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Under "Examples" in the help docs for ImageData you can see an image of a planetary body (Mars?). The image probably comes from Mathematica's image samples somewhere in its folders. What I mean however is:

How can I get this info right from the cell in the help documentation notebook?

Can one obtain the file source for this image from this expression in the documentation?

dionys
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Hp Radojewski Schäfer Von
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1 Answers1

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The image "container" or object has several pieces of metadata about the image and its encoding, as well as the image data (i.e., the values that define the pixels) itself. You can see what this data is using

InputForm[img]

where img is your image. For the Mars picture of the question

enter image description here

this gives:

Image[RawArray["Byte", {{{221, 139, 66}, {217, 135, 64} ....
   .... {0, 0, 0}, {0, 0, 0}, {0, 0, 0}}}], "Byte", ColorSpace -> "RGB", 
        ImageSize -> All, Interleaving -> True]

so you can see that the meta data is limited to Byte type (binary, grayscale, etc) ColorSpace (RGB, HSB, etc), ImageSize, and InterLeaving. There is no place to store an address for the source of the image.

This image of Mars does not seem to be part of the Wolfram curated data, as it is not part of either ExampleData["TestImage"] or ExampleData["AerialImage"]. If you do a google image search on this image, here are the images google thinks are most similar:

enter image description here

bill s
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