Hg

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Detect watermark text if exists
Hi I would like to remove images that contains watermark text. Is there any simple way to check whether there's a watermark in t...

4 years ago | 0 answers | 0

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answers

Question

Character for "ENTER"
I want to break a loop by pressing ENTER key. What character does ENTER key represent? while (1) if strcmp(get(gcf,...

7 years ago | 1 answer | 1

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answer

Question

Motion trajectory of an occluded object
How to find the motion trajectory of an object which is partially occluded in a video sequence? For example in the 2 frames belo...

8 years ago | 0 answers | 0

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answers

Question

Convert type while keeping values
How to convert the type of an array while keeping the value of all elements? For example, A = [200 150 30] in uint16 to B = [20...

8 years ago | 1 answer | 0

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answer

Question

How to add images to data points
How do I add images to data points just like adding text? labels = [1:2] c = cellstr(num2str(labels)); gscatter(X, ...

8 years ago | 1 answer | 0

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answer

Question

Reduce data dimension using PCA
pca() outputs the coefficient of the variables and principal components of a data. Is there any way to reduce the dimension of ...

8 years ago | 1 answer | 0

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answer

Question

Execute a list of functions
How do I store a list of user-defined function in an array and execute it in a loop one by one? [d] = func1(a), [e] = f...

8 years ago | 2 answers | 0

2

answers

Question

Unable to Install OS Generic Video Interface Support Package
Matlab version: R2015b (student version) with Image Acquisition Toolbox installed Running Matlab on Windows 8.1 (Windows To ...

8 years ago | 0 answers | 0

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answers

Question

Showing Matlab output command on Visual Studio using Matlab Engine
I use Matlab engine to run below matlab script on Visual Studio. % test.m for i=1:30 fprintf('i = %d\n', i); ...

8 years ago | 0 answers | 0

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Question

Array of 1 and 0 to decimal
How to convert array with 1's and 0's (array A) to decimal (array B)? A = [1 0 0 1 0 0 1 1; 0 0 0 0 1 1 1 1; 1 0 1 0 1 0 1 ...

8 years ago | 2 answers | 0

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answers

Question

Rotation of orthogonal projection
I have a depth image (x,y,z = pixel value). I project the image into top and side views: for i = 1:rows for j = 1:cols...

8 years ago | 0 answers | 0

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answers

Question

Number of non-zero element
I have n-number of arrays, I want to find the total non-zero element at a location. For example there are three arrays as follow...

8 years ago | 1 answer | 0

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answer

Question

Depth Image Segmentation Using Depth Threshold
Depth threshold can be used to extract a foreground (e.g a hand) when there's a gap between a foreground and it's background. In...

8 years ago | 1 answer | 1

1

answer

Question

Foreground Detection Using GMM on Depth Images
I used vision.ForegroundDetector() to detect foreground on RGB video frames. The input of step() is from the vision.VideoFileRea...

8 years ago | 1 answer | 0

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answer

Question

Intersect() Problem when none of the pixels overlap
When I used intersect() to find the intersection between A (red) and B (blue), I failed to get any because the pixels don't over...

9 years ago | 1 answer | 2

1

answer

Question

Removal of noises at edges (2)
How can I get rid of the unwanted pixels circled in red in the image below? <</matlabcentral/answers/uploaded_files/43196/arm...

9 years ago | 1 answer | 0

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answer

Question

Removal of noises at edges
I have a grayscale (value 0-255) image with background pixel equals 0. I am trying to remove noises at the border between the fo...

9 years ago | 2 answers | 0

2

answers

Question

Padding border of a non-uniform region with a value
I would like to add one-pixel padding to the border of a non-uniform region. Instead of looping each pixel and check its 8-pixel...

9 years ago | 0 answers | 0

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answers

Question

Separate region by an equation
How to separate a region by an equation. For example I want to find the region greater than the equation y = mx + c. <</matla...

9 years ago | 0 answers | 0

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answers

Question

Normalize image orientation and scale
I want to normalize the orientation and scale of these images before I do a similarity measure. How can I achieve this using PCA...

9 years ago | 1 answer | 0

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answer

Question

Find turning point in data
How to get data gradient and how to locate significant changes of the gradient? I'm trying to locate the first "turning point" o...

9 years ago | 1 answer | 0

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answer

Question

Counting pixel at an angle without rotating image
How to count the pixels along the line (red) that is perpendicular to the major axis (blue) of a region, without rotating the im...

9 years ago | 1 answer | 0

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answer

Question

How to get a region from points
Below is a scatter plot from array that I get using boundary(). How can I get a region so that I can use regionprops() to find t...

9 years ago | 1 answer | 0

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Question

Exclude last sample as peak despite being the maximum
The first sample is excluded despite being the maximum in findpeaks(). How to exclude the last peak? <</matlabcentral/answers...

9 years ago | 1 answer | 0

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answer

Question

Minimum y-value in each column
How to find the first y value (in red) efficiently in each column of the image below? <</matlabcentral/answers/uploaded_files...

9 years ago | 1 answer | 0

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answer

Question

The fastest way to find local minimum
What is the most efficient/fastest way to find the circled local minimum below, the lowest minima between two highest peaks? The...

9 years ago | 1 answer | 0

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answer

Question

Finding Special Feature in 3-D points
I have 3-D points data as following. Could you suggest a way to locate the two features circled? I can use regression and dy/dx...

9 years ago | 0 answers | 0

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answers

Question

Reading a huge text file using Textscan()
I have a .txt file with 3235K number of lines, and 25 space delimited columns. I use the following code to read the file: ...

9 years ago | 1 answer | 0

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answer

Question

Random pick data by label
I have a data array (13x5). The last column is the class (1-4) of each data. How do I randomly pick n-number of data from each c...

9 years ago | 1 answer | 0

1

answer

Question

Separate a blob into multiple regions
Is it possible to separate a blob into multiple regions and find out the centroid and major axis of each region? <</matlab...

9 years ago | 1 answer | 0

1

answer

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