This command could be an ideal solution in the following scenarios:
• | For photos that most likely contain excessive noise (such as a video whiteboard capture), using the command with low settings can help make the overall image clearer without excessive blurring. |
• | For photos taken with normal settings, this command is best used only on key areas needing correction, such as image artifacts surrounding the subject area. |
To remove digital noise quickly |
• | Choose Adjust One Step Noise Removal. |
After a brief pause, the noise is automatically removed. |
To use advanced options for removing digital noise |
1 | Choose Adjust Digital Noise Removal. |
The Digital Noise Removal dialog box appears. |
2 | In the Remove Noise tabbed area, mark the Link detail sizes check box to adjust the Small, Medium, and Large settings in proportion to each other. |
3 | Type or set values in the Small, Medium, and Large controls. |
These controls define the amount of correction to apply to small, medium, and large noise patterns. |
4 | Type or set a value in the Correction blend control to determine to what degree the corrected image will be blended in with the original. |
The blending values range from 0.0 (no noise reduction) to 100.0 (full processing of the entire image). The default value is 70. |
5 | Type or set a value in the Sharpening control to determine the degree of sharpening, if any, to apply to the image after the noise reduction is applied. |
The default value is 0. |
6 | Click OK. |
Unmark the Link detail sizes check box, and type or set values in the Small, Medium, and Large controls.
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You can have a maximum of 10 sampling regions.
The Digital Noise Removal command is not designed to remove moire patterns. For information about removing moire patterns, see To remove moire patterns.
To save settings as a preset specific to an image and camera, mark the Camera preset check box and click the Save Preset button . When the Camera preset check box is marked, the Load Preset drop-list displays only previously saved camera presets, not the standard presets. To save settings as a standard preset, unmark the Camera preset check box, and click the Save Preset button.
For best results when working with JPEG images, choose Adjust Add/Remove Noise JPEG Artifact Removal before using the Adjust Digital Noise Removal command.
To protect image areas from noise corrections |
1 | Choose Adjust Digital Noise Removal. |
The Digital Noise Removal dialog box appears. |
2 | Click the Protect Image tab. |
3 | In the Before pane, pan and zoom as necessary so that you can view the region you want to protect. |
4 | Hold down Ctrl, and drag over the region you want to protect. |
Note: Holding down Ctrl does not create a corresponding crosshair in the image window of the Remove Noise tabbed area. |
5 | In the Selected hue range group box, type or set values in the Hue and Range controls. |
Note: The existing settings reflect the area sampled. You can manually adjust the hue knob by dragging it inside the ring. |
6 | In the Protect selected hue range group box, drag any of the seven graph handles downward to apply less correction and smoothing to the corresponding segment of the hue range. |
For example, dragging just the middle graph handle to the bottom of the graph completely suppresses the midtone of that hue range. |
Note: The graph handles cannot be dragged laterally. |
7 | Click OK. |
You can remove color adjustments for a selected color range by clicking Reset Current. To remove all color adjustments, click Reset All.