We are researching binaural reproduction over line array loudspeakers as one of the alternative ways of 22.2
multichannel sound reproduction in the home. We developed a binaural reproduction processor and a pair of line array
loudspeakers. The binaural reproduction processor transforms audio signals of 8K Super Hi-Vision (8K) programs to binaural
signals in real time. The pair of line array loudspeakers, nine loudspeaker units are contained in each housing, are set immediately
above and below the TV screen. The upper line array loudspeaker reproduces binaural signals of surround channels in the top
layer of 22.2 multichannel sound and the lower one reproduces that of the middle layer’s.
Most of the latest supervised methods of person re-identification (PRID) cannot be used for the situations in which
the sufficient amount of training data is not available. In this study, we propose a completely unsupervised method of PRID
using partial correlation coefficient, and verify its effectiveness by some experiments.
Person authentication using periocular images has a great potential for recognizing pedestrians in surveillance
applications. This paper proposes a periocular recognition algorithm using phase-based correspondence matching with texture
enhancement. Texture enhancement of periocular images can significantly improve recognition performance of periocular
recognition. Through experiments using a public database, we demonstrate the effectiveness of the proposed algorithm
compared with conventional algorithms.
This paper presents a sound field expansion method for the interactive viewing of panoramic videos based on a
spectral modification between multiple channels, and we developed a panoramic video player for smartphones with the
stereophonic sound changing synchrony with the range of views.
NHK has been conducting research on advanced terrestrial transmission system combined dual-polarized
MIMO and high-order-modulation OFDM, in order to transmit large volume contents such as 8K Super Hi-Vision. This
paper reports the required field strength measured by field experiments in Hitoyoshi area, during 2013-2017.
Japan Broadcasting Corporation (NHK) has been researching terrestrial transmission for 8K Super Hi-Vision
(8K SHV). In the actual SFN environment, we succeeded in carrying 8K SHV signals by using an advanced SFN technology
and an 8K HEVC encoder/decoder.
Wideband transmission system using FEC with lower code rate and successive interference canceler
technology can improve robustness against co-channel interference so that it would be expected to improve a frequency
efficiency of utilization. This paper reports possibilities and problems in case of adopting wideband system to broadcast
model in japan.
We have proposed
to receive content in
paper describes the method
And we report the result of
for verifying the method
Bit selection method in 5:9 modulation code of holographic data storage was considered. By increasing the correlation between the code map of 5-bit and 9-bit, both error rate and iteration characteristics were improved when using low density parity check code error correction.
We designed an optical roll-off filter which cuts the high frequency components of the data page with suppression of
the interpixel interference. We experimentally showed that this filter could increase the SNR of the reproduced data comparing
with the use of conventional rectangle spatial low-pass filter.
A current-driven domain wall(DW) motion in magnetic nanowire has been utilized in MRAM. In order to reduce
the driving current of DW, we estimated the DW velocity dependence of the applied magnetic field direction from a simulation.
Our analyses indicate that in-plane field is effective for fast DW driving.
This paper takes up 2-component mixture spherically-symmetric Gaussian distribution model with signal’s degradation and
sparsity, for the statistical modeling of DFT coefficients of video signals. To abstract the essence from these massive modelling results,
clustering in the model space is indispensable. This paper discusses the centroid computation in the model space, requisite for the clustering.
This paper take up the estimation of probability distribution model parameter for the mean separation type 3D Short-Time
DFT coefficients. This paper also shows the simulation results which estimation the model parameters for the noisy moving images.
Simulation results shows that the model parameter estimation is possible to some extent.
In late years, anyone comes to be able to take photographs easily. However, it is difficult to take photographs with
good composition like what professional photographers take. In this work, we propose a novel method for generating a set of
images with optimized composition from an omnidirectional panoramic image.
Broadcasters create diverse TV programs. We have considered a system to create encounters with valuable
information by providing data related to the program redesigned in appropriate with user's daily behavio
r using smartphone
and IoT devices. In this study, we developed a prototype service for automobile users.
We surveyed actual usage of online video services on TV and smartphone by web-based questionnaire for a
thousand people to understand needs of cast functionality. In the result, the cast functionality is not popular as it is now,
whereas we concluded that there is higher potential needs especially in users of online video services on smartphone.
We are researching 64APSK coded modulation for the purpose of expanding the transmission capacity for
satellite transmission. In the conventional 64APSK coded modulation design based on channel capacity, the influence by
non-linear transmission path was not considered. In this report, we describe the design method considering non-linear
distortion and equalization performance and show that better transmission performance than the conventional one can be
achieved with the proposed method.
