Title Visual quality optimization techniques applied to rate - control in SVC

Visual quality optimization techniques applied to ratecontrol in SVC Type Master degree thesis Peoples 1 person Reference Tea Anselmo – [email protected] Daniele Alfonso – [email protected] Deliverables Final Report, Presentation and Code Description In digital video coding, the main aim of bit-rate control is to provide a bit-stream with a final data rate as close as possible to a predefined target one, by simply adapting the quantization parameter to the video sequence complexity. However, in case of low bit-rate applications or highly complex sequences, the bit-rate control would impose a too high quantization step thus inevitably compromising the visual quality of coded pictures. In the depicted case, it is convenient the application of a Frame Skipping strategy. The Frame Skipping technique adaptively skips whole coded pictures, so the encoder could allocate more bits for other frames so as to perform higher image quality and reduce rate criticisms without losing bits. Moreover, the human visual system is particularly sensitive to quantization artefacts and frame rate discontinuity, therefore skipping frame selection must balance quality and rate to avoid visual fluctuation of image quality. This thesis work implies: