How to embed image or picture in jupyter notebook, either from a local machine or from a web resource?

I would like to include image in a jupyter notebook.

If I did the following, it works :

from IPython.display import Image
Image("img/picture.png")

But I would like to include the images in a markdown cell and the following code gives a 404 error :

![title]("img/picture.png")

I also tried

![texte]("http://localhost:8888/img/picture.png")

But I still get the same error :

404 GET /notebooks/%22/home/user/folder/img/picture.png%22 (127.0.0.1) 2.74ms referer=http://localhost:8888/notebooks/notebook.ipynb