Q: We are trying to get the image dimensions and position details in a
pdf file. We are using GetCTM()’s m_h and m_v (we have seen this in
your FAQ forum http://www.pdftron.com/net/faq.html#img_rot ) property
to get the x and y position of, but unfortunately the x value is
obtained properly but the y value differs from the actual postion.
Thanks in advance for your valuable support.
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A: What are the values that you get, and what are expected values?
Don't forget that the origin of image coordinate system in PDF is in
the lower-left corner of the image (or a page). If there is some image
rotation in the transform, things can get a bit confusing - unless you
are familiar with affine transforms. In this case you can obtain the
bounding box for the image using element.GetBBox(rect) method. For
example,
Rect r = new Rect();
element.GetBBox(r);
...