What's the image resizing impact on the accurate x-y location of a point?

Hi all, I'm interested in X-y location of a point on an image. If I interpolate the image to be 1000 by 1000 pixels, then downsample it to 200 *200 pixels. Then measure X-Y location of the point....

06 July 2019 2,907 8 View

Why does some metric (cost function) require very short step size of the optimizer to give good registration results?!?

Hi All, If the metric ( cost function) is very sensitive to the step size of the optimizer and the number of iterations, what does it mean?!. Does that mean the metric has a limit then the...

04 May 2019 5,955 4 View

If C-B= 0, does that mean good registration ?

if A (fixed image or reference image) , B ( moving image),and C is the resulted image after the registration. What should be C-B? If C-B= 0, does that mean good registration ? Thanks,

02 March 2019 7,347 3 View

Why do we need to down-sample a histology image ?

Why do we need to down sample the histology image when we try the registration to a medical image?. one reason that I know is to reduce the noise. Also, to help the similarity metrics to find a...

01 February 2019 636 9 View

What's the difference between scaling images based on scale factor and randomly?

what's the difference between scaling two images based on scale factor (microns per pixel in each image) and scaling the images randomly (e.g bring two images to the same size regardless the scale...

10 November 2018 4,847 2 View

Is there anyone expert with using Elastix for image registration ?

I'm facing a difficulty in evaluating the registration accuracy by using Elastix, since I'm using an artificial images. I would like to have an advice on how to evaluate the accuracy of the...

08 September 2018 8,246 5 View

What could cause the symmetric shape that resulted after the subtraction of registed moving image from the fixed image?

I made a registration between fixed and moving image using affine transform and differences metric. I subtracted the result image from the fixed image to evaluate the registration. As you see in...

07 August 2018 5,543 2 View

Questions in images registration ?

Hi All, I'm using Elastix software to do the registration between a histology image and MRI? I have some questions: 1. what do you think the most important parameters that could affect the...

07 August 2018 8,508 1 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

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 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

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View