image-segmentation refers to the process of partitioning a digital image into multiple segments, typically to locate objects and boundaries.

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Image segmentation algorithm

I wonder if there are algorithms used to segment images efficiently. The ones I tested by now can not segment hair correctly as on this image: I just want to know if someone can give me some ...
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1answer
26 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 ...
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7 views

How the weight $ω_{i,t}$ is initialized in Background subtraction GMM (Gaussian Mixture Model)?

I read Chris Stauffer paper "Adaptive background mixture models for real-time tracking" about Gaussian Mixture Model for background subtraction, but they're not explained very detail about $ω_{i,t}$ ...
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91 views

Detect text regions within scanned documents

I'm working on text detection task from scanned documents to detect text regions only and separate them from images, graph, etc. Here is my idea : First i'm using OpenCV wrapper for C# (Emgu) on ...
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34 views

How to straighten the edges?

Are there standard efficient ways/algorithms to make edges in an image more straight or axis-parallel (horizontal or vertical) ? I have images that look like this: This is part of a segmentation ...
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12 views

Aligning frames with common elements

I am new to image processing and had the following question: I have take some 512-px grayscale images. The images were take in such a way that all images were of the same spot, but there was some ...
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1answer
46 views

What preprocessing technique can help me to filter the background text noises using matlab…the image is shown below?

Can anyone help me to improve the degradation of the following image....i am working on OCR system in Amharic language and what is the best image filtering technique that can help me to separate ...
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17 views

How to programatically perform image segmentation in real-time

I am currently trying to segment ultrasound images of blood vessels (video frames), such as the one directly below. Using a simple binary filter on the saturation channel (code below), I can get a ...
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19 views

How does Arbib's clustering method work?

Recently in Image Processing I've been studying image clustering (or segmentation) methods and one of them is Arbib's. I understand the main idea behind it from which you start with one cluster with ...
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2answers
213 views

Segmentation of overlapping noisy parallelograms in a binary image

Edited. Previously this question was named "Segmentation of overlapping pulses in a binary spectrogram" and it was stated in slightly different way. I'm apologise to those users, who were affected by ...
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49 views

How can I make the background color white for this Grab-cut algorithm written in Python?

I am new to Image Processing and am using Grab cut algorithm to extract the foreground objects from images as a part of my project. Below is the code written in python to do the same. The problem is ...
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1answer
39 views

How to segment object when it has similar histogram with background

I am working in image segmentation and I would like to ask you something about my problem. I have a image such as bellow. I want to segment leopard from background. However, intensity information is ...
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42 views

Small Font Arabic OCR character segmentation

I'm working on an Arabic OCR , it already works on font sizes 20, 30, 40 and 60 pixel height, currently I am trying to make it work on 10 pixel height, as I mentioned here before I tried first to ...
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14 views

CT image segmentation

I have two CT images reconstructed from a Shepp-Logan simulation, but they suffer leakage artifacts. Although they are distorted, the two images contain all the structure information. I was ...
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4answers
77 views

Is this image good enough for OCR?

Hello I'm trying to ocr on a special image. I've done adaptive threshold , polartocartesian transformation. this is my original image this is adaptive threshold this is polartocartesian ...
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0answers
27 views

Gap Filling Contours / Lines

I have the following image: and I would like to fill in its contours (i.e. I would like to gap fill the lines in this image). I have tried a morphological closing, but using a rectangular kernel ...
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1answer
25 views

How to choose suitable segmentation process for image processing

Hello I'm new on image processing. I know there are a lot of threshold and region growing algorithms to use. But I would like to know what is the trick for choosing suitable method for an image ? ...
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1answer
38 views

How can Recognize handwriting number [closed]

Which algorithms should use to recognize handwriting numbers from an image?
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2answers
82 views

Image Segmentation - Berkeley Dataset

I've been given an image from Berkeley dataset to segmentate. I am an undergrad student and so far I threw everything i know to this thing. But the colors are extremely close. I tried; Clustering ...
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30 views

What is the difference between Harris Corner Detection and SUSAN Corner Detection?

What is the difference between Harris Corner Detection and SUSAN Corner Detection
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24 views

Bit Plane Complexity Segmentation (BPCS)

I am working in digital image steganography. Although I am novice but implemented some of LSB substitution based steganographic methods. Now want to implement Bit Plane Complexity Segmentation ...
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19 views

Need good resources to study 'Speeded up Robust features'

My current project is about Speeded up Robust features(SURF). I am a beginner in Image processing and new to this concept. Even though i found a lot of information on Internet, i am not able to find ...
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0answers
61 views

how to get segmented OPTIC DISC from retinal image?

i have been segmented some image of retina. but the result is not good as i hope. for one image i can get good segmentation, like this image my code is from some reference in internet, in below i ...
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0answers
24 views

How do I remove the skin reflection from an ultrasound image?

I am trying to segment the fetal part from an ultrasound image. Most of the algorithms I have tried include the uterus skin reflection along with my region of interest. Is there a pre-processing ...
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38 views

Polygon Segmentation technique

I am working on Automated GUI components Segmentation problem. My Images are very simple as it has GUI components such as Buttons, text box and other polygons as you can see in the diagram (a). ...
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25 views

Some questions about the cube map representation

I am reading a text about cube map representation, but it seems I am confused. How the cube map representation can be used to detect lines using $xn_x+yn_y-d=0$? (we can ignore the polarity of lines.) ...
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44 views

Best segmentation method

This is part of my samples ...
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36 views

Normalized cut segmentation output correct or not?

