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**Content Feed**

Question

drawing on an image in loop

How can I draw on an from loop iterations, without 'imread' and 'imwrite'? EDIT: Inside the loop, I am doing some processing ...

11 years ago | 2 answers | 0

### 2

answersQuestion

Auto fill an image based on edge line

Is there a way to automatically fill an image (as though using the paint bucket tool in Photoshop) based on a line that runs fro...

11 years ago | 2 answers | 0

### 2

answersQuestion

Analyse the "Gibbs Phenomenon" from Image Data

Slightly related to my previous post regarding the ringing artifact in compressed images, I have a question regarding the Gibb's...

11 years ago | 0 answers | 0

### 0

answersQuestion

Image data as a sine wave?

Does anybody know if it is possible to represent image data as a sine wave?

11 years ago | 1 answer | 0

### 1

answerQuestion

What statistical features can I use to distinguish these images?

I have two 25x25 pixel images that are quite similar: A: http://imageshack.us/photo/my-images/546/18lwin.png/ B: http://imag...

11 years ago | 0 answers | 0

### 0

answersQuestion

'closeness' of multiple vectors

Is there a way to compute how 'closely' a data vector matches another? For example: A = [1 2 3 4 5]; B = [1 2 3 4 5...

11 years ago | 1 answer | 0

### 1

answerQuestion

Find smallest cell in cell array

Is there a way to find the smallest sized cell in a cell array? Thanks!

11 years ago | 1 answer | 0

### 1

answerDump Image Pixels into vector from coordinates

On a similar note, is there any way that I can replace the following loop: label_ids = [1 3 11 24 55]; map = zeros(heigh...

11 years ago | 0

Question

Dump Image Pixels into vector from coordinates

Is there a way to use 2 vectors of pixel coordinates to quickly dump the pixel values into a 3rd vector? Currently, I am usin...

11 years ago | 3 answers | 0

### 3

answersQuestion

Image Edges: Calculate complexity of a line segment?

Can anyone suggest a good way to calculate the 'complexity' of a line segment (obtained from 'bwlabel' after 'canny' edge detect...

11 years ago | 3 answers | 0

### 3

answersQuestion

Image Processing: Near/Far Objects

Does anyone know of any techniques that make it possible to work out how close an object is to the camera (when the image was ca...

11 years ago | 1 answer | 0

### 1

answerQuestion

Canny Edge Detection - Automatic/Adaptive Thresholding

I have read in the docs for the 'edge' function that when a low and high threshold are not defined when calling the 'canny' edge...

11 years ago | 4 answers | 1

### 4

answersQuestion

Sobel Edge Thresholds

I would like to test several sobel edge threshold values to identify which threshold is the best suited to a particular task... ...

12 years ago | 3 answers | 0

### 3

answersQuestion

Change how this plot looks

Is there a way to modify the attached plot in MATLAB, such that it contains another y-axis on the right hand side called "ADR" (...

12 years ago | 1 answer | 0

### 1

answerQuestion

Extract all red pixels from image to binary image

Does anybody know of a way to extract all 'red' values [255 0 0] from an image to make a binary image where 1's indicate the loc...

12 years ago | 2 answers | 1

### 2

answersQuestion

Dilate a line and color both sides

Does anyone know if it's possible to dilate a line in an image, such that one side of the original line is colored red, and the ...

12 years ago | 2 answers | 0

### 2

answersQuestion

Create new binary image from pixel values of another image

I have a grayscale uint8 image, and I want to create a second image that is mostly zeros, but has a 1 wherever the pixel value i...

12 years ago | 3 answers | 1

### 3

answersQuestion

Dictionaries of Hashtables in MATLAB?

Hi all, Is there a way to create a hash table or dictionary in MATLAB such that I can retrieve a set of values based on a key...

12 years ago | 2 answers | 0

### 2

answersQuestion

Draw a straight line in image, given an angle

Is there a way to draw a straight line in an image from a starting (x,y) coordinate, such that the line is equivalent to a speci...

12 years ago | 2 answers | 0

### 2

answersQuestion

Rotate image about a specified pixel coordinate

Does anyone know of a way to rotate an image about a specified pixel coordinate? If I have the pixel coordinates (50,55) for ex...

12 years ago | 2 answers | 0

### 2

answersQuestion

Normal vector of line based on pixel coordinates

I have an array that contains the x,y pixel coordinates of edges in an image. I want to use three of these coordinates at a tim...

12 years ago | 2 answers | 1

### 2

answersQuestion

Image Processing: Break straight lines

I have an edge image of a square, and would like to treat it as 4 separate lines: 2 horizontal and 2 vertical. Is there a way t...

12 years ago | 2 answers | 0

### 2

answersQuestion

sort a structure

Is it possible to create a structure that holds the following information: * id_number * length such that I can then sort...

12 years ago | 1 answer | 0

### 1

answerQuestion

Image Processing: Find nearest nonzero pixel value to specified pixel coordinates

Is there a way to find the closest non-zero pixel value to specified x,y coordinates of an image by shifting only the horizontal...

12 years ago | 1 answer | 0

### 1

answerQuestion

Image Processing: Find Edge with Highest Contrast

Is it possible to scan an image to find only the edge with the highest dynamic range to its left and right. At first I want to ...

12 years ago | 2 answers | 0

### 2

answersQuestion

Image Processing: Keep only highest "intensity" values

Does anyone know of a way that I can reduce the following image to an image that only includes the highest intensities (for want...

12 years ago | 1 answer | 0

### 1

answerQuestion

Stop exponential answers

Dear all, I have two values representing the max and min of a data vector. max_val = 0.9855; min_val = 0.9851; Bot...

12 years ago | 3 answers | 3

### 3

answers"Fill" Binary Image

Thanks for your help! I really must read the literature for morphological operations... The erode and dilate methodology seems...

12 years ago | 0

Question

"Fill" Binary Image

Hi, Is there a way to "fill" a binary image such that textured regions become black? As an example, I would like to make thi...

12 years ago | 3 answers | 0

### 3

answersQuestion

Edge direction

Is there a function to check if an edge changes direction? I have used bwlabel to work on connected edges, but now I only w...

12 years ago | 1 answer | 0