Making Image More Energy Efficient for OLED Smart Devices

Algorithm 1

Pseudocode of ALS algorithm.

Adjusting luminance and saturation of NON-ROI of the image

Input: original image

Output: energy-efficient image

Algorithm:

()  ← Get NON-ROI coordinate matrix of the image by ROI Abstraction;

() ← Calculate the value of grading regulation by dividing the distance from ROI to the image boundary;

()  ← Get the gradual changing matrix set by dividing into matrix sets;

() ,  ← Assign initial values to and

()  for   to   do

()   for   to   do

()    adjust the luminance of each pixel by Eq. (7);

()    adjust the saturation of each pixel by Eq. (8);

()   end for

()   end for

()   if check MSSIM meeting use’s requirements is true

    combine and of and output image;

()   else

()     update and , repeat (), (), (), (), (), ();

()   end if