Robust flicker evaluation method for low power adaptive dimming LCDs

• The proposed mSSD scheme separates the dimming flicker effects from the image sequence information for the robust dimming flicker evaluation.
• The proposed mSSD values are obtained by utilizing the differential images instead of the displayed images.
• A new figure of merit (FoM) is introduced to cover the dimming flicker as well as image qualities and power consumption.

This paper describes a robust dimming flicker evaluation method of adaptive dimming algorithms for low power liquid crystal displays (LCDs). While the previous methods use sum of square difference (SSD) values without excluding the image sequence information, the proposed modified SSD (mSSD) values are obtained only with the dimming flicker effects by making use of differential images. The proposed scheme is verified for eight dimming configurations of two dimming level selection methods and four temporal filters over three test videos. Furthermore, a new figure of merit is introduced to cover the dimming flicker as well as image qualities and power consumption.