Describe the annoyance

There is generally no consensus between RGB and BGR image formats. For example, Pillow's PIL.Image.open() yields RGB format (including when the image is converted to a Numpy array). OpenCV's cv2.imread() or VideoCapture instead yield BGR numpy arrays.

rr.log_image() expects RGB and yields false colours otherwise. At the very least, this should be documented. Ideally, some optional format argument should be added so alternative formats may be correctly ingested.

To Reproduce
This code yields false color (e.g. blue skins):

import cv2
import rerun as rr

rr.init("demo")
rr.spawn()
image = cv2.imread("image.jpg")
rr.log_image("image", image)

This is fixed by adding explicit format conversion:

# ... 
image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
rr.log_image("image", image)

Ideally, something like that would be possible:

rr.log_image("image", image, format=rr.BGR)