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In this paper, we proposed a backlight dimming algorithm for videos, aiming to achieve better video quality measured in video quality metric (VQM) with controlled power consumption. In order to avoid the complex computation of VQM in the testing process, a training procedure is performed to find prediction model. For each training video, a VQM result curve corresponding to different clipping points...
The backlight power saving for LCD is an important research topic, since the backlight is the main source of energy consumption. Typically, the backlight power saving is done by limiting the dynamic range of the displayed pixels; the image quality will decreased. And how to maintain the image quality becomes the important issue. In this work, we propose to use a well-known video quality metric called...
The video quality after source compression loss and communication channel loss is very important for user experience in consumer electronic. In this paper, we propose a rate-distortion optimization method considering not only source loss, but also channel loss. We modify the source Lagrangian function in the H.264 to further consider channel loss effects, measured by a packet loss visibility model...
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