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Raunak Gupta


Last seen: 1 day ago

MathWorks

355 total contributions since 2019

I am an Application Support Engineer in the EDG Group, The MathWorks.
My Area of Interest are MATLAB, Deep Learning and Image Processing.

DISCLAIMER: Any Advice or opinions here are my own, and in no way reflect that of MathWorks.

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Answered
Find zeros in one variable and mark it in another one
Hi, Since blinks is a matrix, you need to give both indexes while accessing any row and column. Since that would be the correc...

21 days ago | 0

| accepted

Answered
Recurrent Neural Networks Primer
Hi, There are two ways you can use recurrent neural networks. If you want to use shallow network which have less complexity,...

21 days ago | 0

Answered
To create a mak for an image
Hi, For generating mask for large amount of data you need to have good amount of labeled data in which you correctly mention t...

25 days ago | 0

Answered
What Kind of Pre-processing is required for images for transfer learning and training AlexNet?
Hi, There are several preprocessing techniques which can be used for preparing data to pass to a network for transfer learning...

25 days ago | 0

| accepted

Answered
problem using for loop
Hi, Since Corners variable is a matrix, length is probably not the correct function to get the number of elements in particula...

25 days ago | 0

Answered
Calculation of probality numbers from "matrix/array"
Hi, You can count number of element equal to a particular number in a vector/matrix using nnz and equality condition. For abov...

25 days ago | 1

Answered
Mathematical model extraction from NARX net?
Hi, The mathematical model will be very complicated for 15 hidden layers and that too for Non-linear modelling that is being d...

27 days ago | 0

Answered
Size of coeff in PCA example is not correct
Hi, The vector you are seeing in your result is the component wise variance of each principal component. I tried the same exam...

27 days ago | 0

Answered
Partially labelled semantic segmentation
Hi, Assigning zero class weight to unlabeled pixel will help in removing them from loss calculation during training however wh...

27 days ago | 0

| accepted

Answered
How to replace imageInputLayer with sequenceInputLayer in imported Tensorflow Keras network
Hi Lucas, From the error message it is evident that the inputLayer in your code must contain a valid name (any character array...

27 days ago | 0

| accepted

Answered
xlim and ylim for contourf
Hi, The axis equal command after xlim and ylim squeezes one of the axis limits to fit the figure box into minimum space. This ...

28 days ago | 0

| accepted

Answered
Detecting droplets in an image
Hi, There are two image processing methods that can be useful for doing this. You can use regionprops for finding the connecte...

28 days ago | 0

Answered
How to change imgae in imageLabelingSession.mat file
Hi, I assume after doing the labeling you have exported the labels as a groundTruth object. The groundTruth object contains th...

28 days ago | 0

Answered
understanding forecasting code in matlab
Hi, The default method used by the optimoptions mentioned in the code is linprog which is to solve linear programming problems...

28 days ago | 0

Answered
Solving Maxwell's Equations in a 1D
Hi, I am not sure about a full example on Maxwell’s equation but for the query of gradient, curl and divergence of a vector fi...

28 days ago | 0

Answered
Data fitting- Fitted coefficient 'fixed at bound'
Hi, The possible Name Value pair you may change is “DiffMinChange” which signifies the minimum change that will happen between...

28 days ago | 0

Answered
why psd result estimated by fft is related to frequency resolution?
Hi, The power spectral density estimate shown in each T=1,10,100,1000 is correct as it shows a peak around 100 Hz which exactl...

28 days ago | 0

Answered
Preprocessing EEG and EMG
Hi, These following File Exchange submissions are related to preprocessing EEG and EMG data separately. SSVEP-EEG Signal Pro...

30 days ago | 1

Answered
Code keeps on running. Neither shows error nor gets executed.
Hi, From the code I see the differential equation after the “set1 over” comment is dependent on variables gln(t) and glc(t). S...

30 days ago | 0

| accepted

Answered
Deep Learning Toolbox MLP
Hi Shathesh, The predict function will return the scores corresponding to each class for a particular test image. So, the high...

2 months ago | 0

Answered
How do I compare two images and find the similarity percentage?
Hi Parth, For finding structural similarity index between two images you can use ssim function. If there is translation and ro...

2 months ago | 0

| accepted

Answered
Activations differ with increased number of input.
Hi, I tried to reproduce the same with Example mentioned here which uses Alexnet and MerchData. The percentage error calculate...

2 months ago | 0

Answered
Optimizing percentage split of CNN training/test data
Hi Holly, Since the percentagechange is accurately defined in the code for Bayesian optimization I don’t see any issue there. ...

2 months ago | 0

Answered
why is my final validation accuracy much lower than the validation accuracy during training?
Hi, This can happen due to presence of batchNormalizationlayer in the Layer graph. Since in batch normalization layers the mea...

2 months ago | 0

Answered
Generate factorized transfer function using expression
Hi, In zpk function you can substitute the zeros, poles and gain value and it will give the desired expression. You may find b...

2 months ago | 0

Answered
I want to find cross correlation of two different sequence without using inbuilt xcorr function. It has to be less time consuming than xcorr.
Hi, xcorr has been written very efficiently to have maximum performance in terms of time taken. If you want to look out for an...

2 months ago | 0

| accepted

Answered
Merging 10 tif files into one in order to get spectral signatures
Hi Melisa, You can read the TIFF files one by one and assign them to a matrix in the 3rd dimension. Since you want to merge th...

3 months ago | 0

Answered
how calculate cross correlation without use corr
Hi, As KSSV mentioned, Cross-correlation is one of the submissions on File Exchange which doesn’t uses xcorr for calculating c...

3 months ago | 0

Answered
Deep Learning LSTM sequenceInputLayer - Data normalization on Test Data?
Hi Barry, The normalization is applied on every batch of the data that passes through any particular data input layer whether ...

3 months ago | 1

| accepted

Answered
Adaboost Learning Rate in Matlab Documentation
Hi, The LearnRate option in AdaBoostM1 tells about the learning rate of shrinkage which is essentially the shrink in contribut...

3 months ago | 0

| accepted

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