DEM Extraction Wizard in ENVI- How can I introduce file with RPC information?

More Sahar Dehnavi's questions See All

Could any body help me with the time synchronization of Distributed measurement systems?

Dear all, We have several measurement systems in our institute and we are interested to make all the measurements synchronized. However, there are some differences in all the measuring...

05 June 2018 5,174 7 View

What is the common projection for collection of GCPs in MODIS data?

Hi all, I am working with some MODIS images. As I see the projection of these image data are based on Sinusoidal projection. When I would like to define some Ground Control Points (GCPs) on this...

03 April 2018 5,076 3 View

How should I add geographic lat/lon information (that are like a grid) to my raster image data?

Hi all, I have the latitude and longitude information for my image data in a separate data matrix. I would like to add this geographical information to each pixel of my raster image data. Would...

02 March 2018 3,761 5 View

How vperspec function in MATLAB works for image reprojection?

Hi all, I have an image with the near-side vertical perspective azimuthal projection (which is known as vperspec in MATLAB). I would like to convert the projection of my image into common...

01 February 2018 3,282 2 View

How can I extract epipolar images in the ENVI DEM extraction wizard?

Hello all, I would like to create epipolar images from two stereo pairs, but it is not possible for me to load epipolar images in the step number 6 of the extraction wizard. I would be grateful...

01 February 2018 7,477 3 View

3D Surfuce extrapolation in Matlab?

Dear all I would like to extrapolate a surface I have provided in Matlab. I tried to use the information in the following link ( with the scatteredInterpolant function ) however it is not...

11 December 2017 7,979 8 View

How to call IDL through matlab functions/ or what is the equivalent command of rebin from IDL in Matlab?

Dear all I am using both matlab and IDL for some programming, Unfortunately I can not find the equivalent command in Matlab for one of the important commands in IDL (i.e. Rebin) I would prefer to...

08 September 2017 3,392 8 View

IDL to matlab conversion?

Hi all, I have downloaded and installed the matlab2IDL from the sourceforge in the below website https://sourceforge.net/projects/idl2matlab/ however, I have a problem that I do not know how can I...

08 September 2017 8,987 4 View

How can I extract raster size from netCDF data?

Hello all; I am running a python code using spyder interface. I have image channels in netcdf format. I want to know the exact raster size in different channels. However, I see the following...

31 December 2016 1,330 1 View

Netcdf to hdf5 conversion

I want to convert some netcdf data to hdf5 format. Is there any software or tool available for this kind of conversion. I would appreciate any help that you can provide.

01 January 1970 2,264 0 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

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

What are the most reliable approaches to extract key continuous frames from a video, with complete automation?

I have an input video, of skin (from a microscope that means it is magnified such that blood capillaries are visible). The idea is to extract 15 sec of continuous frames from a video of 1 min,...

02 March 2021 2,735 2 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

Do I need to strip the PVDF membrane before staining it with colloidal gold?

Dear Colleagues, After running Western blot on PVDF membrane and detection using ECL, I would like to stain my PVDF with colloidal gold to be able to allign the ECL image with total proteins on...

02 March 2021 7,829 3 View

Which SAR dataset to use for generating coherency matrix and performing target decomposition (Description) ?

Working on chandrayaan-2 DFSAR data, there are three datasets available: 1) Slant range image data product: The slant range complex image file. Each pixel is represented by two 4-byte floating...

02 March 2021 8,481 3 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

Sayyed Mohammad Javad Mirzadeh

Dear Dr. Dehnavi,

About DEM extraction from stereo images, I recommend you to use the PCI software because in this software, you can easily define the RPCs files for DEM extraction module.

Best regards

Ali K. Resen

Dear Sahar,

see the following link, I hope it is useful for your work.

regards

Vladimir Skripachev

Hi,

What kind of Camera Model do you have ?

I guess that you have Pushbroom Sensor.

What parameters values do you enter to ENVI ?

with regards

Sahar Dehnavi

Thank you very much for all your comments and guidelines.

Mohammad: I will test the PCI also on my image data. Hope it will work. Thanks for your suggestion a lot.

Ali: Thank you very much for the Pdf file that you sent for the orthorectification. It was very nice, but unfortunately I did not find any information about an approach for introducing my RPC file!! Do you have any idea for that? I would be thankful if you could kindly let me know.

Valdimir: You are completely right. I have a Pushbroom camera model. I should enter Interior Orientation Parameters and introduce some GCPs on images since I have no GCP available in my test area. Please do not hesitate to let me know if any further information was required.

Thanks again for all.

Best,

The solution was to define a RPC file which was based on some GCP points and Rational Function Model (RFM).

I used a function for generating RPC files.

The RPC information which was added to the header file of my image in ENVI was not very useful for me :)

best,

Sahar