Convert color image to grayscale: Failed to apply Grayscale

Bud — Thu, 02 Jan 2025 21:40:35 GMT

ArcGIS Pro 2.9.5 and 3.4.0

I have a sample plan & profile image: https://epg.modot.org/files/9/94/237.4_Plan-Profile_Sheet_Oct_2011.jpg

I want to convert the color image to grayscale. Use case:

I tried this:

Imagery ribbon tab > Raster Functions > Raster Functions > System > Conversion > Grayscale > Create new layer
Error: Failed to apply Grayscale
I also tried Colormap to RGB, since that was recommended in a few forum posts.
Error: Failed to apply Colormap to RGB.

Why am I getting those errors? How can I convert a color image to grayscale in Pro?

Re: Convert color image to grayscale: Failed to apply Grayscale

Bud — Thu, 02 Jan 2025 20:56:21 GMT

Esri Case #03802484 - ArcGIS Pro 3.4: Convert color image to grayscale - Error: Failed to apply Grayscale
From the screenshot you provided, it appears that the input raster wasn’t specified when running the tool. Please specify the tif file as the input raster (as shown in the screenshot below) and try again.

topic Convert color image to grayscale: Failed to apply Grayscale in ArcGIS Pro Questions

Convert color image to grayscale: Failed to apply Grayscale

Re: Convert color image to grayscale: Failed to apply Grayscale