Is it fair to use augmentation only on classes with less samples?

I am training a model, where class distribution is unbalanced. So, I thought of applying augmentation technique, to improve the performance. I am wondering,is it fair to apply augmentation only on...

10 November 2019 9,926 5 View

Why do the DICOM files loaded through viewer are looking different than images loaded using python library?

I am working on DICOM images of chest X ray images. In this, when I load the image in DICOM viewer, the images are having good contrast ratio. And when I load the same DICOM in python using...

07 August 2019 414 3 View

How to convolve a 2d image with quincunx filter bank?

Can anybody explain me, how to convolve quincunx filter bank with any given image. I haven't found anything related to practical implementation of quincunx. If any one can help me in understanding...

10 November 2018 4,042 0 View

How to train deep learning model, if one class has large data compared to other classes?

I am using deep learning for brain tumor segmentation. For this, Brats 2013 data-set is the starting point. For using Deep learning technique, pixel classification has been performed. In this,...

07 August 2018 7,154 10 View

How to remove tumor from MRI and create an non-tumor brain MRI?

I have a stack of brain MRI with tumor present in some slices. I wanted to remove the tumor from that slices and fill these pixels with relevant values, such that it will be like non-tumor or...

04 May 2018 6,825 3 View

How wavelet transform and Independent component analysis are comparable?

Both the techniques, wavelet and independent component analysis are used to decompose signal or image, such that they can be used to find the relevant components. On what factors, we can compare them?

02 March 2018 1,667 9 View

How do I start to learn sparse coding or dictionary learning, such that I can write my own optimization equations?

I am currently studying sparse coding and dictionary learning. In that, I got to know that an optimization equation is the crux of the system. So, does writing an optimization equation is done by...

31 December 2017 1,895 2 View

How to compare edge enhancement in images?

I have developed a method using which the edges in images are get enhanced. Which evaluation metric shall I use to state that edges in image are improved or not? I am working on brain tumor images.

31 December 2017 7,253 10 View

How to perform spectral clustering for large size images?Does parallel computing can solve the issue of scalability?

I am working on Spectral clustering with the matrix size of 57600 by 57600. But,it fails throwing 'memory error'. It works for 8100 by 8100 matrix. Can using parallel computing approach help to...

01 February 2017 4,191 4 View

How to use sparse matrices effectively in python?

I am using large matrices in my research. The size of matrix vary from 3600 by 3600 to 57600 to 57600. The matrix are sparse in nature. But, despite using sparse matrix from scipy the computation...

11 December 2016 2,032 5 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Why should we choose deep learning to machine learning? Why is CNN better for image classification? Can I get Typical Answer?

What Characteristics makes CNN work better?

03 March 2021 1,458 4 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

Anyone plz suggest relevant topic for research in image processing+Deep learning.?

I have selected brain tumor images ...but now found that already lots of research done n this topic.

03 March 2021 5,774 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View