Hg
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Feeds
Question
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...
mer än 3 år ago | 0 answers | 0
0
answersQuestion
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,...
mer än 7 år ago | 1 answer | 1
1
answerQuestion
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...
mer än 7 år ago | 0 answers | 0
0
answersQuestion
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...
mer än 7 år ago | 1 answer | 0
1
answerQuestion
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, ...
mer än 7 år ago | 1 answer | 0
1
answerQuestion
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 ...
mer än 7 år ago | 1 answer | 0
1
answerQuestion
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...
mer än 7 år ago | 2 answers | 0
2
answersSolved
Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...
nästan 8 år ago
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 ...
nästan 8 år ago | 0 answers | 0
0
answersQuestion
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); ...
ungefär 8 år ago | 0 answers | 0
0
answersQuestion
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 ...
mer än 8 år ago | 2 answers | 0
2
answersQuestion
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...
mer än 8 år ago | 0 answers | 0
0
answersQuestion
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...
mer än 8 år ago | 1 answer | 0
1
answerQuestion
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...
mer än 8 år ago | 1 answer | 1
1
answerQuestion
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...
mer än 8 år ago | 1 answer | 0
1
answerQuestion
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...
mer än 8 år ago | 1 answer | 2
1
answerQuestion
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...
mer än 8 år ago | 1 answer | 0
1
answerQuestion
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...
mer än 8 år ago | 2 answers | 0
2
answersQuestion
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...
mer än 8 år ago | 0 answers | 0
0
answersQuestion
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...
mer än 8 år ago | 0 answers | 0
0
answersQuestion
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...
mer än 8 år ago | 1 answer | 0
1
answerQuestion
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...
nästan 9 år ago | 1 answer | 0
1
answerQuestion
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...
nästan 9 år ago | 1 answer | 0
1
answerQuestion
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...
nästan 9 år ago | 1 answer | 0
1
answerQuestion
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...
nästan 9 år ago | 1 answer | 0
1
answerQuestion
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...
nästan 9 år ago | 1 answer | 0
1
answerQuestion
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...
nästan 9 år ago | 1 answer | 0
1
answerQuestion
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...
nästan 9 år ago | 0 answers | 0
0
answersQuestion
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: ...
nästan 9 år ago | 1 answer | 0
1
answerQuestion
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...
nästan 9 år ago | 1 answer | 0
1
answer
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