Fast intermode decision algorithm based on general and local residual complexity in H.264/AVC
نویسندگان
چکیده
The state-of-the-art video coding standard H.264/AVC achieves significant coding performance by adopting variable block sizes for motion estimation (ME) and mode decision. However, this technique brings out high computational complexity since the optimal mode is determined by exhaustively performing rate-distortion optimization (RDO) on each coding mode with different block sizes. In this paper, the fast intermode decision algorithm is proposed to reduce the computational complexity. Based on the high correlation between the residual error of ME and the optimal block size, general residual complexity (GRC) and local residual complexity (LRC) are defined. According to MB activity evaluated on GRC and LRC, candidate intermodes are determined and RDO processes are only performed on selected intermodes. The experimental results demonstrate that the proposed algorithm achieves time saving by 63% on average with negligible degradation of coding efficiency.
منابع مشابه
Fast Mode Decision for H.264/AVC Encoder Based on Interblock Correlation
The up-to-date video coding standardH.264/AVC could achieve higher encoding performance compared with previous versions since it employs many tools to increase the coding accuracy, particularly the rate-distortion optimization technique for mode decision. However, an extremely high computational complexity isproduced because all possible combinations of modes are calculated in order to find the...
متن کاملFast HVS-Based Mode Decision for H.264/AVC Using Just-Noticeable-Difference
In this paper, we propose a fast HVS-based mode decision algorithm to reduce the computational complexity of H.264/AVC. First, we use the Just Noticeable Difference (JND) visual model to analyze the residual data, then utilize the result to forecast the structure in an macroblock. This method improves the computational efficiency by reducing the variable modes, and also maintains performance qu...
متن کاملClassified Region Algorithm for Fast Intermode Decision in H.264/AVC Encoder
H.264, MPEG-4 Part 10, is the latest digital video coding standard that achieves very high data compression by using several new coding features. One of the new features is variable block sizes for interframe coding to increase compression efficiency. However, to achieve this, the H.264 encoder employs a complex mode decision technique based on rate-distortion optimization (RDO) that requires h...
متن کاملFast Motion Estimation and Intermode Selection for H.264
H.264/AVC provides various useful features such as improved coding efficiency and error robustness. These features enable mobile devices to adopt H.264 standard to achieve effective video communications. However, the encoder complexity is greatly increased mainly due to motion estimation (ME) and mode decision. In this paper, we propose a new scheme to jointly optimize intermode selection and M...
متن کاملالگوریتم جدید انتخاب حالت داخل فریمی سریع در استاندارد کدگذاری ویدیویی H.264/AVC
By the increasing of video communication in portable and functional devices, encoders design with low complexity and high performance are required. H.264 / AVC standard offers higher compression efficiency than previous standards. But this standard by employing several powerful coding techniques, considerably increased complexity at the encoder. This paper presents a new algorithm to reduc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- EURASIP J. Image and Video Processing
دوره 2013 شماره
صفحات -
تاریخ انتشار 2013