کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
527501 | 869330 | 2007 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A new adaptive vertex-based binary shape coding technique A new adaptive vertex-based binary shape coding technique](/preview/png/527501.png)
This paper presents a new adaptive vertex-based coding scheme to improve the coding efficiency of the object shapes of a video sequence. We first smooth out the original contour using the property of perfect 8-connectivity, which reduces the number of vertexes without loss of quality. Then we propose top-down and bottom-up algorithms to select the vertex points. In the top-down scheme, we develop a new adjusting technique to measure the distortion. It is simple for both calculation and implementation, and the reconstructed shape has better quality. In the bottom-up scheme, we develop a new area-based measure that makes the insertion of a new vertex easy. Finally, we propose a scheme that employs multiple dynamic ranges to modify the object-adaptive vertex coding method. It improves the coding performance significantly.
Journal: Image and Vision Computing - Volume 25, Issue 6, 1 June 2007, Pages 863–872