I need a way to create a new image in Gimp which is completely black on one side, and completely white on the other. I've tried color to alpha but that did not seem to yield the correct results. I'm just looking for a workflow. I suspect it has something to do with adding new layers. Any suggestions?
Context: I'm trying to generate images similar to the MNIST dataset. The processed images show only black and white values. I'm trying to figure out why there are no gray pixels in my finished images. For debugging, I want to create an image which is black on one side, white on the other side. I will then downscale it to 3x3, which will result in the middle of the image having a gray value. I'm using area interpolation as my method of resizing the image.
The goal is to make the resultant image look as close as possible to these images: https://knowyourdata-tfds.withgoogle.com/#tab=STATS&dataset=mnist. Right now my images have no gray values, only black and white pixels.
The end goal is secondary for now, I'm just looking for a way to create an image that has black pixels on one side and white on the other side. I mentioned Color By ALpha because that is one of the things that came up when I was googling how to do this. The area interpolation method should create antialiasing and introduce gray values, but it doesn't.