How can i insert an image in an assembly in SolidWorks 2015?
2 Answers

http://help.solidworks.com/2013/english/solidworks/sldworks/t_insert_sketch_picture_in_drawings.htm
files of type: .bmp, .gif, .jpg, .jpeg, .tif, and .wmf
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Agreed!
That what want to do the author
http://help.solidworks.com/2013/English/solidworks/sldworks/c_decals.htm
(Dan Oprescu wanted to add logo to the 1 side of the train)