are there examples of doing 3d-mesh generation using constrained delaunay triangulation?
I see there is constrained triangulation in 2d but not in their 3d mesh generation.
No, there is no implementation of a constrained Delaunay triangulation in 3D, in CGAL.
There is one in TetGen, but I am not sure there is an API for it.
Related
So i have a dataset that represents x-y-z coordinates of a linear motion. The dataset is noisy and i am trying to extract a smooth trajectory as close as possible to the real trajectory using a bezier curve and fitting each point as a control point of the curve. The results are moderately satisfying so i was wondering whether a pre-filtering with a lowpass butterworth will show any better results.
In general is it useful to combine a smoothing technique like bezier or cubic smoothing splines with low pass filtering?
I use TensorFlow 1.12
I would like to take a batch of feature maps [B,H,W,C], and would like to convolve each channel with itself.
This probably is possible with tf.map_fn, but I would like to keep these operations as vectorized as possible.
What is the best vectorized way of achieving it ?
Each channel is an image. Convolving an image with another, itself in this case, is most efficiently implemented in the Fourier domain using the convolution theorem. It states that a convolution of an image with another is the same as the inverse Fourier transform of the dot product of their Fourier transforms. Breaking that into steps:
Optionally, pad the images with zeros
Fourier transform both images.
Calculate the dot product of the Fourier transforms.
Inverse Fourier transform.
Both images being the same is a special case.
Question title is pretty self explanatory.
I couldn't find any option to quantize vertex coordinates.
I think Meshlab determines itself but I want to determine it myself. (32bit 16bit 10bit etc.)
Does meshlab capable of quantization of vertices? If not what is the default bit value of vertex representations?
To my acknowledge, meshlab is not capable of doing that. I suggest you to export your mesh in ply ascii file format and use matlab or python to process the lines of the coordinates.
In Java3D application I have two planes. How can I find if they have an intersection and if they do what is the angle between these planes? And how to resolve the vector of their intersection?
I am using postgresql and I have a table containing 2d polygons (PostGIS geometry type). Now my question is how can I extrude this polygon into a nice 3d building.?
Can anyone help please? because I couldn't find a good tutorial on it.
Many thanks