Device for measuring the angle of turn of an object with respect to a reference direction

1994 ◽  
Vol 37 (9) ◽  
pp. 1029-1032
Author(s):  
Yu. K. Neumyvakin ◽  
V. V. Bush ◽  
M. I. Perskii ◽  
A. N. Sukhov
Keyword(s):  
Reference Direction

Intrinsic Reference Direction in Sequentially Learning a Layout

2007 ◽  
Author(s):  
Xianyun Liu ◽  
Weimin Mou ◽  
Timothy P. McNamara
Keyword(s):  
Reference Direction

A Fast Algorithm for Motion and Disparity Estimation Based on the Reference Directions of Neighboring Macroblocks

2013 ◽  
Vol 846-847 ◽  
pp. 1201-1204
Author(s):  
Xiang Jun Kong ◽  
Yan Zhao ◽  
Qian Fan ◽  
Shi Gang Wang ◽  
He Xin Chen
Keyword(s):  
Video Coding ◽  
Fast Algorithm ◽  
Estimation Algorithm ◽  
Experimental Results ◽  
Disparity Estimation ◽  
Reference Direction ◽  
Current Reference ◽  
Coding Quality ◽  
Comparison Results

As for JMVC (Joint Multi-view Video Coding), when executing motion and disparity estimation simultaneously, the implicit correlation of reference directions between current and neighboring macroblocks is neglected, and this will lead to useless searching. To reduce this redundancy, we propose an estimation algorithm which sets search ranges properly by exploiting the mentioned correlation. The proposed algorithm first gets the reference directions of macroblocks in the left, top and top right direction of current macroblock, and compares them with current reference direction, then sets search ranges by the comparison results, executes motion and disparity estimation in the new ranges at last. Experimental results show that the proposed algorithm can save 28.98%- 46.30% of coding time without degradation of coding quality comparing to JMVC.

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