Kahn_Iceay’s How to Tutorials for the JC Part 3
Holograms
Step 1 Workspace

You’re going to have to set up your workspace to include the layers dialog. There will be plenty of layer work in this tutorial so its best to duplicate my workspace set up from Tutorial 2. Column 1 is the main GIMP window, Column 3 is your Dialog box, and Column 2 is your image window filling the space between the two. As with last time I find this workspace set up the most appropriate for complexe and simple edits.
Step two: Crop and Trim
Using whatever combination of selection tools is appropriate for the image (in the case of the Marine above Magic wand and then trimming with Lasso) Select everything but the object or individual you will be converting into a Hologram.

Once you have this selected you will need to go to Layer>Transparency>Add Alpha Channel. Then using your erase tool and an appropriately large brush (I have made 1000×1000 and 500×500 brushes for such occasions) erase the area around your target till all that remains is the intended hologram subject(s) and the alpha channel. Once you have done so go to Select>none to unselect everything.
Step Three: Colorize
Now you need to appropriately colourize the image. To do this go to colors>colorize. The colorize window will appear and you’ll have to adjust the properties. While some pictures may vary due to texture and initial colours the range is generally around this.
Hue: 200
Saturation: 75
Lightness: 10
Once you do this click ok and the image will take an appearance of a deep blue. Once this is done move on to the next step.
Step Three: Duplicate
Now you will need to duplicate your layer. On the dialog box for the layers click the duplicate layer button four times. (only twice if you’re making a Force Ghost). To help keep track of them rename your layers by right clicking them in the dialog box and selecting edit layer attributes. Going from bottom to top name the layers Gaussian, Motion 1, Motion 2, Base, and Glow. You don’t always have to name your layers but the more layers you’re working with the easier it is to misplace one.
Step Four: Gaussian

Now select the Gaussian layer and go to filter>blur>Gaussian. A small dialog box will appear. You should not adjust the settings. Simply select ok, let the program run the filter, then move on to step five.
Step Five: Motion

Skip this step if you’re making a Force Ghost. Select Motion Layer 2, then go to layers>transform>flip horizontal.

Now go to Filter>Blur>Motion blur. Leave the angle as it is but adjust the length to 15. Sometimes less or more is appropriate but generally a 15 motion blur is best. Repeat the Horizontal flip returning the layer to its original orientation, and repeat the same motion blur with Motion Layer 1. When you’re done, right click Motion Layer 2 and merge it down.

NOTE: You’ll notice on this image the blur probably doesn’t resemble yours. I honestly made a mistake and only did a blur of 10, I fixed it later on.
Step Five: Glow
Simply select the Glow layer, and go to Filter>Artistic>Softglow. Without adjusting the attributes select ok and let the filter take effect. Move on to step Six.
Step Six: Scanlines
Skip this step if you’re making a Force Ghost. Using the square select tool select select one through three areas of your Glow layer and copy them (ctrl+c).
Now create a new layer above the glow layer with the name Scan Lines and paste (and anchor) the copied sections onto the new layer.

Once you have the selections anchored go to colors>hue saturation and on the dialog box adjust the lightness to 25 and press ok.
Finally go to filter>blur>gaussian blur and apply a 5.0 gaussian blur to the scan lines layer. Once this is applied set the layer to screen and move on to the next step.
Step Seven: Hologram Lines
Skip this step if you are making a Force Ghost. Create a new layer, and name it “Overlay” then with the fill tool fill it with a pattern of lines, in my version of Gimp this pattern is called “Stripes Fine”. Once you have the layer filled make the layer an Overlay similar to setting the scan lines layer to screen, simply using the drop down menu. Then lastly apply your chosen background (you can get the Holodeck Background here) as the bottom most layer and move on to the final step.
Step Eight: Opacity.


Finally you will need to adjust the Opacity of each layer to facilitate the effect. While I encourage you to play with the settings and find which one best suits your individual background these are the settings I use.
Overlay: 100%
Scanlines: 36.5%
Glow: 43.5%
Base: 36.5%
Motion: 52.9
Gaussian: 32.2%
Background: 100%
After this you’re done. Save the image as a .PNG file and have it merge the visible layers. It will not overly effect the end result of your image at all. jpg files do not support transparency and are not recommended for this if you’re not using a solid background. I recommend also saving an XCF file (or PSD file if you’re doing this in Photoshop) in order to make any changes to the file in the future. Other then this however your hologram is complete. As before though I encourage you to tweak the levels of a few things here and there especially when applying holograms to vibrant backgrounds. I hope this has been helpful to you.

