Digital terrestrial broadcasting has three methods of FDM/TDM/LDM to multiplex the layers for stationary and mobile reception. This paper compares these methods based on theoretical analysis and simulation evaluation results.

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Toward the advancement of broadcasting services, t he authors are conducting research on the next generation terrestrial broadcasting. Transmission parameters of the proposed specification, such as the modulation scheme and code rate, are described in TMCC signal . Therefore, the transmission performance of TMCC signal is required to be superior to that of data signal . This paper describes the transmission scheme of TMCC signal and the evaluation results of the reception performanc e by computer simulations .

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In the 4K/8K satellite broadcasting, MPEG-H MPEG media transport is adopted as an internet-protocol-based multiplexing scheme, which enhances the applicability of hybrid content delivery using both broadcast and broadband. The utilization of hybrid content delivery is an important requirement also in the development of next-generation terrestrial broadcasting. This is especially true for mobile reception because receiving condition changes constantly by user’s mobility and receiving terminals are highly personalized. In this paper, we implement and evaluate a mechanism of seamless video compensation via cellular network to maintain user experience.

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We implement ed a system visualizing motion and trajectory of a target in quasi - 3d form and obtained useful information from motion and trajectory of a ir bounce backhand in ultimate . This paper show s that our system i s useful for athle tes when they look back their throws and trajectories of flying disk .

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We developed a system for visualizing stone trajectories in curling games for live broadcasts. Robustly tracking a moving stone from curling video sequences is difficult because the stone is frequently hidden by the brushes held by the players and the players’ bodies during their sweeping actions. We thus propose an online machine learning method for tracking a curling stone to deal with changes in its appearance. The method creates a candidate-object image, which eliminates background noises, and is used as input to the kernelized correlation filter (KCF) tracker. The developed system was used at All Japan Curling Championships 2017 to display stone trajectories during live broadcasts.

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We have constructed a stone position detection system based on image analysis. The feature of this system is detecting curling stone position even if the input image is not an orthoimage. In the 2017 Winter Asian Sapporo Games, we provided information of curling stone position using developed system for spectators who are watching the curling game at stadium.

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We propose a method to identify bike racer s in race video s based on the posture information obtained by Realtime Multi - Person 2D Pose Estimation . In the proposed method, it is verified that higher accuracy of racer identification when the pedaling cadence is taken into consideration.

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Recently, a new motion compensated prediction method that performs template matching between reconstructed images is explored for efficient video coding. Though the method can be carried out at the decoder side and thus requires no motion information to be transmitted, its application to a real-time system is practically limited due to complexity reasons. To cope with this problem, a fast template matching algorithm using a product quantization framework is proposed in this paper.

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In this study, we newly propose a fast rotate template matching(TM) prediction method without decreasing the coding efficiency. The proposed method adaptively uses TM prediction and HEVC intra prediction, and skips th e TM matching procedure based on the local edge intensity. Experimental results show that the proposed method can reduce the computation time up to 30% without picture degradation.

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In this paper, we propose a method for fast block partitioning in HEVC using convolutional neural network. To reduce encoding complexity, o ur method applies trained convolutional neural network model to dete rmine the shape of block partitioning from original image. W e achieved significant reductio n in encoding complexity with around 3% bitrate increase

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We previously proposed a lossless coding method for color video signals in RGB 4:4:4 format. In this method, a color signal of the target pixel is predicted using not only the same color of the current and motion-compensated past reference frames, but also the other colors of the current frame if they are available. In this paper, use of another reference frame, whose color signal is extrapolated from the previous frame based on pixel-wise motion estimation, is examined to improve prediction accuracy.

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With the improvement of the performance of game machines, expression of blood , however, there is few examples expressing the change of blood states as time passes . W e propose a method simulating changes in the blood states over time and aim for more realistic representation of blood using the SPH method

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We propose a simulation method of corrosion and deformation of 3D iron objects by using 3D automaton. Our method enables to simulate progressive corrosion that causes a hole in an iron plate.

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This research uses image materials independently created in France and Japan to carry out a viewing experiment where we evaluated and analyzed the trends and differences in subjects from each country's sensory reaction to the images. In particular, citing text from literary works, cutting the metaphorical expressions from each scene into parts for comprehension and using this as a hint for the interpretation of image metaphors. Our analysis showed that the vast majority of subjects were able to correctly interpret metaphorical expressions in the image metaphors and that each individual expressed clear thoughts and ideas.

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A h uman perceives object appearance based on cross - modal senses . In this study, we model the cross - modal perception of t ransparency by investigating the interaction b etween sounds and g raphics. We conducted cross - modal transpar ency evaluation experiments using sounds and g raphics stimuli . Then we constructed a cross - modal transparency model by analyzing the experimental results

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The optical transmitt ing module we have researched for underwater optical video transport system so far has a problem that it can obtain neither sufficient optical modulation depth nor the optical receiving efficiency for the stable tracking. W e developed a n optical transmitter using the current mi rro r circuit and an optical receiver with high - sensitivity by arranging LEDs in a donut shape on the Fresnel lens. We believe that this tra n smitting module can solve the problem

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In mobile communication, owing to decrease FdTs(Normalized Maximum Doppler Frequency), it is necessary to shorten time domain OFDM(Orthogonal Frequency Division Multiplexing) symbol. For realize keeping bitrate, we made OFDM decoder what have function correcting Doppler shift and receive system what use space diversity by distributing antenna. we realized 10Mbps wireless communication by 5.7GHz/5MHz bandwidth OFDM.

