# Preetham Manjunatha

### University of Southern California

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**Content Feed**

How to calculate the curvature of a boundaries in binary images?

Here this function measures the curvature and other shape properties. In addition, it displays the curvature. Here is the T-...

3 mesi ago | 1

How to measure the curvature of object boundary?

Here this function measures the curvature and other shape properties. In addition, it displays the curvature.

3 mesi ago | 0

Question

Memory problem when accessing and copying the 3D array elements by subscripts

I am trying to access/copy values from an image 3D array to another 3D array using the subcripts (rows and columns). I am trying...

3 mesi ago | 1 answer | 0

### 1

answerQuestion

Cylindrical projection from image normal coordinates

I am trying to project normal image coordinates to cylindrical projection using the MATLAB's imwrap function. But the output...

3 mesi ago | 0 answers | 0

### 0

answersQuestion

How to use the MATLAB Computer Vision toolbox's bundle adjustment for automatic panoramic image Stitching?

I am trying to implement automatic panoramic image stitching as in the Panorama. I have obtained the connected components of the...

3 mesi ago | 0 answers | 0

### 0

answersHow Do I Move a Set of (x,y,z) Points so they Align with the X-Y Plane?

Fit a oriented bounding box and obtain the orientation of that bounding box and invert the rotation matrix of the Euler angles. ...

3 mesi ago | 0

how to fit a plane to my point cloud data and rotate it so that the plane is parallel to the x-y plane.

Fit a oriented bounding box and obtain the orientation of that bounding box and invert the rotation matrix of the Euler angles. ...

3 mesi ago | 0

Question

How to linearize the nested parfor loop?

I have two variables i,j, where j index start depends on i index. n = 3; for i = 1:n for j = i+1:n % Feature mat...

3 mesi ago | 1 answer | 0

### 1

answerQuestion

Find unique images from a folder

I have a folder full of images of video frame sequences of same class of varying sizes of frame number extracted from a large vi...

8 mesi ago | 1 answer | 0

### 1

answerQuestion

Machine learning model (neural network or SVM) for unequal feature matrices size

I have feature matrices obtained from visual bags of words model for various dictionary sizes. Example, Nx5, Nx10, …., Nx15000. ...

8 mesi ago | 0 answers | 0

### 0

answersQuestion

How to convert MATLAB binary feature matrix to decimal?

I have binary feature matrices from BRISK, FREAK and ORB descriptors with 512 number of bits. I tried to use: d = bi2de(featu...

10 mesi ago | 1 answer | 0

### 1

answerQuestion

Bar3 plot increase bar thickness

I am trying to plot the stacked bar3 plot. How to increases the thickness of the bars? All the bars look flat. I need something ...

circa un anno ago | 1 answer | 0

### 1

answerQuestion

MATLAB parfor index exceeds the number of array elements

Why MATLAB throws an error even if it shouldn't go to the first case of the switch statement? Below is the minimal example: myc...

circa un anno ago | 1 answer | 0

### 1

answerQuestion

GPU-based anisotropic filtering of grayscale images

There are quite a number of contribution on sequential anisotropic diffusion filtering. Are there any GPU-based parallel anistro...

oltre un anno ago | 1 answer | 0

### 1

answerQuestion

MATLAB sgtitle overlapping with the title of the subplots

When I use the subplots with group title (sgtitle), the title of subplots on top are overlapping with the group title. Does anyo...

circa 2 anni ago | 1 answer | 0

### 1

answerQuestion

How to set point cloud transparency?

Suppose I have aligned two point clouds, how can I set transparencies for each point clouds? I tried with the below lines: src_...

circa 2 anni ago | 1 answer | 0

### 1

answerQuestion

Matlab figure(s) suppression not working

Hello: I have some issue suppressing the figure(s) in Matlab. I referred to these solutions <https://www.mathworks.com/matlab...

oltre 3 anni ago | 2 answers | 0

### 2

answersQuestion

Overlay imagesc on binary image

Hi Matlab users: I am trying to overlay an imagesc image on top of a binary image. I searched for it online, but no luck. Bel...

oltre 3 anni ago | 0 answers | 0

### 0

answersQuestion

Neural network for bags-of-visual-words giving a pretty bad training/testing results.

Dear All: I created a feature matrix using (encode, bagOfFeatures functions) visual-bags-of-words using computer vision toolb...

circa 4 anni ago | 0 answers | 0

### 0

answersQuestion

Visual bag-off-features evalute vs. fitcecoc classification results are very different

Dear All: I have few questions regarding vision toolbox's visual bags-of-features class. Firstly, I have a feature matrix cre...

circa 4 anni ago | 0 answers | 0

### 0

answersQuestion

Issue with getframe and getimage commands while saving the image (image size mismatch).

Hello: I have an issue while using getimage() command. I am trying to use a figure, first with imshow to initialize a color ima...

circa 4 anni ago | 1 answer | 0

### 1

answerQuestion

How to train a classifier and test it separately?

Good day, I have a beginner experience in using the Matlab, Neural Network Toolbox. My question is: I have some N x 22 featur...

oltre 7 anni ago | 1 answer | 0