Method and system for enhancing image quality

A system for image quality enhancement comprising:

• a median filtering module configured to perform adaptive weighted median filtering operation on each pixel of the image to output an intermediary image by removing impulse noise, said median filtering module is configured to:
• select a pixel value of the obtained image;
• form a window using all adjacent pixels around the selected pixel value;
• determine a pixel with maximum value and a pixel with minimum value in the window;
• compare value of the selected pixel with the minimum pixel value and the maximum pixel value;
• increase size of the window by including all pixels adjacent to the window until the selected pixel value is determined to be within minimum and maximum pixel value of the window;
• and
• upon determining the selected pixel value to be within the minimum and the maximum pixel value,
• determine a median of the window of the obtained image;
• determine weight of the median to obtain weighted median value;
• and
• determine an intermediate image using the obtained weighted median value
• an adaptive data selection module configured to generate filter coefficients,;
• and
• a guided image filtering module configured to filter the intermediary image using the generated filter coefficient and output a final image with enhanced contrast and preserved edges of the image.