All Questions
18 questions
54
votes
6
answers
25k
views
Best way of segmenting veins in leaves?
I have done a lot of research and found out methods like adaptive thresholding , watershed etc that can be used of detecting veins in leaves . However thresholding isn't good as it introduces a lot of ...
- 2,192
4
votes
3
answers
2k
views
Vein extraction from this image
I have this image:
What methods should I use to extract the veins from this image.
Thank you.
- 41
7
votes
2
answers
400
views
Locate Non Homogeneous Areas in an Image
I need to choose some points on an image. These points should be chosen more where there is lots of color changes, transitions and variations. Which techniques can I use for determining where most ...
- 194
11
votes
3
answers
2k
views
Most common modern day Image Segmentation techniques
I was doing some reading up on image segmentation techniques and I was wondering about modern day, state-of-the-art segmentation algorithms.
What current segmentation techniques that are a 'must-read'...
- 391
4
votes
1
answer
457
views
Rectangle Segments of Image (Rectangle Super Pixels) per Pixel
I would like to divide an image into "rectangular" components that are similar according to some visual criterion:
For example I found these algorithms :
https://scikit-image.org/docs/dev/...
- 143
1
vote
1
answer
172
views
Image Segmentation Using Deep Learning
I see in many reviews on Autonomous Car how they segment the images with person, cars, etc...
How is it achieved in Deep Learning?
Could anyone give an example of that?
How it is done?
- 144
0
votes
1
answer
2k
views
How we can use the Hadamard transform in feature extraction from an image?
Which coefficients of the Hadamard transform contain the highest energy compaction? Is there any regular pattern in them as for the DCT?
- 63
14
votes
4
answers
6k
views
Finding zebra-like pattern in image (Detection of structured-light fringe centerline from photo)
I'm working in a project where fringes are projected against a subject, and a photo is taken. The task is to find the centerlines of the fringes, which represent, mathematically, the 3D curve of ...
- 1,097
7
votes
3
answers
5k
views
count blood cells
How to count blood cells in opencv? The problem is that they stick together.
The example picture :
Maybe pairwise geometric histogram (Geometric Histograms) suitable for matching partial circle ...
- 560
3
votes
2
answers
525
views
Detecting Central Axis (petiole/rachis) of a Pinnated Palm
I'm new in StackExchange and I'd appreciate some help. I'm working in an algorithm for detecting "aguajes", a particular kind of palm. So far, I got good results using a texture feature extractor and ...
3
votes
1
answer
100
views
Find the Mid Point of a Worm / Chain Like Object
I have a video of worm-like objects which move. They can move in a straight line, they can rotate in circles, they can move in a serpentine/winding/sinuous way. I need to track them.
I already have ...
- 135
2
votes
1
answer
240
views
Looking for a way to fill holes in objects, and break bridges between them
I am trying to extract building footprints from satellite images. Using a series of morphological operations i.e erosion and opening by reconstruction, I'm able to obtain the footprints, albeit with a ...
2
votes
1
answer
6k
views
Which method to remove small unwanted region and fill holes
I have a hard problem that need your help. I have a binary image that maintains some unwanted region (small white dot) and hole regions (in figure 1).My idea is that the first I will remove unwanted ...
- 585
1
vote
1
answer
709
views
How to Obtain Mathematically High Frequency and Low Frequency Component Separately Using Bilateral Filter?
I have asked this question before in the sense that what does a high frequency and low frequency component signify in a image and i got satisfactory answers now i want to know that how i can get high ...
- 457
1
vote
2
answers
2k
views
Otsu's method problem?
I have a problem with Otsu's method. I would like to implement histogram to compute how many ones' and zeros'. For Otsu's method, I have a code from a book and it is running without problem. This is ...
- 357
1
vote
3
answers
530
views
The model of noise in Image denoising problem
I am studying the image denoising problem. The paper I studied uses Gaussian Noise to model the noise appearing on the image. E.e., If we say $u_g$ is a clean image, then we model the noisy image $u_0$...
- 121
0
votes
2
answers
82
views
How to represent a given equation more clear, profressional and short form?
I have a image $U_{m \times n}:\Omega \to \mathbb R^2$, the output $P$ can be define as
$$P=\mu J_{m \times n} - U$$
where $\mu = \max \{ u_{ij} : 1 \leq i \leq m, 1 \leq j \leq n\}$, $J_{m \times n}$...
- 211
0
votes
1
answer
1k
views
3D intensity map for grayscale image
I've got images of blood drops in grayscale and I want to generate 3D data where the first two dimensions represent the area of interest and the 3rd dimension represents the pixel intensity of that ...
- 101