The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper proposed a superresolution (SR) reconstruction method by combining the cross-diamond-hexagonal search (CDHS) block-matching algorithm (BMA) and the simple block-wise motion vector selection (BWMVS) strategy to obtain stable and high quality reconstruction results. The experimental results showed that the reconstruction quality of CDHS BMA is comparable with full search BMA but the computation...
H.264/AVC the latest international video coding standard achieves higher compression efficiency than previous video coding standards such as MPEG-4 and H.263. However, this performance gain comes at the cost of an increased computational complexity. To achieve a high coding efficiency, H.264/AVC employs complex mode decision techniques based on rate-distortion optimization, the computational complexity...
A low complexity spatial-domain error concealment method is proposed. The edges in lost MB's are detected and recoveried by using neighborhood MB's' gradient data. The lost MB is divided into several smaller subblocks, each pixel in a subblock is directionally interpolated from representative boundary pixels adjacent to the subblock. Experimental results show that the proposed algorithm can recover...
In this paper, we present a mesh-based motion estimation method in the wavelet domain. The Overcomplete Discrete Wavelet Transform (ODWT) is utilized to overcome the shift-variant property of the Discrete Wavelet Transform (DWT). Due to the good adaptation of non-translational motion, triangular mesh motion estimation is applied in the low frequency subband of the current frame. The initial motion...
In this paper, a novel scheme for scalable distributed video (SDVC) is introduced, which dealing with quality scalabilities. More specifically, efficient H.264/AVC intra-frame coding is used to obtain a base quality layer, the residual between the base layer and the original video is encoded by distributed video coding (DVC) with SW-SPIHT to generate the enhancement layer. The side information is...
We designed a real time moving object extraction and behavior analysis system to detect if any abnormal behavior like intrusion, halt, and wall climbing happened. Much work in the area of motion based video object segmentation is being done in the pixel domain which exploits the visual attributes and motion information. Given most existing images and videos stored in the compressed form, the specific...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.