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Nataliya


Last seen: 1 year ago |  Active since 2014

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Finding TP, TN, FP, FN using histc. First Input must be a real non-sparse numeric array (error)
I am finding TP, TN, FP, FN (confusion matrix) of predicted and actual image. smapImg is the predicted/output image and gtImg is...

5 years ago | 1 answer | 0

1

answer

Question


Detect the changes in two images
I have two images of same scene. I want to detect the object that is in 1st image but not in 2nd image. Similarly the changes th...

6 years ago | 1 answer | 0

1

answer

Question


Create narrow band of pixels under gray region
I want to create a narrow band of pixels (white pixels) neighbouring the lower side of gray region. Please see the attached imag...

6 years ago | 1 answer | 0

1

answer

Question


remove unwanted elements from color image
Hi, I want to remove unwanted small elements from color image (roughly highlighted in attached image). How can I do that? <</...

7 years ago | 0 answers | 0

0

answers

Question


Remove small elements from color image
Hi, I want to remove small elements from color image e.g. the pink and white colored particles from attached image. How can I do...

7 years ago | 0 answers | 0

0

answers

Question


Differentiate smooth and rough objects
I am trying to differentiate smooth object (as shown in left) and rough object (as shown in right). I tried solidity property fr...

7 years ago | 3 answers | 0

3

answers

Question


Select largest bounding box
I used this code to detect people peopleDetector = vision.PeopleDetector; [bboxes,scores] = step(peopleDetector,I); ...

7 years ago | 1 answer | 0

1

answer

Question


Divide histogram in three parts
Hi, I want to divide the histogram in three parts and define the ranges of three parts. minRed = min(red(:)); maxRed = m...

7 years ago | 1 answer | 0

1

answer

Question


Read pixel by pixel value from two images simultaneously
I want to get pixel by pixel value from two images at once. For example, Get 1st pixel value of both images and so on. How can I...

8 years ago | 2 answers | 0

2

answers

Question


How to remove color cast from the image
How to remove green or blue cast from the image to restore it to the original one? I have tried many techniques like color balan...

8 years ago | 1 answer | 0

1

answer

Question


Write mean square error of images in text file
I have some images and there ground truths and I want to calculate MSE of each image and write them in text file. I am evaluatin...

8 years ago | 1 answer | 0

1

answer

Question


Unable to read image.JPG file
I am getting the error Error using imread (line 349) File "E:\GT\out_of_focus0016.JPG" does not exist. How can i reso...

8 years ago | 3 answers | 0

3

answers

Question


Evaluate the quality of image using region-based precision and recall
How to evaluate the quality of image using precision and recall measures? I want to compare the segmented image against ground t...

8 years ago | 1 answer | 0

1

answer

Question


Read Image sequences in order
Hello everyone, I am trying to read the image sequences. Images are named as Img_1, Img_2,....,Img_10. I am reading the images ...

9 years ago | 2 answers | 0

2

answers

Question


Average of pixel difference from center pixel
I want to replace the value of center pixel by the average value of the pixel difference of its 3x3 neighboring pixels. How to d...

9 years ago | 2 answers | 0

2

answers

Question


Similarity level of the pixel
Hi, I want to compute the similarity of the pixel with its neighbors. Basically what I want is to assign more weights to the pix...

9 years ago | 1 answer | 0

1

answer

Question


Code Understanding Help Needed
Hello, I have some problems in understanding this piece of code. Anybody's help will be really appreciated. lambda=100; ...

9 years ago | 1 answer | 0

1

answer

Question


Object movement by estimating motion
Hello everyone, I have estimated the motion of the frame using optical flow. I want to move the object using the estimated motio...

9 years ago | 0 answers | 0

0

answers

Question


Paste the cropped region of one image to another image
Hello everyone, I have a full pendulum clock image and another cropped image (only pendulum region). I want to place that pendul...

9 years ago | 1 answer | 0

1

answer

Question


draw rectangle on extracted region
Hello everyone, I have extracted the moving region by subtracting the video frames. Now I want to draw a rectangle over the extr...

9 years ago | 1 answer | 0

1

answer

Question


Draw rectangle on optical flow points
Hello, I am detecting the moving object using optical flow. Here is the code to find the vectors of optical flow. %% Load i...

9 years ago | 0 answers | 0

0

answers

Question


Draw a box around moving object
Hello, I am detecting the moving area of an object (e.g. moving pendulum of the clock) by subtracting one frame of the video to ...

9 years ago | 1 answer | 0

1

answer

Question


Obtain trimap of the image
Most image matting algorithms need image and trimap of the image as input. My question is how to get the trimap of the image? Is...

10 years ago | 1 answer | 0

1

answer

Question


Normalized Cross Correlation for rgb image
Here is the code for to find normalized cross correlation between two images. function NK = NormalizedCrossCorrelation(ori...

10 years ago | 1 answer | 0

1

answer

Question


image intensity scale sub-divide into two ranges
I have an image. I obtain the histogram for that image and calculate probability distribution using the code below: if size...

10 years ago | 2 answers | 0

2

answers