Xi’an University of Science and Technology Xi’an 710054 China;
Xi’an University of Science and Technology Xi’an 710054 China;
Shanghai Pudong Development Bank Application Development Service Sub-center Xi’an 710054 China;
Xi’an University of Science and Technology Xi’an 710054 China;
color image enhancement; non-uniform illumination; low illumination; weighted guided image filter(WGIF); color restoration;