Linked Questions
29 questions linked to/from How to find image coordinates of the rendered vertex?
1
vote
1
answer
310
views
Label points in plane and get position after transformation
As I'm a Blender greenhorn, I need your help. Here is my problem:
I have a document added as plane. Next, I want to label certain points within the document. Afterwards, I transform (fold and rotate) ...
1
vote
0
answers
197
views
How to get the pixel coordinates of a rendered object
I want to render an object (plane) and want to know exactly where this object is in the image.
To do so, I discovered this answer which was already quite helpful.
Here the code I use, based on the ...
1
vote
2
answers
268
views
Programmatically crop render region to geometry
I have a complex geometry nodes setup and a script to render out multiple viewlayers as separate images. For context, I'm generating the fixed imagery necessary for previewing a framed canvas product ...
2
votes
1
answer
764
views
List all occluded objects from camera
I'm trying to have a list of objects that are occluded from camera view. 'bpy.context.scene.ray_cast()' does not help since it also returns occluded verts/objects.
I have visited some other answers ...
2
votes
1
answer
2k
views
How to find all image coordinates of rendered object?
I got my object and I need to know all pixels that are displaying this object in my rendered picture.
I read about a smiliar question here.
update
I tried this code from here:
...
2
votes
0
answers
71
views
How to find the alignment between a mesh and a render?
I am currently doing the following (all via bpy in Python):
Load a triangle mesh in Blender, and convert it to quads. The mesh is a flat object (like a bent piece of pape).
Add a texture to the mesh.
...
6
votes
1
answer
419
views
Finding image coordinates of rendered vertex after refraction, distortion, etc
I'm in blender 2.92 working with the Python API. I know how to get the pixel coordinates of a vertex before refraction, lens distortion, etc.--see e.g. How to find image coordinates of the rendered ...
0
votes
0
answers
386
views
Vertex is visible to the camera or obscured
How can you know if a vertex is visible to the camera, or is it obscured by some faces of the same mesh or a mesh of other objects?
I need a python solution for Blender 2.92 or above. At the input of ...
29
votes
2
answers
32k
views
3x4 camera matrix from blender camera
In computer vision, the transformation from 3D world coordinates to pixel coordinates is often represented by a 3x4 (3 rows by 4 cols) matrix P as detailed below. Given a camera in Blender, I need ...
1
vote
0
answers
182
views
Bounding box of 3D object in 2D render is offset
I am currently trying to translate a 3D object in my Blender scene to a region of interest in the respective 2D render. I have found these solutions 1, 2, and 3 that make use of the ...
5
votes
2
answers
1k
views
Perspective Flatten Geometry by Shrinkwrap
I have a 3D scene I need to flatten towards the cammera in order for the geometry to still appear 3D when viewed in a 2D game from the front. I've done this in Maya with the shrinkwrap method and the "...
3
votes
1
answer
3k
views
Python: Check if vertex is on camera field of view [duplicate]
Suppose I have the following camera perspective.
As you can see some of the Cube vertices are visible from the camera, others are not.
Is there a way from python to detect if a certain vertex is in ...
2
votes
1
answer
2k
views
AttributeError: 'Mesh' object has no attribute 'view_frame'
I am trying to get the pixel coordinates of the object in the rendered image in blender using the How to find image coordinates of the rendered vertex?
But I get the error AttributeError: 'Mesh' ...
1
vote
0
answers
491
views
How to get objects and mesh object vertices from camera view with Python in Blender 2.8 [duplicate]
What I want to do
I want to change the power of only the light object visible in the camera view.
I want to remove vertices to mesh objects in visible in the camera view. Not remove mesh objects, ...
4
votes
1
answer
951
views
Blender scripting: Circle Selectiong in the "3D View"
In Blender2.74, I want to circle-select the vertices in the "3D View", using this: circle_select(x = 300, y = 400, radius = 30).
I found this question. So I know ...