Actually, if you have the ISDX module for Pro-E, an image (JPEG) can be inserted in the part mode for tracing. I have posted the information from Pro-E help menu below.
After the image is traced, I prefer to exit the style feature (ISDX) and use sketcher to create a new sketch. I will then trace over the reference sketch using the intent manager to create dimensions, and suppress or delete the style feature afterwards.
About Trace Sketch
You can import a sketch into Style on one of the three
default datum planes: front, top, or right, a user-defined datum plane, or a
planar surface. Using Style, you can reference and use images to model a part
within the Style feature. The referenced image or sketch is used as an underlay
for creating geometry when you manually trace the key features of the
sketch.
You can also reference a scene for creating geometry in
Style. A scene is a set of correlated images and curves created in Pro/CONCEPT.
When working with a scene, the curves are defined and maintained in the same
feature as the sketches.
To Insert a Sketch on a Default Datum Plane
Click Styling > Trace Sketch. The Trace Sketch dialog box
opens.
Select any default datum plane in the Trace Sketch dialog box. The Open dialog
box opens.
Browse to the required image and select it.
Click Open.
The image is added to the selected datum plane
on the screen.
The name of the image is added to the name of
the selected datum plane in the Trace Sketch dialog
box.
Click OK.
Edited by: c_thompson_68