Just a couple of possibly bad ideas:

Textures and materials in the final piece that represent each pixel such as a leaf for a pixel which contains trees, pebble for beach ect, either using computer texture or photo. The images could be mapped to the pixels.

Using a single strip of pixels and narrowing down focus.

Changing perspective on the image.

Blurring the pixilated image to create a smooth effect.

I’ll add to this as I come up with more and make decisions.