I need to batch convert RGB to grayscale. I know that Juan wrote a batch grayscale converter for the batch debayer script about 3 years ago. How would I go about isolating that part of code and using it as a stand-alone script.
Secondly, a PixelMath conversion should work - but how is that done. I reread Juan's old post and cant get it to work. Not my strong point.
Perhaps I have missed something obvious? Format hints when using the batch conversion script - maybe? Not sure?