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

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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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13 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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19 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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11 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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32 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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15 views

object detection in image in matlab

I have two images ; 1. Penstand with pens. 2. Penstand with no pen is there. Now my issue is, there is any code in matlab to know: There is no pen in Penstand OR There are pens in the Penstand. ...
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1answer
20 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
65 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
35 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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26 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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1answer
55 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 ...
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1answer
37 views

1D first-order derivative mask

I'm currently reading about segmentation, and have come across finding edges in an image. I then have this image: Now, I understand how the mask used for the second-derivative works, and give the ...
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1answer
60 views

Detecting the Prescence of a “Tail”

I have a set of objects, which may be spherical or elongated, which may or may not have a tail like structure attached to one or two ends. The tail may be long or short. It may also have a curve to ...
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2answers
72 views

How can I go forward with this image processing task?

0 down vote favorite I am totally new to Image processing. I just started my Master thesis in the area of Computer vision and Machine learning. My background is Informatics. Now, my first task is to ...
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1answer
75 views

What is the Difference between Texture and Image?

I am beginner in the image processing I want to know what is difference between Texture and Image? or whether they are same? can anyone explain it. Also,if i want to do texture segmentation,can i ...
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27 views

What is weakness of entropy image

I often see that entropy is used in image segmentation area. Hence, I have a question about entropy. What is weakness of entropy image. Which case is fail when apply entropy image? Thank you so much
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1answer
38 views

Thresholding a difference image with a very high kurtosis

I have an difference image produced by substracting two images of a certain location taken a two different time steps. The resulting image of this operation shows a histogram with a very large peak ...
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1answer
66 views

Dynamic Textures

i know that texture refers to surface characteristics and appearance of an object given by the size, shape, density, arrangement, proportion of its elementary parts. But i am more interested in ...
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29 views

What are the various techniques for detecting Walls in the Building(Architectural) floor plan Images?

I have to process building floor plan images to extract Walls from the structure. It is trivial in case of binary images; but the images in our case are colored, and each have different color of ...
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20 views

Is there an OBJECT BASED Image Segmentation method, with pure non-segmented training images?

I wonder if there is a method works as follows: 1) The algorithm is trained with some images of a particular object (I train my Image with 1000 banana images) 2) I use the training data to segment a ...
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32 views

How many way to reduce overfitting problem of Linear classificationH

I am working in linear classification such as y=ax+b. where x={x1...xn}. But the method has weakness that is overfitting problem. Could you suggest to me one method or one way to reduce overfitting ...
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1answer
32 views

Linear classification and overlapping problem reduction

I am study linear classification(Y=aX+b) But it is still weakness that is overlapping problem. Could you suggest to me how to reduce overlapping problem in linear classification or how to find these ...
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22 views

How many features of given image

assume that I have a set of image and segmented image of a object in image (training set). Now, I want to measure features of object in image based on the training data. But I don't know how many ...
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2answers
84 views

OCR (optical character recognition) for Indian languages - segmentation

Can any one help me in how to extract a table from the whole document image and segment it? I have done segmentation for the document image which has only text by using the projection profile. So ...
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2answers
56 views

Color and circle detection in image

I try to detect and count circles in image (for example smarties) I use HSL color space. But I am not able to distiguish colors od the same color if they are in touch. I try to erode and dilate ...
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2answers
80 views

Matlab - Segment cell nucleus from similar background

I am trying to segment the nucleus of the cell in an image so I can extract its boundary. The nucleus and the background of the image are very similar so I am finding it difficult to do this using the ...
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2answers
107 views

Improving segmentation diffusion

I'm currently working on implementing an efficient method to segment an organ on 3D CT images. I used an algorithm (SLIC) to generate superpixels on each slice of my CT 3D matrix. The process is ...
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14 views

Please suggest me good algorithm for video segmentation based on changing background?

Iam having 1 min video.I need to cut the video into 5 segments depending on changing background.Please suggest me good algorithm which can be easily implemented in matlab.Please provide me helpful ...
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2answers
127 views

Removing marker pen artifacts from scanned microscope slide images

I am developing an image processing algorithm / plugin for Fiji (ImageJ) that processes scanned microscope slide images (20x magnification) and extracts features from the slides. The slides contain ...
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26 views

Spatial Expectation Maximization matlab

I am looking for the way to implement spatial Expectation Maximization matlab code. Because traditional EM cannot handle with noise image. Hence, I want to find improved EM matlab code. Could you ...
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1answer
122 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 ...
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2answers
82 views

How to extract the vein pattern from an IR image of finger?

