I suggest you follow a similar query asked here https://www.researchgate.net/post/How-to-calculate-Spatial-correlation-between-two-raster-image-in-arcgis and https://www.researchgate.net/post/How_to_statistically_compare_two_maps

Muhammad Ali Thank you very much for the above link.

A novel approach to optimize hierarchical vegetation mapping from hyper-temporal NDVI imagery, demonstrated at national level for Namibia - ScienceDirect (doi.org)

Indeed, a tricky issue colleague. May be our approach in comparing raster maps in the above may give you ideas.

Thank you very much for the above reference.

Dear Udara

You can use the REGRESS module (Regression Analysis) in IDRISI software. The REGRESS module undertakes a linear regression between image files (i.e., raster layer) or attributes values files.

Dear Piyathilake,

Maybe the "Band Collection Statistics" tool in the ArcMap can help you.

Please check the official description:

https://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/band-collection-statistics.htm

https://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/how-band-collection-statistics-works.htm

The Band Collection Statistics tool provides statistics for the multivariate analysis of a set of raster bands. When using the Compute covariance and correlation matrices option is enabled, the covariance and correlation matrices are output as well as the basic statistical parameters, such as the values of minimum, maximum, mean, and standard deviation for every layer.

The covariance matrix contains values of variances and covariances. The variance is a statistical measure showing how much variance there is from the mean. To calculate these variances, the squares of the differences between each cell value and the mean value of all cells are averaged. The variances for every layer can be read along the diagonal of the covariance matrix moving from the upper left to the lower right. The variances are expressed in cell-value units squared.

Reza Omidipour Thank you very much. It would be a great support for me if you could send me some references or published papers regarding the above-explained method by you.

Thank you in advance.

Ruocheng Hu Thank you very much for the explanation. I will look into the above-explained method.

Thank You.

Check this tutorial

https://statnmap.com/2018-01-27-spatial-correlation-between-rasters/

Interested.

Go to the Google earth engine (GEE) than upload your both raster files and run this code

// correlation

var image3 = ee.Algorithms.CrossCorrelation(image1,image2,2,5,0)

print(image3)

Hope it will help. Other wise you can contact me at [email protected].