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Registration date : 11/10/2007

PostSubject: Night Vision Tutorial & Plugins   Sun May 10, 2009 4:18 pm

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The Night Vision Thing Ś A Photoshop Recipe

A Night Vision Device (NVD) works by using either image enhancement or thermal imaging techniques. Whichever method is used, photos from night vision devices are instantly recognizable by their greenish glow.

I visited some online stores to study night vision goggles and scopes (research!) and found that images from NVDs also tend to include some noise, some blur, and dark areas near the edges. So I'll incorporate these visual elements into our project to add realism.

Going Gray
The first step is to convert your source file to Grayscale. Choose Image> Mode> Grayscale.

Once in Grayscale mode we can create our night vision green, which we'll do by applying a Duotone.

Two Shades Of Green
Choose Image> Mode> Duotone.
This will bring up the Duotone Options dialog box. Now we need to pick two different greens. Our Ink 1 green will be 25BF21. Just click on the little color square and enter the number via the Color Picker. You must name your Inks so name this one NVD1 (or whatever you wish). Repeat this for Ink 2 and enter A8D9A7 for the color and NVD2 for the name.

We'll go back to RGB mode now. Choose Image> Mode> RGB Color. Next we'll increase some of the light in the source file.

Tweak With Levels
Copy your Background Layer and name it. Select your new layer and choose Image> Adjustments> Levels.

In the Input Level dialog box enter (from left to right): 70, 1.00, and 230. This will boost the contrast and give us more of a glow from some of the light.

Selective Blur
Choose your Blur Tool and set it to a low opacity, about 20%. Choose a medium size brush and run it across the bottom of the photo, in this case to make the runway approach lights slightly blurry.

Add Noise
Now we'll add some noise into the file. Choose Filter> Noise> Add Noise. Enter Amount: 3%, Distribution: Uniforn, and make sure Monochromatic is selected.

Levels - 2nd Pass
Choose Image> Adjustments> Levels. This time in the Input Level dialog box move the Left Slider toward the right to darken the image uniformly.

Final Adjustments
Choose the Burn Tool, set it at Midrange, Exposure 50%, and carefully apply your brush in a circular motion to the outside of the image. This gives a nice subtle darkening effect to the edges. Finally choose Hue/Saturation and perform final tweaks by moving the 3 sliders in very small increments.

So Why So Many Steps?
Each NVD photo will come out slightly different because of the specifics of the source file. The point of having so many steps is to give you a chance to tweak the night vision recipe so you can achieve the desired result by experimenting at different key points.

Last edited by Toxico on Fri May 22, 2009 5:50 pm; edited 1 time in total
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Number of posts : 2223
Age : 46
Location : Ruma
Registration date : 11/10/2007

PostSubject: Re: Night Vision Tutorial & Plugins   Fri May 22, 2009 5:49 pm

NightVision FREE plug-in

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NightVision is a plug-in for PhotoShop compatible plug-in hosts. It will work with applications such as PhotoShop, Paint Shop Pro, PhotoPaint, PhotoImpact and Picture Publisher amongst many others.

Use the NightVision plug-in to create completely realistic army night-goggle type images complete with true over lighting, scaled noise, realistic feedback and anti-aliassed interlacing.

Not only does NightVision provide a realistic looking effect, it can actually enhance and correct image intensity just like real night-vision hardware.

Besides bringing you total realism, the NightVision plug-in will also you to do non-realistic effects such as the blue scan of a bird shown here on the left.

Since any of the effects can be switched on and off, you can do a lot more than just enhance images. This image of a cowboy wearing a hat has been entirely created using NightVision, the source image was of normal color but by using a black scan color and enhancement, the over lighting feature took care of all lighting, creating a moody image. Adding noise and large feedback made it look just like a shot from a black/white surveillance camera.

You can use the NightVision plug-in for post-processing your images and (3D) animations or just for any of the separate effects it contains, in particular the interlacing feature is by far the best quality interlacing you will ever encounter and the enhancement option will allow you to look at details previously hidden in dark images.

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