Contrast enhancement using recursive mean-separate histogram equalization for scalable brightness preservation

– Histogram equalization – Preserving the original brightness to avoid annoying artifacts ‹ Bright preserving Bi-Histogram Equalization – Not handling well to avoid annoying artifacts ‹ Recursive Mean-Separate Histogram Equalization – Separating each new histogram further based on respective mean Abstract 3 / 28 ‹ Histogram equalization – Base on the probability distribution of the input gray levels – Significant change of the brightness – Not commonly using in consumer electronics such as TV – Necessary of the brightness preservation ‹ Bi-histogram equalization(BBHE) – Separating the input image's histogram into two based on its mean