In this paper, we present an adaptive deblocking filter to improve the video quality for high efficiency video coding (HEVC) scheme. The HEVC standard is a hybrid coding scheme using block-based prediction and transform encoding/decoding. At the decoding step, the boundary of any two adjacent blocks causes visual discontinuities called blocking artifacts that can be removed using deblocking filter. Conventional approaches, including the HEVC standard, tend to remove those artifacts using two offset parameters that are defaulted to 0. However, such a choice is not necessarily suitable to encode/decode all video sequences. The proposed approach reduces an exhaustive search among a set of candidate offsets to eventually select the best offsets adaptively (i.e., for each frame) according to some characteristics of the data sequences. Improvements are shown using the proposed approach in terms of ratedistortion (RD) performance as opposed to the HEVC standard without changing the compression ratio and with negligible change in the encoding/decoding time.
Abstract. In this paper, the implementation method for encoding the high resolution videos using high efficiency video coding (HEVC) standard is introduced with a new approach. The HEVC standard, successor to the H.264/AVC standard, is more efficient than the H.264/AVC standard in the encoding high resolution videos. HEVC has been designed to focus on increasing video resolution and increasing the use of parallel processing architectures. Therefor, this approach merging all traditional configuration files used in the encoding process into only one configuration file without removing any parameters used in the traditional methods. Improvements are shown using the proposed approach in terms of encoding time as opposed to the traditional methods by reducing the access time by half which resulting from reducing the data exchange between the configuration files used in this process and without changing the rate-distortion (RD) performance or compression ratio.
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