• X-Ray

    Dahlias fusion X-ray HDR photo

    Long time ago my friend Harold and I did these X-rays in my practice. There was so much to do. Today was a chance to process the fusion images. Some details can be found in my FAQs.

    The manual HDR is already appealing to our eyes.

    Dahlias using manual HDR in visible light

    There is some charm in the X-ray image of the same composition. The hidden parts of the stalks can be clearly seen. 

    Five Dahlias X-ray photo © Julian Köpke

    The fusion image of this composition shows both color and hidden structures.

    Dahlias fusion digital X-ray with manual HDR photo in visible light

    Finished image with a background:

    Dahlias fusion digital X-ray and manual HDR photo with background © Julian Köpke
  • X-Ray

    Nautilus shells 3D X-ray photo

    How does an X-ray look like with a complete, unsplit specimen of a Nautilus shell ? Will X-rays go through the object ?

    My three Nautilus shells I bought in Crete are split specimens. The following approach will give an answer to the question. My composition of my shells is 3-dimensional and in nearly upright position. X-rays were then done with different directions of the radiation to study the effect.

    Positioning of the three Nautilus shells on the X-ray sensor © Julian Köpke
    Positioning of the three Nautilus shells on the X-ray sensor © Julian Köpke

    The first image was obtained with radiation coming from the top.  The native X-ray representation is with a black background. Historically this was a film negative. Radiologists speak of „transparent“ areas where a film is black. Consequently, white areas are called „opaque“.

    The result of radiation coming from the top and slightly tilted shells gives different insights of each shell. The composition looks like a complex mathematical surface or some flying insect. 

    Nautilus shell 3D Digital X-ray Photo © Julian Köpke

    The inverted (or „positive“) representation is weightless and our mind starts to produce lots of phantasies about the composition.

    Nautilus shell 3D Digital X-ray Photo inverted © Julian Köpke

    The effect of colorizing an X-ray is not only graphically. It looks more natural.

    Colorized Nautilus shell 3D Digital X-ray Photo © Julian Köpke

    The following image was obtained by combining the inverted image with a flat projection of a single shell to a single image. Now one gets an idea of the effect of the beam path.

    Nautilus shell 3D Digital X-ray Photo © Julian Köpke

    A tilted beam path shows the a bit more detail of the „wings“. Tilt was about 30 degrees.

    Nautilus shell 3D Digital X-ray Photo tilted beam © Julian Köpke
    Nautilus shell 3D Digital X-ray Photo tilted beam © Julian Köpke

    Tilt by 45 degrees shows more of a Nautilus as we know it.

    Nautilus shell 3D Digital X-ray Photo tilted beam © Julian Köpke
  • X-Ray

    Sunflower X-ray photos revisited

    How to show the sun in the middle of a sunflower ? For astronomers it is quite common to look at the sun in hydrogen alpha light, which is a pure red at 635nm. With artistic eyes, a red center might be overdone.

    So I tried two different representations, one in BW that is close to the natural look and feel of a sunflower and one with a light blue in the center as complementary color to the yellow petals.

    This sunflower is a fusion photo of X-ray, monochromatic Hα light of the sun converted to BW and a sunflower on a lightbox. © Julian Köpke
    This sunflower is a fusion photo of X-ray, monochromatic Hα light of the sun converted to blue and a sunflower on a lightbox. © Julian Köpke

    The surface structure of our sun can be seen like astronomers see it.

    There is no photo of the next digital X-ray image of a sunflower with its stalk and a leaf:

    Digital X-ray photo of a sunflower (inverted representation). © Julian Köpke
  • X-Ray

    Shells fusion X-ray photo

    Long time I dreamed of this fusion image of shells. Because already on a lightbox some of the shells are transparent and have nice colors. I like the shining through effect very much.

    The X-ray image is a compromise of structure and density resolution, depending on the maximum energy the mammography system is able to produce.

    Today I’m not at all in a stable state due to a recurrent infection. So I allowed me to do this image instead of hard working.

    Shells fusion X-ray photo © Julian Köpke

    It is the light inversion in Lab color mode that shows more of a X-ray look and feel. The colors are pretty close to the bright image.

    Shells fusion X-ray photo with inversion of the L-channel © Julian Köpke
  • X-Ray

    Composite of a sunflower: X-ray, light and Hα

    In a digital world we can combine different digital sources. This photo of a sunflower is a composit of its X-ray, its photo on a lightbox and monchromatic sunlight at a wavelength of 635nm (Hα light).

    In fact: this is an example of an impossible thing. But you may be able to feel the warmth of a sunbeam emerging of the core of the sunflower. And the petals act as prominences.

    This sunflower is a composit of X-ray, monochromatic Hα light of the sun and a sunflower on a lightbox. © Julian Köpke
  • Lightbox

    Primroses

    I felt very much attracted by these primroses. They were close to purple and red and I could see them already as a beautiful print.

