Adding support for MPO files

[ArielAram]

Hello !

It'd be great if support for *.mpo files could be added, because it would allow programs using OpenImageIO (like Meshroom) to accept images from most of the stereoscopic "3D" cameras around.

An MPO file contains inside 2 jpegs, so most of the code for handling jpgs can be reused.

Here is some info about MPO:

The MPO format is a standard format ( not proprietary) that was developed by The Camera & Imaging Products Association (CIPA).

MPO stands for Multiple Picture Object. It is basically JPEG file, which utilizes App2 EXIF blocks to include more than one image into the single file. Although it can store virtually any number of pictures, the main usage at the moment is for storing stereo images. MPO stores the left eye and right eye as 2 files in the mpo file.

Some examples of devices that use the mpo format are:

• Many cameras: Fujifilm FinePix Real 3D series cameras ( w1,w3, viewers), Sony DSC-RX10 III ,Panasonic 3d camera, Olympus sz-10, Sony Cybershot DSC-HX10, Nikon viewNX-i, etc.

• phones: some models of HTC ( e.g HTC Evo 3D)

• Nintendo 3DS

• Software: Photoshop, NVIDIA 3D Vision Photo Viewer,

• 3D TV:s such as Samsung plasma, etc,

So given that this is like a wrapper for jpgs I believe it should not be a big effort to add support for MPO files. But the advantages are big for anyone having a stereoscopic camera.

Thanks
Ariel//