With version 2.0.0, when I run viewer_mps with --no_rectify_image, I get:
NotImplementedError: Showing upright-rotated image without rectification is not currently supported.
Please use --no_rotate_image_upright and --no_rectify_image together.
However, --no_rotate_image_upright is no longer supported in 2.0.0 apparently:
viewer_mps: error: unrecognized arguments: --no_rotate_image_upright