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Tracking in High-Frame-Rate Imaging
Ultrasonic Imaging, 2010Speckle tracking has been used for motion estimation in ultrasound imaging. Unlike conventional Doppler techniques, which are angle-dependent, speckle tracking can be utilized to estimate velocity vectors. However, the accuracy of speckle-tracking methods is limited by speckle decorrelation, which is related to the displacement between two consecutive
Shih-Ying, Wu +2 more
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High frame rate video conversion
IP Streams, Control, and Production, 2014SMPTE is discussing high frame rates within the Ultra-High-Definition Television (UHDTV) Study Group and, in particular, conversions from high frame rates to today's integer and fractional standards. Although it seems an easy problem to upconvert and downconvert between frame rates when there is a simple multiplier, for example, between 119.88 and 59 ...
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Variable frame rate encoding via active frame-skipping
Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings., 2003Many rate control algorithms focus on the adjustment of quantisation values to retain a certain buffer level, and arbitrary frame-skipping is often needed to keep the buffer from overflow at very low bit-rates. In this paper, an active frame-skipping scheme is proposed to optimise the balance between spatial and temporal quality.
F. Pan +7 more
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Motion Compensated Frame Rate Up-Conversion for Low Frame Rate Video
2006Frame rate up-conversion is useful for low frame rate pictures such as movie. In case of conversion, basic motion compensation causes gap at covered area and uncovered area. To avoid the gap, we propose the motion compensation centered at the position of target. Fully motion compensated interpolation is possible in this method.
Kenji Sugiyama +3 more
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Frame Rate Adaptive Rate Model for Video Rate Control
2010 International Conference on Multimedia Communications, 2010This paper analyzes in theory the relationship of the coding bit-rate with the frame rate and the quantization step respectively, using the quadratic rate model. Based on the theoretical analysis, a frame rate adaptive rate model is proposed for video rate control.
Junhui Hou, Shuai Wan, Fuzheng Yang
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Perceptual Quality Driven Frame-Rate Selection (PQD-FRS) for High-Frame-Rate Video
IEEE Transactions on Broadcasting, 2016Video of higher frame rates (HFR) reduces the visual artifact in large screen display at the cost of a higher coding bit rate (or transmission bandwidth). In this work, we propose a perceptual quality driven frame rate selection (PQD-FRS) method that assigns a time-varying frame rate to a sequence so as to reduce its transmission cost. The objective of
Qin Huang +7 more
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Frame layer rate control for dual frame motion compensation
2010 18th International Packet Video Workshop, 2010Rate control plays an important role in video coding. When jump update dual frame motion compensation (JU-DFMC) is utilized in video coding, two kinds of frames are existed according to bit allocation, one is low quality frame (LQF), the other is high quality frame (HQF). For each current frame (LQF or HQF), one short term reference frame (STR) and one
Da Liu, Debin Zhao, Siwe Ma, Wen Gao
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Fast frame rate up-conversion based on multiple frames
2011 IEEE International Conference on Multimedia and Expo, 2011Frame rate up conversion (FRUC) can be used to enhance the visual quality by increasing the frame rate without extra data. In this paper, we propose a fast and efficient FRUC algorithm for H.264 coded image sequences. The candidate motion vectors of an interpolated frame are chosen from the collocated and spatially adjacent blocks.
null Shih-Hsuan Yang, null Chia-Chi Yang
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High Frame Rate Psychophysics: Experimentation to Determine a JND for Frame Rate
SMPTE Motion Imaging Journal, 2017In past research at the Rochester Institute of Technology (RIT), a temporal texture space was defined. It was used to classify what attributes contribute to the perceived motion quality of stroboscopic reproductions. One of these attributes was determined to be the content’s captured and displayed frame rate.
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Fluoroscopic Frame Rates: Not Only Dose
American Journal of Roentgenology, 2014AJR:203, September 2014 Selecting and using the fluoroscopic dose rate that optimizes the balance between aspects of image quality and patient dose is important to patient management. In this article, “dose” and “dose rate” are used in a generic sense.
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