# Naim

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Question

How can I get the histeq function to ignore NaN values?

I have a set of 2D pictures, I want to only focus on a small blob in the middle while ignoring a sea of NaNs around it If I k...

circa 4 anni ago | 2 answers | 0

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answersQuestion

Mapping a plane onto a 3D matrix?

I have an empty 256x256x56 matrix I want to project onto I have with two points of interest (156.66,114.66,32.66) and (132.33...

oltre 4 anni ago | 1 answer | 0

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answerQuestion

how can I find the furthest pair of points in a 3D binary matrix?

the 3D matrix only contains one object. I want to know which of the two '1' values are the furthest away from each other. I read...

oltre 4 anni ago | 1 answer | 0

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answerQuestion

I want to find the end point coordinates of the major axis of a 3D object?

I know how to find the major axis of a 2D object (with region props) but I'm having a hard time extending this to 3D objects. I ...

oltre 4 anni ago | 1 answer | 0

### 1

answerQuestion

extremely noise image, what are some techniques I could use to de-noise?

Inside the blue is what I want to keep. Problem is, it's so blurry that things like gaussian filters and adaptive noise-removal ...

oltre 4 anni ago | 1 answer | 0

### 1

answerQuestion

I'm using the histogram function, I would like to reduce the frequency of the y-axis

I only have 40-50 x-axis values but each y-axis value is in the 10s of thousands. I attached a file of what it looks like. I wou...

oltre 4 anni ago | 1 answer | 0

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answerQuestion

how can I fit basic shapes (circles, squares) into a binary image?

See attached image. I want to fit the largest possible square or circle into the binary image. kind of like convexhull except on...

oltre 4 anni ago | 1 answer | 0

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answerQuestion

How to remove weak edges in a binary photo?

See attached photos for reference. I tried watershedding, it breaks apart the main body and doesn't even touch the part I w...

oltre 4 anni ago | 1 answer | 0

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answerQuestion

How to best connect weak edges?

see attached photos. I want to reliably and robustly close the edges so that I consistantly get that ellipse in the middle. ...

oltre 4 anni ago | 0 answers | 0

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answersQuestion

Image segmentation: I want to get rid of ugly "branches" of a binary image

See attached photo. I want to keep the ellipse in the blue while getting rid of the roots that stick out. there are thousands of...

oltre 4 anni ago | 2 answers | 0

### 2

answersQuestion

How to check if all pixels in a large neighborhood (such as a square or triangle) are all non-zero values?

I want to check if all pixels in a 9x9 box hold non-zero values. This square is centered around a xy coordinate that I have chos...

oltre 4 anni ago | 2 answers | 0

### 2

answersQuestion

Starting with a grayscale image, how can I colour a certain pixel based on its x,y coordinates?

I have a 256 by 256 grayscale image. I want to colour a certain coordinating (say 125,125) red. Do I need to convert the entire ...

oltre 4 anni ago | 1 answer | 0

### 1

answerQuestion

How to best select height when I am using watershed?

I am building a program that isolates the largest blob in a 2D binary image, this blob always touches other objects so I want to...

oltre 4 anni ago | 0 answers | 0

### 0

answersQuestion

how to use a binary mask as a "stencil" for a grayscale image?

Hey everyone, I have a binary mask (first attached image) that I want to use to trace-out the image of a gray-scale picture ...

oltre 4 anni ago | 1 answer | 0

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answerQuestion

Is there a way to get a "thicker" bwconncomp connection?

See attached image. I have a stack of similar images and I want to remove the large white spaces on the top, bottom, and left of...

oltre 4 anni ago | 1 answer | 0

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answerQuestion

I want to dissect one black, oval-shaped part of a photo keep the contents inside

See attached photos for reference. What functionality does MATLAB have for detecting black space and zeroing in on what's inside...

oltre 4 anni ago | 1 answer | 0

### 1

answerQuestion

I want to remove small spots from a greyscale image without affecting the rest of the image

See the attached image for reference. I want to remove the white spot encircled in the image without affecting much the rest of ...

oltre 4 anni ago | 1 answer | 0