TY - JOUR
T1 - High visual quality particle based frame rate up conversion with acceleration assisted motion trajectory calibration
AU - Tsai, Tsung Han
AU - Lin, Hsueh Yi
N1 - Funding Information:
Manuscript received April 27, 2011; revised September 17, 2011; accepted January 25, 2012. Date of current version May 11, 2012. This work was supported by National Science Council, Taiwan, R.O.C., under Contract NSC100-2220-E-008-001.
PY - 2012
Y1 - 2012
N2 - Traditionally, frame rate up conversion can be realized by either bidirectional or unidirectional approaches. Bidirectional approach suffers from motion ambiguity. However, unlike unidirectional approach, bidirectional approach does not suffer from holes and occluded regions. In this article, the particle-based frame rate up conversion algorithm is proposed by combining hierarchical motion vector field construction stage and particle-based motion trajectory calibration stage. First of all, color-oriented adaptive cost function is applied in the hierarchical motion vector field construction stage to retrieve initial motion vectors. Second, the retrieved motion vectors are memorized and calibrated by minimizing the distance between interpolated block and particle trajectory intersecting points. Besides the minimization, joint cost-function evaluation further prevents untrue motion vectors from being selected. According to the experiment results, proposed pixel-based frame rate up conversion outperforms existing works by 0.9-3.9 dB. On the other hand, the computation complexity of proposed work is less than existing bilateral approaches by 5-100, while it is larger than the unidirectional approach by 3-100, according to the target video resolution. This concludes a high visual quality frame rate up conversion design.
AB - Traditionally, frame rate up conversion can be realized by either bidirectional or unidirectional approaches. Bidirectional approach suffers from motion ambiguity. However, unlike unidirectional approach, bidirectional approach does not suffer from holes and occluded regions. In this article, the particle-based frame rate up conversion algorithm is proposed by combining hierarchical motion vector field construction stage and particle-based motion trajectory calibration stage. First of all, color-oriented adaptive cost function is applied in the hierarchical motion vector field construction stage to retrieve initial motion vectors. Second, the retrieved motion vectors are memorized and calibrated by minimizing the distance between interpolated block and particle trajectory intersecting points. Besides the minimization, joint cost-function evaluation further prevents untrue motion vectors from being selected. According to the experiment results, proposed pixel-based frame rate up conversion outperforms existing works by 0.9-3.9 dB. On the other hand, the computation complexity of proposed work is less than existing bilateral approaches by 5-100, while it is larger than the unidirectional approach by 3-100, according to the target video resolution. This concludes a high visual quality frame rate up conversion design.
KW - Acceleration-based motion trajectory prediction
KW - bidirectional motion estimation
KW - frame rate up conversion
KW - liquid crystal displays (LCDs)
KW - pixel-based frame rate up conversion
KW - unidirectional motion estimation
UR - http://www.scopus.com/inward/record.url?scp=84861161936&partnerID=8YFLogxK
U2 - 10.1109/JDT.2012.2186555
DO - 10.1109/JDT.2012.2186555
M3 - 期刊論文
AN - SCOPUS:84861161936
SN - 1551-319X
VL - 8
SP - 341
EP - 351
JO - IEEE/OSA Journal of Display Technology
JF - IEEE/OSA Journal of Display Technology
IS - 6
M1 - 6198752
ER -