Step By Step Guide

 

On the following pages are tutorials for image processing two tasks in NoiseControl. They help you get an idea how and in which sequence to adjust the controls in NoiseControl. These instructions offer you guidance if you do not know NoiseControl that well. Once you are more experienced you can develop your own style of using NoiseControl.

 

Denoising An Image


Quick and Easy Approach

1. Keep the preview zoom at 100% to see the denoising effect correctly.

2. Choose "Easy Mode" from the Mode combo box if it isn't already activated.

3. Click the Reset button to set the default values.

4. Switch to the Auto tab sheet and click on the Auto Sample button or choose "Full Image" from its arrow menu. Click the Next button until you like the result.

5. If the result is still not satisfying, click the Auto Preset button. Also try the presets above and below the selected one in the preset list.

6. To fine-tune the result switch to Manual tab sheet and try various denoising and sharpening values.

7. Click OK to apply the correction.


Advanced Approach

1. Keep the preview zoom at 100% to see the denoising effect correctly.

2. Choose "Advanced Mode" from the Mode combo box if it isn't already activated.

3. Click the Reset button to set the default values.

4. Switch to the Auto tab sheet and click on the Auto Sample button or choose "Full Image" from its arrow menu. Click the Next button until you like the result.

5. If the result is still not satisfying, activate the sample tool and move the current sample area or draw one of your own.

6. Alternatively click the Auto Preset button. Also try the preset above and below the selected one in the preset list.

7. To fine-tune the result switch to Manual tab sheet and increase or decrease the slider values a bit.

8. Switch to the Enhance tab sheet and adjust the controls there.

9. Click OK to apply the correction.


Expert Approach

1. Keep the preview zoom at 100% to see the denoising effect correctly.

2. Choose "Advanced Mode" from the Mode combo box if it isn't already activated.

3. Click the Reset button to set the default values.

4. Switch to the Auto tab sheet and click on the Auto Sample button or choose "Full Image" from its arrow menu. Click the Next button until you like the result.

5. If the result is still not satisfying, activate the sample tool and move the current sample area or draw one of your own.

6. Alternatively click the Auto Preset button. Also try the preset above and below the selected one in the preset list.

7. For visual fine-tuning switch to "Lum. Intensity" on the Split View combo box, hold down the Shift key and click on the split area that you like best. Do the same for the subsequent four items on the Split View combo box.

8. To manually fine-tune the result switch to Manual tab sheet and increase or decrease the slider values a bit.

9. Switch to the Tone and Color tab sheets and use the controls there to selectively change the denoising for certain tonal and color areas. Alternatively use the eyedropper tool: Hold down the mouse button over the eyedropper tool to display its menu and select one of the options. Click on the preview over an area which you want to change, keep the mouse button pressed and drag left or right to change the denoising intensity or threshold of that area.

10. Switch to the Enhance tab sheet and adjust the controls there.

11. Click OK to apply the correction.

 

Manual Denoising

Manually adjusting the sliders of the Manual tab sheet in Advanced mode often produces the best results.

Preparation

1. Switch to Advanced Mode and display the Manual tab sheet.

2. Click on the Reset button or choose Default Settings from its arrow menu.

2. Click the 100% button below the preview and use the hand tools to scroll the preview to an important part of the image, which clearly exhibits noise.

Color Denoising

3. Try the following values for the Threshold slider of the Color Denoise group: 5, 10, 15, 20. At the same time observe the preview where the color noise is best visible. If 20 still does not sufficiently remove the color noise, try higher values. Please use the lowest values that clearly removed all color noise. If uncertain, activate the C button to see the color noise only. Make sure that no important color details are smoothed away in this view.

4. Adjusting the Radius slider. Try the following values: 4, 8, 12, 16. Observe the preview and see if a higher value removes the noise more efficiently. Us the lowest effective value.

5. If you notice that color detail is removed that should stay, try lowering the Intensity slider value. Alternatively switch to the Enhance tab sheet and use the Saturation controls there to recover faded colors. You can also activate the Threshold check box and try different values for the two Threshold sliders.

Luminance Denoising

6. Turn to the Luminance Denoise group. If too much luminance noise is present increase the Threshold slider. If the result looks too soft lower the value. Increasing the slider in steps of 5 is usually fine. Keep the lowest slider value that produces the best result.

7. Increase the Radius slider value in steps of 2 if too much noise is still visible. If the noise is already removed, try a lower value. At some point increasing the slider value will not produce a better result, so keep the lowest effective value.

8. Try the following values for the Softness slider: 1, 2, 3. If you are using a high Radius value also try higher values. Too high values tend to make the image too soft. Too low may not remove all noise.

9. Finally use the Intensity slider to adjust the degree of noise removal. A value of 50 keeps some fine grain in the image, but also preserves many image details. If the image contains strong noise you can also try values of 60 or 70. Higher value usually produce a plastic look.

10. If the image color is too distracting, activate he L button to only see the luminance. If necessary, readjust the sliders of the Luminance Denoising group again until you are satisfied. Better keep some noise if the alternative is loosing image details.

Other Adjustments

11. If your image contain large flat areas, e.g. sky, wall, or skin, you can try to adjust their denoising intensity or threshold separately with the controls of the Tone and Color Tab sheet.

12. Finally switch to the Enhance tab sheet and adjust the sharpening.

 

Creating Presets For Your Camera

1. Open photos that were taken with your camera at various ISO settings.

2. Run NoiseControl.

3. Use the steps described above for finding effective denoising parameters. But keep the controls on the Color tab sheet at zero, because such settings are quite individual to each image.

4. Switch to the Auto tab sheet and click on the Save button.

5. Keep the predefined folder and preset file name and press OK. If no preset file name is suggested, NoiseControl cannot access the EXIF data of the image. In such a case enter the full name of your camera, e.g. "Canon EOS 5D Mark II", and add the ISO value with "ISO" before it, e.g. "ISO 6400". The file name would then look like this: ""Canon EOS 5D Mark II - ISO 6400". If you are unsure about the camera name or ISO value, leave NoiseControl and look it up in the host application or another application that displays EXIF info.

6. Now the preset appears in the preset list on the Auto tab sheet. Click on the Auto Preset button to check if NoiseControl automatically selects it for the current image. The Auto Preset feature currently only works in Photoshop, Photoshop Elements and Photoline, because other applications do not supply EXIF data to plugins.

7. Cancel NoiseControl, switch to the next image and repeat the procedure from step 2.

 

Creating a Softening Effect

1. Keep the preview zoom at 100% to see the effect correctly.

2. Switch to Advanced Mode and click the Reset button.

3. Switch to the Enhance Tab sheet and deactivate the Sharpness check box.

4. Switch to the Manual Tab sheet and deactivate the Color Denoise check box.

5. Set the Intensity slider of the Luminance Denoise group to 100.

6. Choose a mid or high value for the Threshold slider.

7. Choose a Radius slider value.

8. Try a value of zero for the Softness slider. If it is not soft enough, try higher values.

9. Use the Intensity sliders to the Tone and Color tab sheets to selectively remove the effect again. You can also use the eyedropper tool to do that.

10. Click on OK to apply the effect to the image.