(the Open test image… button) on the toolbar (or select the File | Open Test Image… menu item).or
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 the most accurate noise profile that perfectly matches the 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.
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.
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.
(the Open test image… button) on the toolbar (or select the File | Open Test Image… menu item).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 steps 2-3.