stereo: depths are estimated by comparing two images of the same image from slightly different angles
monocular: depths are estimated from a single image

from transformers import pipeline
depth_estimator = pipeline(task="depth-estimation")
preds = depth_estimator(
     "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/pipeline-cat-chonk.jpeg"
 )