# Sourav Bairagya

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**Content Feed**

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...

ungefär ett år 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...

mer än 3 år 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 ...

mer än 3 år 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 (...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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....

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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 ...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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 = ...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år 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...

mer än 3 år ago | 0