pattern image

T
Posted By
tech
Oct 23, 2006
Views
329
Replies
4
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Closed
Hi,

Could anyone tell me how to generate this kind of pattern with Photoshop? Sample at http://www.vizros.com/tmp/line.jpg

Thanks,

Tony
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MR
Mike Russell
Oct 23, 2006
wrote in message
Could anyone tell me how to generate this kind of pattern with Photoshop? Sample at http://www.vizros.com/tmp/line.jpg

Start with a 1 pixel high grayscale image whose width is 1/2 of your final image size. Use Filter>Noise>Add Noise at 50 percent. Resize the image to 1/2 the final height. This will give you clean random vertical lines. Add 20 percent noise, and resize to your final dimensions.
—
Mike Russell
www.curvemeister.com/forum/
MR
Mike Russell
Oct 23, 2006
Could anyone tell me how to generate this kind of pattern with Photoshop? Sample at http://www.vizros.com/tmp/line.jpg

Start with a 1 pixel high grayscale image whose width is 1/2 of your final image size, and use Filter>Noise>Add Noise to add 50 percent noise. Resize the image to 1/2 the final height. This will give you a clean pattern, with random vertical lines. Then add 20 percent noise, and resize to your final dimensions.
—
Mike Russell
www.curvemeister.com/forum/
T
tech
Oct 23, 2006
Mike Russell wrote:
wrote in message
Could anyone tell me how to generate this kind of pattern with Photoshop? Sample at http://www.vizros.com/tmp/line.jpg

Start with a 1 pixel high grayscale image whose width is 1/2 of your final image size. Use Filter>Noise>Add Noise at 50 percent. Resize the image to 1/2 the final height. This will give you clean random vertical lines. Add 20 percent noise, and resize to your final dimensions.
—
Mike Russell
www.curvemeister.com/forum/

Thank you very much.

PS. do you know how the "Add Noise" is implement? What is the math behind it?

Thanks,

qq
MR
Mike Russell
Oct 24, 2006
wrote in message
….
PS. do you know how the "Add Noise" is implement? What is the math behind it?

Each channel value of each pixel gets a random number added to it, with the magnitude of the random number determined by the slider setting. Monochromatic noise adds the same value to each of the channels. Gaussian noise uses a bell shaped distribution for the random values. —
Mike Russell
www.curvemeister.com/forum/

Master Retouching Hair

Learn how to rescue details, remove flyaways, add volume, and enhance the definition of hair in any photo. We break down every tool and technique in Photoshop to get picture-perfect hair, every time.

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