this qualitative study has been done with the final objective of exploring the in-crisis firms’ turnaround process, using a systematic plan of grounded theory. so, open 10 interviews were conducted exclusively with managers of listed (accepted) companies’ in tehran stock exchange experiencing financial crisis during 2006-2012 and they have been successful in turnaround. the results of analysis ...

In this paper, an improved low complexity algorithm for 3D-HEVC is proposed to reduce the computational complexity. The basic idea of the method is to utilize the boundary homogeneity of texture and depth map which is generated by Laplacian filter. Firstly, based on the evaluation result of the boundary homogeneity, an early coding unit (CU) decision method is proposed to achieve the low comput...

H.264 is a highly efficient and complex video codec. The complexity of the codec makes it difficult to use all its features in resource constrained mobile devices. This paper presents a machine learning approach to reducing the complexity of Intra encoding in H.264. Determining the macro block coding mode requires substantial computational resources in H.264 video encoding. The goal of this wor...

In H.264/AVC standard, the intra-frame prediction scheme is employed for better coding efficiency. Using the already encoded adjacent upper and left pixels, the intra prediction is performed. In this paper, we present an improved intra prediction scheme of H.264/AVC. By taking into account the error of the adjacent bottom and right pixels in intra mode decision, our scheme shows better results ...

Advisor: Khalid Sayood This dissertation is focused on the problem of rate allocation in a resource constrained environment and robustness of video coding over noise channels. A new rate allocation scheme that combines the traditional PCRD-Opt algorithm with the ρ domain analysis is proposed for wavelet based image coders. The proposed scheme provides competitive performance as compared with th...

High Efficiency Video Coding (HEVC) can significantly improve coding efficiency by using 35 intra prediction modes, which lead to a substantial increase in coding complexity yet. In this paper, a fast intra mode decision method for HEVC based on DCT is proposed. The algorithm estimates the texture direction of the prediction block (PB) by using discrete cosine transform and reduces the number o...

—High Efficiency Video Coding (HEVC) exploits quad-tree structured Coding Unit (CU) to improve compression efficiency. It saves about 50% coding bits as compared with the former standard H.264/AVC high profile. However, the computational complexity is dramatically increased for more partition blocks and coding modes supported in HEVC. In this paper, a fast CU decision algorithm is proposed to ...

The emerging High Efficiency Video Coding (HEVC) standard provides equivalent subjective quality with about 50% bit rate reduction compared to the H.264/AVC High profile. However, the improvement of coding efficiency is obtained at the expense of increased computational complexity. This paper presents a fast intra-encoding algorithm for HEVC, which is composed of the following four techniques. ...