Étape 1. Preparing a regular image for noise analysis

To analyze noise in a regular image, you can use the input image or an alternative regular image that was produced by the same camera (or scanner) in the same or similar shooting (scanning) mode. Using the input image usually produces most accurate noise profile that perfectly matches noise properties of this input image. However, if there are not enough flat featureless areas in the input image then you have to use an alternative regular image.

Case of using the input image

In this case, simply stay with the input image that is already opened in the Filtration Job Editor. The input image is displayed in both the Input Image and Device Noise Profile tabs.

To build a profile, work with this image in the Device Noise Profile tab in the steps 2-3.

Case of using an alternative image

If there is no large enough uniform featureless areas in the input image, you can use an alternative image. The alternative image is supposed to be produced by the same device working in the same or similar mode. This can be just another image from the same series; the image should contain at least one large enough uniform featureless area suitable for analysis.

To open the alternative image:

• Click (the Open test image… button) on the toolbar (or select the File | Open Test Image… menu item).
  
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• Paste the alternative image from the Windows clipboard or drag and drop it from another application to the image viewer in the Device Noise Profile tab.

The alternative image will only replace the input image in the Device Noise Profile tab for the purpose of building a noise profile. To build a profile, work with this image in the Device Noise Profile tab in Étape 2-3.

Étape 1 :: Étape 2 :: Étape 3