Question


How do I find and how do I change the starting point of the active contour?
Hi I use the below code for automated segmentation. It is granted, that every time the circular active snake contour will sta...

1 year ago | 0 answers | 0

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Question


How to ideally erode this line?
Hi See attached image. Imagine, it is a line of a contour. I need to erode it to a point to be a nice clear curve with no ...

1 year ago | 0 answers | 0

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Question


I need to chose between two images for postprocessing using uibuttongroup. Why is not working?
I have two images as Option 1 and Option 2. How to make it run and user be able to chose among the two images? Is it corr...

1 year ago | 1 answer | 0

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answer

Question


Are those spikes in the excel graph error and needs to be sorted?
Hi I attach a segmented image done in Matlab and an excel graph related to that image (and other images in series). What M...

1 year ago | 0 answers | 0

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Question


How to make an interactive panel for the user to chose among several options
Hi I want to have a panel (User Interface) with 3-4 different cropping image options and the user shall be able to chose the ...

1 year ago | 1 answer | 0

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Question


Is it the same when we say dpi (dots per inch) as pixels per inch?
Hello See question line. Are they equivalent terms? How someone can determine whether the image is appropriate for printing w...

1 year ago | 0 answers | 0

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Question


What is this error about?
Hi I am trying to use an active contour and I get the error Error using contour (line 46) Input arguments for contour must ...

1 year ago | 0 answers | 0

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Question


How to have a user prompt window to submit real time values
Hi I am using a Local Gaussian Distribution algorithm to auto segment some images. This algorithm contains a few parameter...

1 year ago | 2 answers | 0

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answers

Question


What is this error I get?
Hi I am using an evolution Local Gaussian Distribution active contour for automated segmentation and I get this error: Subscri...

1 year ago | 1 answer | 0

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Question


Why I get this error of matrices not consistent? What's wrong?
I am trying to use that code message = ({'Welcome, XXXXXXX';'I hope to Enjoy it' ; 'Please, share it' ; 'Cheers!'}); myicon ...

1 year ago | 1 answer | 0

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Question


How to remove a percentage of image counting from the bottom to top
Hi I want to subtract a portion of image (e.g. 30% of it from the top). How do I do that? If I do, something like this, ...

1 year ago | 1 answer | 0

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Question


How can I make an auto cropping command
Please, see the two images I attach. They are actually the same images, but the one is cropped at the middle of the imaging w...

1 year ago | 1 answer | 0

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Question


Matlab needs to calculate distance and find pixel size
Hi, I need to do image calibration between two known points on an image. Let's say that we have those two points [130,799] an...

1 year ago | 1 answer | 0

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answer

Question


How to make it expand vertically?
Please, see the image I attach. Imagine the middle rectangle to be an active contour. Is there a way programmatically to make...

1 year ago | 0 answers | 0

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Question


How do I segment the square inside the square?
Hi How do I segment the square/rectangle inside the square image. All the rest should be masked. I want only the gray square ...

1 year ago | 0 answers | 0

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Question


Scan the image until the first and last points I set
Hi Matlab community. I need your valuable help on this. Please see attached image. I annotate the starting and end point of s...

1 year ago | 1 answer | 0

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Question


Matlab is not properly working on Macbook (MacOS Sierra)
Hi I am trying to transit my work from Windows pc to Macbook. The problem is that in my Macbook, the folder that Matlab "sees...

1 year ago | 0 answers | 0

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Question


Suggestion of how to deal with artefacts
Hello Please, see attached image. At the top boundary area, there is an artefact that prohibits the active contour to take a...

1 year ago | 1 answer | 0

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answer

Question


Why images dimensions goes up when cropping it
I enclose two images. Both are the same image. The original ('A1b.jpg') has the beggining point of the imaging window at [136...

1 year ago | 1 answer | 0

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answer

Question


How to trace the first red pixel?
Hi I have this image (see attached). I want to sum all pixels for certain columns. The user should be able to determine manua...

1 year ago | 0 answers | 0

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Question


How to export xls file from Matlab
Hello I use this code to get the sum of pixels for a certain area of an image for col = col1 : col2 row2 = find(mask(:, ...

1 year ago | 1 answer | 0

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answer

Question


How to sum (row,col) until the first red pixel
Hi Any ways to use the sum() command in an image, in a way to scan the whole image until it finds the first red pixel where it ...

1 year ago | 1 answer | 0

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answer

Question


Why my plot comes out jaggy when it shouldn't
First of all, let me apologize in case, some of you, find my questions as duplicates. They are actually not. Sometimes, I start ...

1 year ago | 0 answers | 0

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Question


How to sum pixels of a certain area and put a point to stop
Hi I want to sum all pixels of a certain area of the image and the summation will go on (vertically) until it finds the firs...

1 year ago | 1 answer | 0

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answer

Question


How to sum and plot all pixels of an area in image and plot them?
A new aproach and a NEW question of my previous query. What I actually want to achieve is to get for every column of the image...

1 year ago | 2 answers | 0

2

answers

Question


How to turn pixel values to mm on axes
Hello As far as I know, Matlab plots give X,Y in pixel values. How do I turn them to units of length? E.g. milimeters? mm. I ...

1 year ago | 2 answers | 0

2

answers

Question


Segment Image based on Color pixels.
Hello. I enclose an ultrasound image of mine. I want to segment the red contour. So I need a code to trace and segment the red ...

1 year ago | 1 answer | 0

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Question


Spatial Calibration tool recommendation
Hello. I need to turn pixel values to length values. Any calibration tool suggested for this purpose? Thanks in advance

1 year ago | 0 answers | 0

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Question


Suggestions for processing DICOM images
I have a series of DICOM images that I need to segment. The problem is that they have a lot of despeckle noise and same intensit...

2 years ago | 1 answer | 0

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Question


How do I define an initial rectangular active contour shape under specific dimensions?
Hi So far, I have used active contours like region_seg or activecontour commands. They usually start with a circular shape wh...

2 years ago | 0 answers | 0

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