Noise reduction technology (Noise Reduction)

Which in the past few years, digital cameras, engineers continue to study noise reduction levels. .Noise reduction technology, the key is in the details without affecting the picture, on the basis of quality, reducing noise to appear. .Free noise reduction software, the early details and are often at the expense of the expense of picture sharpness, so that the screen has become smoother, less noise, but this method allows the same picture look like watercolor, <P> </ P> <P> in the past .there a few years, digital cameras, engineers continue to study noise reduction levels. .Noise reduction technology, the key is in the details without affecting the picture, on the basis of quality, reducing noise to appear. .Free noise reduction software, the early details and are often at the expense of the expense of picture sharpness, so that the screen has become smoother, less noise, but this method allows the same picture look like watercolor, the lack of details. .</ P> <P> following diagram illustrates the enlarged photos of various methods of noise reduction, photo is quasi-professional digital camera. .The results of noise reduction and red color Enlargement Enlargement said channel (magnification 4 times). .If the reader to the original display difficult to observe the noise, then look at the red channel Enlargement: </ P> original success of failure of the noise reduction noise reduction zoom 4 times the red box area please refer to the blue sky, the red noise ., observed in the red channel noise can be particularly evident in the failure to remove noise, but the blurred edges of the roof. .Successfully removed the noise, noise only, and to maintain the original edge sharpness. .<P> </ P> original success of failure of the noise reduction noise magnification 4 times the red box area blue sky noise in the red channel noise is very obvious failure to style wavy noise reduction to eliminate noise is not successful .wavy style with noise, and retain some "particles" to keep photos sharpness. .<P> JPEG compression and noise reduction </ P> <P align=center>.