remove moire pattern photoshop filters vintage

Remove Moire Pattern Photoshop Filters Vintage Zip To Have

Is there a good technique to remove or prevent a moir pattern from a digital camera capture I work for a small real estate newspaper and lately the majority of images we have received from Agents have been unretouched jpeg files from digital cameras.

Higher ISOs allow you to shoot in low light situations but the combination of low light and high ISO creates a perfect storm when it comes to camera noise and texture.

Camera noise is most obvious in the darker midtone and shadow areas of your image and often resembles small dots of color, which can ruin a perfectly good image.

There are countless ways of reducing camera noise using Photoshop and this tutorial is by no means the end all be all of color noise reduction.

In fact, this method works best for reducing small amounts of color noise since it primarily reduces the color not the texture.

Its a simple technique geared toward newbies that can yield huge benefits Step 1 Duplicate the background layer.

You can do this by simply dragging the background layer into the New Layer icon at the bottom of the Layers window.

Because we changed the blending mode on the layer, only color information is being blurred.

Again, this will only reduce the color in the noise, not the texture itselfsometimes this is enough, other times it is not, but I find this technique to be a good first line of defense.

At this point a layer mask can be added to the blurred layer and the layer can be selectively painted so as not to affect the entire image.

This technique could also be utilized to remove moir patterns from fabric What techniques do you use to reduce color noise Have an amendment to the above technique Let me know in the comments About the Plug-in This plug-in filter is used for descreening images that have been scanned from a previously printed source (such as a newspaper, magazine, book, postcard, etc).

It also can be used for descreening halftone films.

Reducing a halftone moir pattern in colour images (see Picture 3).

Short Tutorial Using the plug-in After the installation the Descreen filter will available as Sattva Descreen from the Filter menu.

Picture 1. The plug-in dialog (Windows version).

The legends on untitled buttons are displayed when the mouse moves over them.

Remove Moire Pattern Photoshop Filters Vintage Zip To Have

Download DescreenSamples.zip to have the sample images.

Example 1. Descreening in Automatic mode Open Gerard.jpg in Photoshop.

Launch Descreen (choose Sattva Descreen from the Filter menu).

Select Automatic.

Click OK. This is the simplest way to use the plug-in.

When put into the Automatic mode, the plug-in automatically calculates the all settings.

However, the Automatic mode does not produce the best possible results for colour images.

Close the file without saving.

Example 2. Descreening with a screen frequency measurement Open Milla.jpg.

Launch Descreen. Deselect Automatic.

Change the preview area so that it is filled with the image rather than with the text.

Click the Screen Measure button near the Screen slider to perform a calculation the screen frequency.

The plug-in will calculate the screen frequency and the screen angles over the part of the image shown in the Preview window.

Click OK. Close the file without saving.

Example 3. Descreening with tuning Open FalseMoire.jpg in Photoshop.

Choose Sensitivity to minimize moir.

Example 4. Descreening scanned colour images Scan a small colour image (about 1 x 1 inches) at 600.1200 pixelsinch.

It is important to use the scan resolution from the scanner presets value.

If your scanner has Descreen or Sharpen options, disable them.

The image should be scanned without scaling (i.e.

If you save the scanned image before descreening, use the TIFF format rather than JPEG.