Sourav Bairagya
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Contribute at least one answer each month for 3 consecutive months
Awarded to Sourav Bairagya on 04 Mar 2020
Answer 3 questions that were unanswered for more than 30 days
Awarded to Sourav Bairagya on 08 Jan 2020
20 of your answers have been accepted
Awarded to Sourav Bairagya on 28 Dec 2019
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Feeds
What and where is the grid size of YOLOv4 detector in Matlab?
Hi, In YOLOv4 object detector, the grid sizes depend on the detector input size. Hence, to change the grid size, you need to ch...
2 years ago | 0
How to add batch normalization layers in between Con. layer and RELU layer in Googlenet.? Suggestions to improve accuracy..
To add new layers in layergraph object, first add the new layer using 'addLayer' function. Then, you can use 'connectLayers' fun...
5 years ago | 0
How to perform Faster RCNN on my own dataset in Matlab?
After you prepared ground truth from your dataset, load that ground truth data. Now, extract the training data from that ground ...
5 years ago | 0
Calculating the sum of each row in a matrix.
You can use 'sum' function to compute sum for each row and then can apply 'squueze' function to remove the singleton dimension (...
5 years ago | 0
trainNetwork error RESHAPE line 260
It seems that the error lies in using 'reshape' function in 'Crashworthiness_NN'. It may be possible that the number of elements...
5 years ago | 0
Using a trained Faster RCNN Object Detector, expected LABEL to be nonempty
It seems that the labelling is not done properly. It may be possible that some images are not labelled. So, it would be good t...
5 years ago | 0
how can one utilize a dropout layer in a neural network during prediction?
Usually dropout layers are used during training to avoid overfitting of the neural network. Currenly, 'dropoutLayer' of 'Deep le...
5 years ago | 0
Monitor Deep Learning Training Progress
You can leverage these links to get idea about how to train multiple deep learning networks and observe their training progresse...
5 years ago | 0
In the GAN example of the documentation, did we update D several times before updating G?
GANs can be trained in many fashions. Here, discriminator, D is updated once before updating generator, G. Hence, first, discrim...
5 years ago | 0
how can I do object detection with vgg16 by using rcnn??
You can extract the desired number of layers from the pretrained net and define your choice of network. Here is an small example...
5 years ago | 0
Create geometry from mesh surface mesh
You can leverage these links: https://www.mathworks.com/help/pde/ug/pde.pdemodel.geometryfrommesh.htmlsearchHighlight=geometryF...
5 years ago | 0
ADAS// Lane change
As the error suggests that it is possible that the block supports variable size signals but needs to be configured for them, you...
5 years ago | 0
File Doesn't contain valid data of type 'SignalLabelDefintion'
You can leverage this link to get more details on the import and export behaviour of the signal labeler: https://www.mathworks....
5 years ago | 0
| accepted
Forward outputs from discriminator of GAN vary with the number of inputs.
It seems that the discriminator layer weights get chnaged during second time calling of "forward" function. Make sure that the d...
5 years ago | 1
| accepted
How to make a simple gui for image processing?
You can leverage these links for creating apps using App Designer: https://www.mathworks.com/help/matlab/app-designer.html htt...
5 years ago | 0
What is the mean of "Error using builtin" when using trainNetwork?
It seems that data stored in the '.mat' file may have some error. Hence, it would be better to check the dimesnions of those dat...
5 years ago | 0
Accessing dlarray elements for further processing
You can follow this approach, A = randn(6,6); A = dlarray(A); A1 = A(1:3,:); A2 = A(4:6,:); Here, A is a matrix of 6X6 dime...
5 years ago | 0
trainning multiclass in rcnnObjectDetector
You can use 'Image Labeler' app to label your training data. For more information, you can leverage this links: https://www.mat...
5 years ago | 0
After creating YOLO v2 with resnet50, while training the network, getting error "Invalid training data. The output size ([7 7 16]) of the last layer does not match the response size ([1 1 3])."
From the error it seems that output of your network should have size [1 1 3], but it is having the size [7 7 16]. May be there i...
5 years ago | 0
How can I make a meshgrid of this image? I am trying to create a bathymetry with matrix.
You can do that following this way. Assume the image is I. [X,Y]=meshgrid(1:size(I,2), 1:size(I,1)); mesh(X,Y,I) %display mes...
5 years ago | 0
down sample nearest method
The command 'imresize(im,0.5,'nearest')' will first find out the query points i.e. it will map the output image cordinates to th...
5 years ago | 0
supervised learning to transform multi-dimensional data to 2D?
You can build your custom neural network to learn this mapping function from 14 dimensional data to 2 dimensional data. In this...
5 years ago | 0
How can I add gaussian noise to image that are of class double in the range [0, 255]?
The 'imnoise' function expects input pixel values of data type 'double' and 'single' to be in the range [0, 1]. It also accepts ...
5 years ago | 0
| accepted
Shoud I preprocess the input data before using fitcsvm?
It is better to preprocess the input data before using 'fitcsvm'. There is option to standardise your input data by setting the...
5 years ago | 0
| accepted
cnn for feature extraction
As you have your RGB images ready, then you can define your custom convolutional neural network using 'dlNetwork' object and tra...
5 years ago | 0
Regarding 3D-UNET for segmentation.
Dataset for training 3D U-Net contains 4-D voulmes of which each one represents a stack of 3D images. The first three dimensions...
5 years ago | 0
| accepted
Regarding GAN and its loss objective
You can use 'mse' function from Deep Learning Toolbox which calculates half mean sqaured error between given two inputs. dlY = ...
5 years ago | 0
| accepted
how to change the color output of segmentation?
For "imshowpair" function, inputs should be grayscale/ binary/ truecolor images and for "jaccard" function, inputs sholud be bin...
5 years ago | 0
Error using Semantic Segmentation Using Deep Learning
I have tried to replicate that same example (mentioned in the provided link) on MATLAB R2019b and it sucessfully ran. On MATLAB...
5 years ago | 0
image labeler_Label Pixels Image
You can use "object DetectorTrainingData" function to create table form the labelled ground truth objects which are returned fro...
5 years ago | 0
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