Topic: Remove digital noise, or how to fix grainy pictures
Noise in digital photos looks like flecks of random color in an area of an image that should consist of smooth color. It is somewhat similar to the "snowy" appearance of a bad TV signal. Digital photos shot in low light or with a high ISO setting often exhibit this undesirable noise. Digital noise is most visible in dark areas of the picture and in areas that have a similar color or tone:
To quickly and efficiently remove digital noise from your photos, use the Denoise tool in Online Photo! Editor.
First of all, go to http://editor.pho.to/ and upload a photo that needs to be edited:
When the photo is uploaded, click the Denoise button (in the Correct photos section):
As soon as you clicked this tool, your photo is denoised. However, for best results, you can drag the sliders (they will appear above the image) to adjust the noise reduction strength and compensate for image blurring:
Luminance denoising: Luminance (or Contrast) noise can be identified by the lighter or darker spots appearing in a color of an image. Drag the slider to the right to increase the strength of denoising.
Color denoising: Color noise (or Chrominance noise) is seen as out-of-place specks of red, green or blue on your image. Drag the slider to the right to increase the strength of denoising.
Crispness: compensates for image blurring. Drag the slider to the right to give more sharpness to the image.