The key frame interpolation algorithm by conditional choosing quaternion interpolation equations

2015 ◽  
pp. 677-680
2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Lingling Zi ◽  
Junping Du ◽  
Qian Wang

The technology of frame interpolation can be applied in intelligent monitoring systems to improve the quality of surveillance video. In this paper, a region-guided frame interpolation algorithm is proposed by introducing two innovative improvements. On the one hand, a detection approach is presented based on visual correspondence for detecting the motion regions that correspond to attracted objects in video sequences, which can narrow the prediction range of interpolated frames. On the other hand, spatial and temporal mapping rules are proposed using coherency sensitive hashing, which can obtain more accurate predicted values of interpolated pixels. Experiments show that the proposed method can achieve encouraging performance in terms of visual quality and quantitative measures.


2011 ◽  
Vol 79 ◽  
pp. 53-58 ◽  
Author(s):  
Quan Liang ◽  
Yong Zhang Wang

In order to improve the efficiency of integrated impeller rough machining and make up the deficiency of commercial computer aided manufacturing (CAM) software in five-axis plunge milling, a ruled surface impeller plunge milling method was presented. Boundary vectors were generated according to an impeller’s ruled surface blade. Quaternion interpolation algorithm was used to interpolate cutter axes according to these boundary vectors. The computing formula of row spacing and stepover are deduced to ensure high material removal rate and machining efficiency. Hub surface and a blade finishing cutting path were also generated. Based on the algorithm, an integrated special impeller plunge milling CAM software was independently developed. The generated cutting path was simulated and also carried out practically. Simulation and experimental results show that this method improves the efficiency of impeller parts rough machining to a certain extent.


2008 ◽  
Vol 17 (05) ◽  
pp. 835-844
Author(s):  
ZHUO XUE ◽  
KOK-KEONG LOO ◽  
JOHN COSMAS ◽  
PIK-YEE YIP

In this paper, a new frame rate up-conversion (FRC) using Backward Multiple Reference Frame Motion (BMRF) compensated interpolation (MCI) algorithm is proposed. The BMRF algorithm has been compared with two most common MCI methods, Temporal Linear (TLIN) and Bidirectional MCI (BID) used in FRC, in the aspect of PSNR, perceptual quality, and computational complexity. The simulation results clearly showed that BMRF presented a trade-off solution between computation and interpolation quality. By using simple weighted frame interpolation between multiple frames, it reduced computation rapidly while keeping similar interpolation quality when compared to the BID method. The simplicity of the BMRF algorithm made it suitable for either software or hardware implementation essential for real-time FRC applications.


Sign in / Sign up

Export Citation Format

Share Document