do to have different color of pixel.

Here's a also my tentative :

I am doing single-voxel simulations on python to generate simulated signals with added noise. Then, I want to convert the resulting numpy array, with the following shape (100, 100) into a nifti file.

Rows represent one simulated signal under different conditions of noise and tensor rotation. Each column represents the correspondent signal intensity for that voxel under those conditions when measured with a specific sampling scheme (100 different directions).

[DWIs array]

I am to save this matrix into a nifti file with the following format (10, 10, 1, 100).

[Desired shape]

I don’t know how to properly allocate the numpy array (DWIs.shape = (100,100)) to the format I desire (10, 10, 1, 100):

I am trying to create a voxel style RPG like the one shown in Cube world. And I am trying to get an efficient low-GPU-intensive way to create Voxel water; like the water shown in these

https://www.youtube.com/watch?v=ZCFIchEZk2s

https://www.youtube.com/watch?v=qJa2w-7edKA

However instead of Blender in unity. I feel it would be good to use a procedual shader (for foam, and waves, and adapting to players jumping in it) of somesort to be efficient for my uses (Ocean, rivers, lakes etc...). though I cannot think of a way to create this kind of shader. I have attempted to throw toghether a shader however I am not the most experienced in the non-programming field.

Any help would be greatly appreciated. Thanks!

I am here cause I have a problem with my project.

Actually I want to create an unicolor cube named voxel. I have created 6 quads for building a cube and there's the result:

My fabulous cube with no texture or color

During this creation, I give to my quad a color with mesh.color. But it doesn't affect the quad color, nor take the color.

I try to follow the documentations below for the mesh color:

https://docs.unity3d.com/ScriptReference/Mesh-colors.html

https://docs.unity3d.com/ScriptReference/Mesh-colors32.html

So my question is: how can I use color or color32 on my mesh for create a cube with color ?

You can look my code here:

I am trying to use an algorithm for the problem "Max area of island" in a 3D problem, so it would be more like max volume of island. I was using total volumes of 200x200x200 voxels as input, but I am having trouble because it does not work when there are very big 'islands' in the volume I input ('core dumped' in the Ubunut terminal). Here is the code with the modifications I did to apply it to my 3D problem:

I want to create survival games with infinite block terrain(like Minecraft). So i using ursina python game engine, you can see it here

So i using perlin noise to create the terrain with build-in ursina block model. I test for first 25 block and it work pretty good with above 100 FPS, so i start increase to 250 block and more because I want a infinite terrain. But i ran to some problem, when i increase to 100 block or more, my FPS start to decrease below 30 FPS (With i create just one layer).

Here is my code: