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There are several getters for various image data:

• getFrameValue Gives you the width and height (in pixels) of the image, and a pointer to the start of the pixel array of a Pds::Camera::FrameV1 object.
• getOpal1kValue an alias for getFrameValue
• getTm6740Value an alias for getFrameValue
• getCspadQuad Gives you a pointer to the first position in the array of pixel data from the XPP CsPad detector (or alternatively you can get a pointer to the Pds::CsPad::ElementV1 object itself).

int getFrameConfig   (FrameDetector det);
int getFrameValue(FrameDetector det, int& frameWidth, int& frameHeight, unsigned short*& image );

fetches an image from the FrameDetector of your choice.
Specify the detector (using an appropriate enum), and getFrameValue will direct your pointers to the width and height of the image as well as the start of the pixel array.

Other frame detectors:
  AMO:
      AmoVmi
      AmoBps1
      AmoBps2
  SXR:
      SxrBeamlineOpal1
      SxrBeamlineOpal2
      SxrEndstationOpal1
      SxrEndstationOpal2
      SxrFccd
   XPP:
      XppSb1PimCvd
      XppMonPimCvd
      XppSb3PimCvd
      XppSb4PimCvd

For an example of how to draw the an image as a 2D root histogram, see the myana_cspad.cc example.