Smooth edges

[PierineAsmat]

Hi, My name is Cindy. Currently, I am doing a job about coastal management. I am pretty new using Arcgis and I use mosaic to new raster to merge 2 different raster of the same place. Before that I use Resample to obtain the same cell size, but there is a problem when I am merging them this appears, there is some way to smooth the edges or interpolate the values of that part to have a better transition from one raster to another. Thank you. I hope that you can understand me.

[DanPatterson_Retired]

There a number of smoothing approaches

Smoothing zone edges with Boundary Clean and Majority Filter—Help | ArcGIS Desktop 

but I suspect that you want the coarser raster to not be so prominent i the final result.  You can experiment or see if

a smoother interpolator does better or whether there is a colour scheme that is more subtle.

You hopefully are only using the result for display purposes, since changing the underlying interpolation values has consequences, if the original interpolations are representative of the patterns.