    But how photographing them on a lightbox ? They always toppled over. Many efforts were useless. Blossoms tend to move, always.

    On this photograph I put the blossoms top-down. Because any arrangement could be done then. It works !

    Purple Primroses © Julian Köpke

    A different color show the orange primroses. Composition with or without leaves ? Without gives more the impression of a painting.

    Primroses II © Julian Köpke
    Primroses I © Julian Köpke
  • Lightbox

    Three vetches

    X-ray images give an insight into the inner (or hidden) structure of a flower. HDR images on a light box are quite close to this. 

    Today I wanted to show the softness of petals and went to my dealer. She sold me three vetches, not really expensive for the purpose. 

    This is my third composition today of the three vetches on my lightbox. The play of the light in the petals resembles to some extent X-ray images.

    Three vetches © Julian Köpke
  • Lightbox

    End of wintertime

    Our weather is more and more weird. Today was the second day with a warm sun and a blue sky. Nights are getting pretty cold, days up to 25 degrees Celsius.

    Cleaning up our garden led us to some old physalis which were a little more than a skeleton. In autumn these fruits look like lanterns, now they resemble an X-ray.

    I did this shot on a lightbox using manual HDR technique.In Lab color mode I obtained this image with a pur black background.

    It’s an exoskeleton for the fruit inside which remains that way without bruises.

    Physalis after winter has gone. © Julian Köpke
  • General

    X-ray Odyssey

    How to communicate an erratic process in terms of an image ? The Iliadic greek were pirates of the Mediterranean with fast vessels, invading mainland from the seas, enslaving people, robbing stocks and much more.

    The writing down of the Ilias was between 678 and 662 B.C., a time of Assyrian dominance and cultural superiority.

    With three different Nautilus shells I bought last September on Crete I did this composition on my big X-ray sensor with 35cm x 43 cm and 170µm per pixel resolution. Two energy levels were necessary to get a high resolution image of the core of the Nautilus shells.

     

    Odyssey © Julian Köpke

    To overcome the look-and-feel of a medical X-ray it is a logical idea to invert the light. Black becomes white and vice versa. White means shining through of X-rays, black means opacity. It’s like a dream !

    Odyssey (light inversion) © Julian Köpke
  • X-Ray

    Nautilus and Flowers

    How to prepare a X-ray session ? What flowers suit to a Nautilus shell ? Where does color come in ? 

    I went to my gorgeous florist to have a look what offer she can make during wintertime. My phantasy were spinning around something ethereal or unrealistic. I bought some flowers with respect to their shape. 

    The Anthuria caught my eye immediately. The Tulip was still closed and got more and more yellow within hours.

    All these compositions shown here were made with dual energy X-ray. The lowest energy of the tube is 40kV, which yields with 4 mAs a quite good insight of flowers. For the center of the Nautilus shell, 70kV and 2.5 mAs is more appropriate.

    My first composition was a Nautilus taking off a bouquet of flowers. This reminded me of Renaissance engravings full of symbols. I do not feel depressed. The representation as a X-ray positive jsut shows the bouquet.

    Miraculous flowers and nautilus shell © Julian Köpke
    Miraculous flowers © Julian Köpke

    A more grounded composition is the second with a Nautilus shell moving towards the roots of my bouquet. Hopefully, the plants will survive. The positive representation always needs some extra editing. By just inverting the Blacks and the Whites the Nautilus would be too dark. Our reception cannot be just inverted and feels alright.

    Flowers and Nautilus © Julian Köpke
    Flowers and Nautilus © Julian Köpke

    With the look-and-feel of old engravings in mind the third composition ist between surreal and a still. It took me some time to mask out the flaws of an original X-ray to get a true black background. Masking can be done iteratively and easily combined with Photoshop. („That’s what Photoshop is made for  !“).

    Some colorizing was done to overcome missing photographic shots. There was simply no time in my X-ray unit to do both at a time.

    Nautilus shell as a vase or a vessel („Hansekogge“ or cog) © Julian Köpke
    Positive representation of Nautilus shell as a vase or a vessel („Hansekogge“ or cog) © Julian Köpke
    Coloured Nautilus shell as a vase or a vessel („Hansekogge“ or cog) © Julian Köpke
    Coloured positive representation of a Nautilus shell as a vase or a vessel („Hansekogge“ or cog) © Julian Köpke

    My fourth composition is called „The Argonauts“. The Nautilus shell serves as Argo, the legendary fast ship, with its crew, called Argonauts. The colored version is more convenient for our eyes. As before the X-ray positive looks more ethereal. 

    A Nautilus with flowers as Argonauts © Julian Köpke
    A Nautilus with flowers Argonauts © Julian Köpke
    X-Ray positive of a Nautilus with flowers as Argonauts © Julian Köpke
    Colored X-ray positive of a Nautilus with flowers as Argonauts © Julian Köpke