Skip to main content

Questions tagged [julia]

Julia is a high level, high performance, dynamic programming language. While it is a general purpose language and can be used to write any application, many of its features are well suited for numerical analysis and computational science. Use this tag for questions involving examples and / or code in Julia.

Filter by
Sorted by
Tagged with
1 vote
0 answers

Removing noise from data series of road surface data

I have a data series containing underlying noise, the plot of which is : The issue is to remove the noise leaving the pattern which is raised above the lower level. The lower level is road surface ...
Roy Jaques's user avatar
2 votes
2 answers

Use DFT (`fft()`) to Replicate 2D Convolution (`conv()`)

In MATLAB, I tried to convert the fft2-based multiplication using conv2. ...
Ka Mirul's user avatar
4 votes
1 answer

Detect Longest Vertical Lines (Edges) in an Image

I have a task in image processing, which need to detect vertical lines from matrix. For example, there is a pair of white and black vertical lines segmenting the picture below. I need to find it. So I ...
Jun Yang's user avatar
5 votes
4 answers

Is the negative spectrum (by DFT) of a real signal "needed" to reconstruct it?

I'm trying to grasp the "ah-ha!" moment for the DFT/FFT. One of the points I struggle with is: if the original time signal $x[n]$ is real, then the values of the DFT $X[k]$ are (correct me ...
Alessandro Bertulli's user avatar
4 votes
1 answer

Using Least Mean Square (LMS) Filter for Beamforming on Linear Array in Julia

I have been trying to implement a simple LMS adaptive beamforming code. Since I don't have a MATALB license, I decided to use Julia since they are quite similar. In order to get a basic code working I ...
Kristoffer Lindvall's user avatar
2 votes
1 answer

Implementation of a Separable Bilateral Filter for Edge Preserving Smoothing

I’m trying to optimize my naively implemented O(n^2) bilateral filter for 2D images. I googled and found a lot of theoretical explanations about the separate one. However, it seems there are things ...
jinglei's user avatar
  • 121