Hello,

Good question. I presume you know how to inherit a module if not let me know.

This way you can add a image. you can find an example of this in the res_partner module.

inherit the module, add a binary field:

_columns = {'image': fields.binary("Image",
            help="helptext"),
            'image_preview': fields.binary("Preview Image",
            help="helptext"),}

in the view-xml you can add a widget:

 <field name="image" widget='image''/>

there are some options possible like preview_image, size, maybe more, but i don't know all of them.

eg:  <field name="image" widget='image'' options='{"size": [90, 90], "preview_image":"image_preview"}'/>

That should do it.

Have fun.

You could easily add the required fields via the GUI by first editing the model and adding a binary field to the product.product or product.template model. You would then need to update the corresponding view for the product by adding an image widget and finaly edit the sale.order RML report.

There are multiple tutorials on this or similar procedures laying around. I could point a few out if you need.