I have implemented "normalized cut" segmentation. The change here is that, instead of giving an image as input, I have given an matrix of image. As my output looks odd to me. I need to know whether my ...
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2answers
136 views

how to detect corner in a digital image using MATLAB? [closed]

I am designing an algorithm for image processing. I am using MATLAB for the processing of the images(video). How I can detect the position of the corners in the image?
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68 views

Bhattacharyya distance for image segmentation explanation

I have a question need some your suggestion. I spent 2 months to resolve that problem but the result is not so good. Hence, I would like ask you some thing about my implementation. My goal is that I ...
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1answer
158 views

O(1) peak segmentation algorithm in matlab?

I have an intensity image, similar to the image below. I would like to very quickly, segment this image, into separate peaks. Where each peak is labelled, and segmented. A notional segmentation of ...
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1answer
28 views

Binary classification of grayscale image with little texture

I want to carry out a binary classification/segmentation on a grayscale image with very little texture. The only prior knowledge that's supposed to be available is that the object of interest is ...
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1answer
78 views

Image Segmentation applications

I wanna experiment k-means clustering method on different kind of images, so I am trying to find different kind of images used in image segmentation such as MRI images.I want to gather some more ...
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3answers
221 views

2D-otsu algorithm in Digital image processing

I'm working on image project using Matlab & I heard about 2D-otsu algorithm as effective segmentation with low SNR and low contrast images, but I can't find enough information about it or how to ...
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0answers
138 views

Ways to find three curves from palm image

I am asked to extract three curves from palm images. original image expected result. The curves has lower intensity than ...
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0answers
25 views

segmentation: how can I improve it?

I have written code which identifies the direction of arrow .I have used split and merge technique for segmentation ,It is sometimes stupid and I know that it is because of my predicate function which ...
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0answers
47 views

Feature selection of Gabor filter

I am working with Gabor filter with level set method here. As you known, gabor filter gave many filter output. Some of them is not necessary. Could you suggest to me some method that can choose best ...
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49 views

Problem in openCV casade classifier

I am trying to train cascade classifier using "opencv_traincascade" utility. I'm having 100 positive images and 500 negative images. I have created .vec file using following command: ...
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0answers
30 views

Best method for texture classfication

I am working in medical and nature images processing . I want to find a popular method to segment texture image. Could you suggest a popular method to do it? For example: Gabor filter, tensor...
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1answer
95 views

Comparison between average kernel and gaussian kernel?

In image processing, we have two kinds of major kernels that are average kernel and gaussian kernel. For image segmentation, which is difference between average kernel and gaussian kernel? I found ...
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1answer
62 views

How to detect a inhomogeneity region in image

I have an image that includes object and background. However, the object appears some inhomogeneity region due to illumination. My work is that how to detect inhomogeneity region. Which is feature can ...
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60 views

State of the art post processing techniques for segmented images

I've been working on grabcut-based approaches to human segmentation in images. I've combined colour, motion and face detection cues to provide some seeds and perform a grabcut. While the results have ...
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0answers
114 views

Visual regression test - Extract elements of GUI-Screenshot - MSER OpenCV

For a visual regression test I need to compare screenshots of webpages (different release-versions). I started with pixel by pixel compare. Actually I split the screenshot in different parts (maybe ...
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1answer
147 views

how to visualize image segmentation using matlab

After clustering in image, I want to visualize the result. To do so, I first reshape an RGB image to 3*size. The result of BSMC is the set of indices after clustering. So I change the value at the ...
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0answers
43 views

What is purpose of correlation kernel? IIs it high pass filter or low pass filter?

I am research about correlation kernel and I have some questions that need your help. Let see the pp. 3302-3303 in the paper: Changyang Li, et al., Robust Model for Segmenting Images With/Without ...
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1answer
45 views

How to generate an image with certain clusters using K means clustering in CIE a*b domain?

I am working on building detection from aerial images using Image Processing in MATLAB. I am doing an image segmentation based on the local homogeneity of image. I want to apply K means clustering ...
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2answers
189 views

CIELAB Color Clustering

I am trying to understand if there is an inherent advantage to using CIELAB for color-based segmentation. I segmented the cytoplasm from the image above, where the left image below is from RGB ...
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1answer
116 views

How to do Finger Tracking which is occluded by an object?

Basically I want the hand gesture recognition even when I have an object in hand by using a camera (MS Kinect) in front. My fingers are not visible directly to the camera due to the object. For ...
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0answers
39 views

State of the art in pose estimation for human segmentation from video

I'm currently working on accurate segmentation of a human from his background in video. Most of the popular approaches I've some across formulate the segmentation as an energy minimization problem, ...
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2answers
112 views

How do we distinguish between Image Recognition,Detection and Segmentation?

I am reading image processing book.while reading i am getting terms like image detection,image recognition and image segmentation. it seems that all above terms are one and the same.i am totally ...