You don't say what the data represents. Is it 3-channel RGB? Is it intensity? You can use the intensity graph to show an X vs. Y vs. Intensity image. If you have a monochrome camera, that makes a fine image - just set your min and max colors to be black and white.
If you mean RGB, one way is to scale all three components into U8s (0..255) Combine them into an array of I32s, then use FLATTEN PIXMAP to convert them into an image to feed to a PICTURE indicator. You can then get the complete image data from the picture and save as PNG / JPG / BMP.
