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Question
Remove pixel whose value is below given threshold
Hello, how can i remove pixels from an image whose values are below/above a given threshold value? As far as I know images in M...
mer än 2 år ago | 4 answers | 0
4
answersQuestion
image block clustering using kmeans
Hi all. I have block from an image obtained using: BlockImage = im2col(A,[m n],'distinct') How best can I cluster similar bl...
mer än 2 år ago | 1 answer | 0
1
answerQuestion
get distnct blocks contained in a given matrix.
Hello. Lets say an image of size [M N] to blocks of size [i j] each. using the following piece of code: A = im2col(im,[i j],'di...
nästan 3 år ago | 1 answer | 0
1
answerQuestion
how to extract frames from video using video reader efficiently
Hello. I extract frames from a video with file extension .mp4 using the code below following this discussion: vid = VideoRe...
mer än 3 år ago | 0 answers | 0
0
answersQuestion
use gpu for image processing
hello, I have created about 1500 images on disk. I process them, store the results as mat files on disk, say image1_result1.mat,...
mer än 3 år ago | 1 answer | 0
1
answerQuestion
pre-define a struct/array of structs in attempt to get rid of out of memory error.
Hello, how can i pre-define an array/struct of structs? Motivation. I was dynamically creating an array that grew with every ite...
mer än 3 år ago | 2 answers | 0
2
answersQuestion
Image format converstions for processing
hello, all. i have an rgb image of class uint8 with dimension m-by-n-by-3 that i need to convert to double with dimensions m-by-...
mer än 3 år ago | 1 answer | 0
1
answerQuestion
unable to perform assignment error in im2col
Hello, I think am making a basic error somewhere but I can not figure it out yet. How best can I achieve this, or what type of ...
nästan 4 år ago | 1 answer | 0
1
answerQuestion
Retain rgb image after processing
Hi all. how are you? How can I retain a colored image from a processed image. I know how to extract RGB color components(chan...
nästan 5 år ago | 1 answer | 1
1
answerQuestion
How to plot a 2d potential function
Hi all. Today I came across a function f(X,Y) = cos(2*pi*X)(1+3Y) + ((2*pi*y)^2)/2. I thought this was a 3d function but appar...
mer än 5 år ago | 1 answer | 0
1
answerQuestion
Solving a homogenous non linear system of equations in MATLAB
Hi all, I have the following homogeneous system. I am wondering how I can solve this in MATLAB, that is if it even has a solutio...
ungefär 7 år ago | 1 answer | 0
1
answerViewing answers numerically from pdetool box
Thanks very much, am definitely trying it out tomorrow and letting you know if anything weird, or cool happens. thanks for the r...
mer än 10 år ago | 0
Question
Viewing answers numerically from pdetool box
hi all, how can i view the answers to a given pde that i solved using the pde tool? i want to see the solution matrix but the p...
mer än 10 år ago | 2 answers | 1