1. A method for determining control parameters for image enhancement, the method comprising acts of: receiving a plurality of image frames; calculating an adaptive threshold value based on a dynamic range of a current image frame of the plurality of image frames and a dynamic range of a plurality of previous image frames prior to the current image frame; determining whether a pixel slope distribution of a pixel window of image data of the current image frame exceeds the adaptive threshold value; determining, responsive to a determination that the pixel slope distribution exceeds the adaptive threshold value, a spectrum estimation coefficient for the current image frame based on spectral components of the pixel slope distribution; and determining one or more control parameters for enhancement of the image data of the current image frame based on the spectrum estimation coefficient, the one or more control parameters relating to filtering parameters for adaptive enhancement of the image data of the current frame.