I am trying to isolate (or segment to be precise) the vein pattern from Infra red image of a finger (using MATLAB) like shown below: So my output will be a binary image like (not the exact dimension ...
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44 views

The relationship between zero level set and thickness information

I have one problem that need you help. I am try to find the relationship between active contour and thickness information. For defination of thickness we can find at thickness measuring and active ...
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1answer
29 views

Input image size in MATLAB

Hi I am trying to get the image size of the uploaded image in MATLAB. So far I have got : read=imread(image.png) ymax=size(read) (1); xmax=size(read) (2); ...
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How to segment with false edge in in image?

I try to resolve false edge problem in image segmentation. Let see its defination in Figure. The false edge problem often occurs in inhomogeneity image, especially for medical image. I am finding the ...
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1answer
79 views

Counting human movement of exercise using ROI or pre-set passing line with OpenCV

I'm currently doing my final year Degree in computing studies. The project I'm working on is a video of a webcam or computer webcam to have 2 pre-defined ROI (Region of Interest) on top and bottom ...
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2answers
153 views

How to calculate the local gradient of an image in MATLAB

I know that the gradient function is supported by MATLAB, but the local gradient is not, so how do you calculate it? Local gradient is another texture descriptor, which is defined as: ...
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2answers
112 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 ...
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1answer
62 views

Best method to segment a given image

I have one image. I want to segment it by simple approach. Could you suggest to me the best method to segment it? I think one of them is gradient or FCM. But I am not sure. Please see my given image ...
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3answers
136 views

What is benefit when convert signed 16 bit to unsigned 8 bit in medical image?

I have an image with its type is 16 bit signed. I see some paper, the author often convert it to unsigned 8 bit. But they did not explain why they do it. Could you explain what is benefit of this ...
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3answers
171 views

Best way to remove unwanted region from image

I am finding the techniques to remove unwanted regions (small dots) from image. I have an image that includes object and some unwanted region (small dots- see first image). I want to remove it. Hence, ...
4
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1answer
135 views

Malaysia Flight 370 Image Processing

I wish that all those people on that flight were with us, and maybe they still are, as I like to think they are on an island somewhere waiting to us to find them ... however, it does not look good... ...
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54 views

motion detection within a poor contrast image

I have a C# desktop application. Its purpose is to detect motion changes between consecutive frames. Currently I am using the excellent Emgu wrapper to OpenCV. Now, I know this question may seem ...
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0answers
56 views

Dice Similarity coefficient for 3D image?

I am want to calculate Dice Similarity Coefficient (DSC) for 3D image. I done it for 2D. But I don't know how to apply it or change for 3D. Could you help me to find the way to calculate DSC for 3D ...
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80 views

GLOBAL THRESHOLDING using histogram

There is a recursive way of finding threshold in the image using histogram that are biomodal, and is as follows: An automated procedure for bimodal histograms : Select an initial estimate of T ...
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1answer
30 views

Active Contours

In the below link: Active Contour http://en.wikipedia.org/wiki/Active_contour_model Internal Energy of the snake is $$E_{internal}=\frac{(\alpha\,\!(s)\left | \mathbf{v}_s(s) \right \vert^2 + ...
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150 views

How do I plot color distribution of HSV image in matlab

I have a dataset of images representing human skin. How do I plot the skin color distribution in HSV color space and YCBCR color space. However, I'd like ignore the "value" or "brightness" in both ...
2
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1answer
36 views

Is there a way to evaluate block size when doing image processing or video processing

I am currently doing foreground segmentation in image sequences. A DCT 8 by 8 feature is extracted for each pixel. Now i want to explore dynamic block size for different scenes. Is there any rules ...
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84 views

Segmentation based on peak values

I have a 2D array/matrix (something like an image, but it's not an actual image) with values from 0 to X (in this case 180). and I have a 1D array/Vector that has the occurrence frequency of these ...
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1answer
47 views

oilspill extraction [closed]

I want to extract the oilspill affected areas in SAR images using thresholding, where the affected area appears as darker than surroundings. Here I am attaching the code, where I am able to extract ...