Denoising (iDen)

Imatrics Denoising (iDen) provides a broad range of features for removing digital camera noise.

Noise, which becomes particularly critical in adverse acquisition circumstances, may be due to a range of factors:

• Noise due to the sensor and the incident light.
• Noise produced in the capture device electronics (interference).
• Noise associated with the scanned medium (texture of the photographic paper, film grain, etc.).

iDen estimates the statistical distribution of noise in the picture in order to eliminate it. The process is automatic and does not require any user-defined parameters.

iDen can be applied successfully in a range of sectors:

• Commercial and domestic digital photography: iDen can eliminate noise from photos in newspapers or taken with the user's own camera.

Original photo from www.elmundo.es, enhanced by iDen enlarge >>

• Infrared vision: iDencan enhance infrared pictures, which are normally very noisy.

Noisy photo taken with a thermal (infrared) camera and enhanced using iDen (image from [1]) enlarge >>

• Night vision:Eliminates noise in pictures taken in extreme lighting conditions.

Night-vision picture taken with an image intensifier, restored by Imatrics. Courtesy of CIDA (Spanish Navy R&D Centre) enlarge >>

• Video: Imatrics Denoising (iDen) can also be used on video. This high-speed technology and efficient implementation enables noise to be removed in real time (i.e. as the video is reproduced) in high-resolution video (up to 480x360 pixels).

  As in the case of static images, the process is automatic and requires no input parameters.

[1] J. Portilla, "Blind Non-White Noise Removal in Images using Gaussian Scale Mixtures in the Wavelet Domain," 4th IEEE Benelux Signal Proc.Symposium, pp. 17-20, Hilvareenbeck, The Netherlands, Apr 2004