1. A system comprising: memory storing a digital video and a noise decay module, the digital video comprising a series of root images, the noise decay module comprising instructions; and at least one processor configured to execute the instructions that when executed cause the at least one processor to obtain a selected one of the series of root images and generate a denoised image based on the selected root image, the selected root image comprising a plurality of root pixels each associated with a set of color values, for each root pixel in the plurality of root pixels, the at least one processor generating the denoised image by: determining a perceptual luminance value for the root pixel based on (a) the set of color values associated with the root pixel and (b) the set of color values associated with each of a predetermined number of root pixels neighboring the root pixel, the set of color values associated with the root pixel being expressible as a color vector with a first plurality of elements, each of the first plurality of elements storing a different one of the set of color values, generating a monochromic vector for the root pixel, the monochromic vector having a second plurality of elements, each of the second plurality of elements equaling the perceptual luminance value, generating a biased monochromic vector by multiplying monochromic vector with a bias calculated as a function of the perceptual luminance value, and generating a new set of color values associated with a new pixel of the denoised image by blending the biased monochromic vector with the color vector.