Python code for generate 3d mesh from 2d picture (pattern)

Grasshopper
,
1

Hi,
I need a python code that takes 2D images and generates a 3D mesh.
This is an example of a 2D image that needs to be converted to a 3D mesh.
images_10.1177_1478077121992487-img9

2

A 3D mesh, with everything given the same Z co-ordinate?

Look into edge detection algorithms.

3

In fact, I am looking for an automatic code or algorithm that converts a large number of patterns into a mesh.

4

What do you think about this code?

import rhinoscriptsyntax as rs

def convert_image_to_mesh(image_path, mesh_height):
# Load the image
image = rs.AddTexture(image_path)

# Get the dimensions of the image
width, height = rs.TextureSize(image)

# Create a grid of points
points = []
for y in range(height):
    for x in range(width):
        pixel_color = rs.TexturePixel(image, (x, y))
        if pixel_color[0] < 128:  # Assuming black and white image (black pixels have lower values)
            points.append(rs.AddPoint(x, y, 0))
        else:
            points.append(rs.AddPoint(x, y, mesh_height))

# Create a mesh from the points
mesh = rs.AddMesh(points, range(len(points)-width), range(width, len(points)))

return mesh

Usage example

image_path = “C:/path/to/your/image.png”
mesh_height = 10 # Adjust this value to control the height of the mesh
result_mesh = convert_image_to_mesh(image_path, mesh_height)

Output the result mesh

a = result_mesh

5

There are dozens and dozens of efficient algorithms that would be vectorised and fast, that would allow you to get approximately to what you want. Or at least get a starting point.

6

Give a real example if possible.