Night Image Enhancement by Using non Linear Adaptive filter

Abstract

In this paper, we present a new image enhancement algorithm which is apply
to enhance night images or very low luminance images by using Gaussian
convolution and adaptive dynamic range compression of intensity that is
dependent on non leaner function. This leads a robust algorithm is more
resilience and that with low parameter moreover it's improve dark region in
digital image by luminance and contrast enhancement called non leaner adaptive
NLA filter . The results was compared with Histogram Equalization HE and
multi scale retinex MSR algorithm by calculate normalize mean square error
NMSR between processed images and original images with fair lightness,
histogram of all method enhancement is a account . Adaptive filter has high
efficiency in enhanced night image with low lightness compared with other
methods.