Báo cáo hóa học: " Research Article Adaptive Motion Estimation Processor for Autonomous Video Devices" potx
Báo cáo hóa học: " Research Article Adaptive Motion Estimation Processor for Autonomous Video Devices" potx
... Systems
Volume 2007, Article ID 57234, 10 pages
doi:10.1155/2007/57234
Research Article
Adaptive Motion Estimation Processor for
Autonomous Video Devices
T. Dias, S. Momcilovic, N. Roma, and L. Sousa
INESC-ID/IST/ISEL, ... one for the QCIF and the one for the CIF for-
mat. The former format requires operating frequencies be-
low 25 MHz and the corresponding power con...
Báo cáo hóa học: " Research Article Improved Motion Estimation Using Early Zero-Block Detection" docx
... Corporation
EURASIP Journal on Image and Video Processing
Volume 2008, Article ID 524793, 8 pages
doi:10.1155/2008/524793
Research Article
Improved Motion Estimation Using Early
Zero-Block Detection
Y. ... H.264/AVC, interframe motion estimation is per-
formed for 7 different block sizes (denoted as modes),
varying among 16
×16, 16 ×8, 8 ×16, 8 ×8, 8×4, 4×8, and
4
× 4. The m...
Báo cáo hóa học: " Research Article Adaptive Transmission of Medical Image and Video Using Scalable Coding and Context-Aware Wireless Medical Networks" potx
... provides information regarding
the evaluation of the proposed platform using H.264 and
wavelet scalable coding for image and video data.
6. EVALUATION PLATFORM
In order to validate the adaptive ... saturation).
6.1. Evaluation results from H.264 video compression
For[ RS10] the evaluation of H.264 video coding, two video
sequences have been used for transmission corresponding
t...
Báo cáo hóa học: "Research Article Auction-Based Resource Allocation for Cooperative Video Transmission Protocols over Wireless Networks" ppt
... (kbps)
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Average PSNR (dB)
Low motion: proposed
Low motion: CBR
Mixed motion: proposed
Mixed motion: CBR
High motion: proposed
High motion: CBR
Figure 7: PSNR versus Bandwidth for Different Motion Activities.
To ... performance under different video content and different
level of motion activity in the video sequence, we compare
three di...
Báo cáo hóa học: " Research Article Crosstalk Channel Estimation via Standardized Two-Port Measurement" potx
... instance
m
0
and m, for example, it is assumed that P
z
(m) ≈ P
z
(m
0
)
for the FEXT case, and P
w
(m) ≈ P
w
(m
0
) for the NEXT
case. As before, we use the same notation for estimation
sequence ... missing data.
The changes in the estimation variance, seen in, for
example, Figure 15, as a larger variance for frequencies
below 1 MHz, can be explained with the aforementioned
1...
Báo cáo hóa học: " Research Article Smart Antenna UKM Testbed for Digital Beamforming System" potx
... generally used for
research which is a vehicle for further development, for
verification of algorithms, or ideas under real-world or
real-time conditions. This results in the requirement for
scalability, ... lab to evaluate system
performance. The DBF measurement result is presented
in this section. A single-tone test is performed for the
evaluation of the UKM testbed performance....
Báo cáo hóa học: " Research Article Reduced Complexity Channel Models for IMT-Advanced Evaluation" potx
... when the number of RVs in the model is reduced.
For the baseline model, there are 6 (for LOS) or 5 (for NLOS)
RVs, that is, 5 (for LOS) or 4 (for NLOS) random LSPs and
the random XPR. With SM-E, ... Wireless Communications and Networking
Volume 2009, Article ID 195480, 13 pages
doi:10.1155/2009/195480
Research Article
Reduced Complexity Channel Models for
IMT-Advanced Evaluation...
Báo cáo hóa học: "Research Article Improved Side Information Generation for Distributed Video Coding by Exploiting Spatial and Temporal Correlations" doc
... (BMA) for motion estimation.
However, motion vectors from BMA are often not faithful
to true object motions. Unlike classical video compression,
it is more important to find true motion vectors for ... approximate estimation of SI, and to obtain
the decoded WZ frame. Motion estimation for SI would be
more correct for smooth areas than edges, that is, less WZ
bits are us...
Báo cáo hóa học: " Research Article Distortion-Based Link Adaptation for Wireless Video Transmission" ppt
... transmitted off-line 50 times (for statistical
purposes) over the IEEE 802.11 PHY layer for a wide range
of fixed C/N power levels. For each sequence, for each GOP,
and for each C/N, the average received ... performance for 25 GOPs.
Table 2: Mean and standard deviation (calculated over the GOPs) of the estimation error (in percent) between the actual and the estimated
MSE, foreman....
Báo cáo hóa học: " Research Article Multiple Moving Object Detection for Fast Video Content Description in Compressed Domain" doc
... detection. Be-
fore describing the segmentation process, the motion analy-
sis that is first performed is discussed in more details.
4.1. Global camera motion estimation
In order to detect “foreground ... approximated motion masks estimated so far represent a
good guess for locating the foreground moving object shape
in P-frames. Nevertheless, using motion information alone
is not...