Seam carving is one of the techniques to resize the image while keeping the impression. In this paper, we
propose a method of Seam Carving for complex background video image. We utilize a method of object detector “Binarized
Normed Gradients for Objectness” in order to extract the object area in the videos.
Optical flow is estimated by imposing invariant conditions of brightness and its gradient. However,
it is difficult to adjust the weights of these conditions due to the convenience of numerical calculation. In this
paper, we consider the adjustment of the weights based on the estimation method that guarantees numerical
Automatic crack detection from concrete surface image has been put to practical use. However, Increasing
the resolution of the image requires high processing costs. In this paper , we propose a method of concrete crack
detection for high-resolution image. We reduce processing costs by detect ion crack region using hessian matrix.
We propose a method for estimating reflectance spectra from tristimulus values observed under a number of
illuminations. We formulate the estimation problem as a constrained Eucliean norm minimization, and show the analytic
solution. Experimental results show that the proposed method improves the accuracy of the estimated reflectance spectra
compared with the previous method.
In this research, we propose the color-correction method that transforms from images including near-infrared light to normal images without infrared light. Because colors of clothes remarkably change in images including infrared light, we classify the image into the area and other area, and correct colors in these areas separately.
In the next-generation DTTB, 4096QAM is used to improve the transmission capacity. In the detection, the high
accuracy of channel estimation is required. In this paper, the reception characteristics using channel estimation scheme of
amplitude and delay time are evaluated. As the result, it is possible to adapt the channel estimation scheme in the next-generation
This report proposes a method of reducing the power consumption of dedicated emergency wake-up receiver for ISDB-T broadcasting
signals. Both the misdetection and false alarm probabilities increase as decreasing the reception power, then the receiver tends to wrong
results. The proposal reduces the power consumption by determining these probabilities.
We have developed MPEG
encoder which support
resolution audio streams.
available in MPEG
4 ALS Simple Profile and optimizing
(Digital Signal Processor)
time processing for high
resolution audio streams.
t is important
for runners to know the
here the key parts
in runner’s form are
In this study, we prop
ose a system to analyze the
m automatically, focusing
the position of
joints in the
sing image processing
We developed the head pose estimation system for football players. Its purpose is to obtain useful metadata for
program production in broadcasters. In this paper, prototyping and program production application of the system are introduced.
From this prototyping, a series of production procedure on the system is confirmed.
method for analysis of soccer
. In this research
method for expanding 2D
region into 3D
dominant region. Furthermore, we
success probability of pass
In this report, depth of field processing of existing images is performed using depth images. We propose an image processing
method that automatically generates depth images and performs processing based on the depth of field on software, so that images are easily
generated without requiring special equipment.
Super resolution (SR) is a technique to create a high resolution image from low resolution images. Enhancer is, a
conventional image quality improving method, which uses a straight forward one path signal processing. In contrast most of SR
techniques need iterations to improve images. Super resolution image reconstruction (SRR) and learning based super resolution
(LBSR) are typical SR methods and require the iterations to create high resolution images. Similar technologies have been
discussed in astronomy. Researches have been trying to decrease the out of focus blur in astrophotography by blind deconvolution
(BD). Although BD is not well known among broadcasting engineers, BD has been used in astrophotography to decrease the out
of focus blur for more than 40 years. BD creates high resolution image by a completely different algorithm from SRR and LBSR.
In this report BD merits against SRR and LBSR are discussed.
We propose a method for depth super-resolution using spatio-temporal correlation of RGB-D videos. The use of spatio-temporal correlations of RGB-D video allows us to suppress false artifacts caused by the color image in synthesizing super-resolved depth images. Our experiments demonstrate the effectiveness of our method.
We propose a novel method of high-quality view interpolation without disclosing entire 3D information like DIBR
based on prediction using stereo matching. In this paper, by effectively embedding disparity information only on unpredictable
regions in multi-view images as frequency components, our method maintains compatibility with applications using no 3D
The biggest objective and subjective loss of quality using the widely spread bicubic algorithm is at the supposed
sharp edges of an image. This study focuses on developing an algorithm to restore the sharpness by using un
by the intensity of edges in each area.
Testing this algorithm on 97
standard images results in up to
1dB improvement PSNR in nearly all cases, showing that the quality improved objectively. Subjective testing results favoured
all the filtered i
mage compared to the bicubic picture.
This article presents our proposed multiplexing scheme for IP packets in next-generation terrestrial broadcasting system, which is now under development in Japan. It also shows our designed modulator interface from broadcasting station to SFN of transmitters that supports the IP multiplexing scheme. The functionalities of multiplexing IP packets are confirmed with our implemented equipment.