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Anand


MathWorks

194 total contributions since 2013

Professional Interests: Image Processing, Computer Vision

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Answered
How to remove custom algorithm on Ground truth app?
If you remove the folder contain the example and press "Refresh List", that should delete it. If that does not delete the algori...

5 months ago | 0

Answered
RRT* Planner and Driving Scenario Generator
The pathPlannerRRT implements a version of the RRT* planner. This may not directly suit your needs, but will get you started. ...

5 months ago | 0

Answered
Automated driving system toolbox ground truth labeler app - can attributes be labelled automatically as well?
James, Yes, it is possible to automate attributes as well, but this isn't available out of the box. Here is an example showing...

10 months ago | 0

| accepted

Answered
how to set projection of point cloud visualization?
You need to use the axes of the pcplayer object. For example, % Create a pcplayer viewer player = pcplayer([0 1], [0 1], [0 1...

10 months ago | 0

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Answered
Undefined function or variable 'validateBoundaryFcn'.
The |'ValidateBoundaryFcn'| parameter needs to be a function handle that returns a logical true or false allowing you to choose ...

1 year ago | 0

Answered
What is the best toolbox to use for autonomous vehicles that can import GPS data?
The answer depends on your source of GPS data. For example, if the data is coming from a GPX file, you can use the <https://au.m...

1 year ago | 0

Answered
Obtain vehicleCostMap from drivingScenario
There is no direct ability to do this. There are two ways to accomplish this however: # Create a 2D matrix with the values in...

1 year ago | 0

Answered
How do I edit a gTruth object if I mislabelled the label?
Here is some pseudo-code to help anyone else who wants to do this. % Load old groundTruth MAT file load oldGTruth; ...

1 year ago | 1

Answered
Warning using bwareafilt: "Some objects were not selected"
This typically means there were 2 or more objects with the same area, i.e. a tie. So |bwareafilt| had to pick some and leave out...

2 years ago | 0

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Answered
Remove SURF points according to scales
% Read an image I = imread('cameraman.tif'); % Compute SURF features points = detectSURFFeatures(I); % Fil...

3 years ago | 0

Answered
How to implement GoogleNet as a Series Netwok?
MATLAB as of R2016b does not support non-series networks. This will be part of a future release. GooleNet is not a series ne...

3 years ago | 0

Answered
Help in building content based image retrieval system
If you have access to the Computer Vision System Toolbox, there is a set of functions that supports CBIR. This is a good exam...

3 years ago | 1

Answered
Image batch processing on external drive
When you use |imwrite| to write your images, just specify file path names that are on the external drive.

3 years ago | 0

Answered
How to manually change the ObjectTrainingSize in trainCascadeDetector for training larger patches?
If you are training using the |trainCascadeObjectDetector| function, you can set the |'ObjectTrainingSize'| parameter during tra...

3 years ago | 0

Answered
Computer Vision and GPU Acceleration for new laptop selection
The Computer Vision System Toolbox itself does not support too many functions on the GPU. The workflows that require GPU computi...

3 years ago | 0

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Answered
Is there any way that can show the performance of Cascade Object Detector ?
I presume you're using |vision.CascadeObjectDetector| and not |trainCascadeObjectDetector| for detection. The |trainCascadeObjec...

3 years ago | 1

Answered
Is it possible to change color for the plot function in opticalFlow class?
Unfortunately, this can't be done directly. You need to find a handle to the underlying quiver plot and modify it. Here's some c...

3 years ago | 2

| accepted

Answered
Hi, is it possible to implement a customized bagOfFeatures with a SIFT extractor? and detector?
If you can upgrade to a later version (R2015a or higher), you can use the |'CustomExtractor'| name-value pair to do this. Unfort...

3 years ago | 1

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Answered
How to draw histogram of hsv image?
If you need the histogram only for visualization purposes, you can obtain it using the <http://www.mathworks.com/help/images/ref...

3 years ago | 1

Answered
help me solve this error detectSURFFeatures
What does |class(I)| return? If it does not return one of the following, your image is not of the right type: |'logical', 'u...

3 years ago | 0

Answered
How to merge overlapping bounding boxes into one?
You could do something similar to what the |MergeThreshold| option in |vision.CascadeObjectDetector| does. The algorithm used is...

3 years ago | 1

Answered
How to match the same object in two different images using Harris corner
This is essentially what you are asking for: <http://www.mathworks.com/help/vision/ref/matchfeatures.html matchFeatures> Look...

3 years ago | 1

Answered
Train a HOG detector for detecting heads (not face) or people (not upright)
Do you need to train a detector for this? I would suggest trying to use an adaptive background subtraction technique to esti...

3 years ago | 1

Answered
Radius and coordinates of the center for a big circle in a bidimensional image
You can use the awesome <http://www.mathworks.com/help/images/ref/imfindcircles.html |imfindcircles|> function to do this as wel...

3 years ago | 0

Answered
human detection in a room
Can you say more about what you've tried - what worked and what didn't work? It looks like you need to try a combination of...

3 years ago | 0

Answered
Can we rotate sobel operator and still get the same results for gradient image
The |imgradient| function uses the following kernels for the |'sobel'|: hx = -fspecial('sobel')' hx = -1 ...

3 years ago | 1

Answered
OCR low-res image from specified set of characters
This exact functionality is available in the <http://www.mathworks.com/help/vision/ref/ocr.html#inputarg_CharacterSet |ocr|> fun...

3 years ago | 3

Answered
Level set segmentation for retina images
Try your luck with the |activecontour| function. It uses a level-set based segmentation algorithm. For a more detailed answe...

4 years ago | 0

Answered
I am converting a grayscale signature image to thin image but not getting the desired output
It looks like you need to clean up the binary image a little before thinning. This worked for me: bw = im2bw(img,graythr...

4 years ago | 0

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