Linked Questions
24 questions linked to/from How to find image coordinates of the rendered vertex?
25
votes
2answers
16k 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 ...
5
votes
1answer
2k views
Alternative to redraw_timer()
I have a script whose goal is to find all the visible vertices from the camera view. The simplest solution should work as follows:
Go Into Camera View
Update the view with ...
5
votes
2answers
419 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 "...
4
votes
1answer
740 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 ...
3
votes
4answers
1k views
Mesh silhouette as a polygon or pixels surrounded by the silhouette on the rendered image?
Here is my target application. The rendered image with rendered meshes is used in an interactive application. A user may click or point the cursor to an object on the image. Information related to ...
3
votes
1answer
2k 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 ...
3
votes
0answers
516 views
3D Mesh Vertex to 2D Pixel Coordinates [duplicate]
I can obtain the coordinate of a mesh vertex with python via
wco = mesh.vertices[mesh_vert_idx].co
Further, it is possible to convert this coordinate system to ...
2
votes
1answer
1k views
blender camera from 3x4 matrix
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 P I need code to return a ...
2
votes
2answers
2k views
Python: Obtaining Object Contour Pixels
I would like to obtain the pixel coordinates of an object's outline in the currently-rendered scene, using the bpy module.
I found this, which is related, but I'm still not sure how to do it.
Has ...
2
votes
1answer
291 views
using python to find object with the pixel information from the render
I wanted to know if anyone had to find a object by only knowing the pixel (x: 300, y: 300)information in a final render say like (essentially using camera view)
Is there a way to find the correct ...
2
votes
0answers
871 views
How to find if the vertex of an object is occluded by another vertex/face in front of it from a given viewpoint?
I can use the recipes on this page: How to find image coordinates of the rendered vertex?. But is there a way to know if a point is being occluded by some point/face in front of it from the viewpoint ...
1
vote
1answer
650 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:
...
1
vote
1answer
749 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
1answer
90 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
0answers
250 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, ...