Some 3D modeling programs like the 3D Coat can export various polygon files (*.ply) as common JPEGs. This will create just a 2D image of the possibly 3D model.
Convert Polygon graphics to JPEG bitmap image format.
We have found 2 software records in our database eligible for .ply to .jpg file format conversion.
Microsoft Windows software - convert ply to jpg on Windows
A 3D modeling tool
Convert from ply file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned ply to jpg. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A 3D CAD translation softwate