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An atomic frequency standard is used to get an accurate frequency.However, since it is expensive, a low-cost oscillator is desirable. In this paper we describe the frequency stability of the digital terrestrial television broadcasting waves and examine whether it can be utilized as a frequency highly accurare oscillator.

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DTTB (digital terrestrial television broadcasting) signals are high accuracy and high stability waves. In this paper, we propose a frequency standard synchronized with DTTB signals, and we have made experiments of PLL. We describe the accuracy and the stability of the proposed frequency standard.

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In our previous study, a block-adaptive spatio-temporal prediction technique that exploits both intra and inter frame correlations simultaneously was investigated for efficient video coding. In this paper, we extend the technique to use both past and future reference frames like the bidirectional prediction method. Moreover, an additional reference frame which is interpolated in a temporal direction based on pixel-wise motion estimation is utilized in the prediction technique.

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Recently, a dictionary design method based on multi-class K-SVD has been studied for application in highly efficient image coding. In this research, we analyze statistical distribution of sparse coefficients theoretically and experimentally, and newly propose an adaptive entropy coding method for the sparse coefficients’ position and magnitude based on the number of non-zero coefficients of the block to be coded.

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In this paper, we newly propose a frame interpolation method using transformation matrices generated by deep neu ral network. The matrices can deal with many geometric transformations such as arbitrary precision motion /zoom compensation, luminance compensation and blur compensation. Experimental results show that the proposed CNN - based interpolation method gives better performance for video seque nces with small motion than the conventional HEVC - based one .

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This paper presents an analysis of effectiveness on the luma adaptive quantization for ITU - R Rec . BT.2100 Hybrid log - Gamma (HLG) transfer characteristics. The luma adaptive quantization was originally derived t o comp ensate the observed redistribution of code levels between bright and dark image areas associated with the High Dynamic Range (HDR) transfer characteristics. In the analysis , Standard Dy na m ic Range (SDR) signals are converted into HLG container . The observe d linear relationship between the code levels associated with the BT.709 and HLG suggests that the luma adaptive quantization is not necessary for HLG and endorses the premediated backward compatibility of HLG to SDR.

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In this paper, we propose a method to represent images reflected on multiple surfaces of a cubed glass. In the previous metho d we proposed before, r eflected images were drawn on limited surfaces . Therefore, we show that the proposed method can repres ent reflected images on any surfaces of a cubed glass.

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Recently, practical application of 3D scanners promotes use of point cloud. It is necessary to manually create a surface shape in order to represent concave - convex surface profile of the 3D model. Our method can automatically extract the concave - convex surface shape from the point cloud data.

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We propose a method of detecting keypoint on point cloud with center of gravity. The method detects convex shape area from moving direction and distance of center of gravity. In addition, the vertex is estimated from the moving direction. Our method can extract similar feature points for different scale shapes.

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Falling raindrops are added to related partition s of the mesh dividing the windshield. Accumulated water is moved to adjacent partitions by the diffusion function and external forces. The movement of the water pushed by the wiper is simulated by attaching the mesh in the rotating direction of the wiper blade.

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We developed an interactive Multi-View streaming system using MPEG-DASH. A proposed system can switch cameras very quickly and distribute video streams efficiently in the aspect of bandwidth. Moreover, since this system was implemented as a web application, it can run in various kinds of electronic devices.

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For interaction with virtual CG objects in the virtual studio system, vibration feedback method to vibrate device closely attached to actor in accordance with the distance between actor and virtual object is proposed. Experiments using virtual static and moving objects prove that proposed method is applicable.

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We developed a wireless transmission system that transports 4K camera image signal from the summit of Yarigatake to Matsumoto and we applied it to a 4K live broadcast event on “the day of the mountain”.

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Wireless program contribution systems for 8K production with sufficient image quality are much required. Accordingly, we have developed the SNG van for 8K satellite transmission, using an HEVC codec that can compress 8K/60p video data to more than 150M bits/s TS in real time.

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For transmission of digital broadcasting signals over FTTH networks, a high - speed baseband transmission method with time - division multiplexing (TDM) is discussed. We developed m ulti - c hannel d igital broadcasting t ransmission e quipment using 10 G - EPON technology and conducted the indoor transmission experiments for multiple MPEG - 2 TSs and MMT streams . Our prototype receiver successfull y restores original MPEG - 2 TSs /MMT stream distributed via a TDM system as a cable TV distribution system with frequency - division multiplexing (FDM) technology.

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We are studying 10Gbps baseband video signals transmission over existing FTTH networks. In this study, the WDM transmission method of the existing SCM (Sub Carrier Multiplexing) signal and the 10Gbps baseband video signal is discussed. We conducted indoor transmission experiments and got coexistence transmission conditions without any changes of existing SCM receiver premises.

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In the mobile reception of OFDM signal, reception characteristics decline by inter- carrier interference(ICI). In this paper, reception characteristics of ICI canceller using SVD as a new compensation scheme of ICI are evaluated. By computer simulations as the results, it is possible to improve reception characteristics by the proposed scheme.

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The improving scheme of reception characteristics in MU-MIMO is discussed. In the proposed scheme, the combining of lattice reduction and Gram Schmidt method is used to improve the reception characteristics. In the results of computer simulations, it is possible to improve the reception characteristics by the proposed scheme.

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We have developed an optical device with improved response characteristics as an optical filter for television cameras capable of step-free local adjustment. It incorporates two-layer lamination and uses a pulsed standby voltage, to reduce the response time to one-fourth that of existing elements.

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IP based live program production system has the potential to provide the new feature such as resource sharing. In this report, we introduce the resource sharing system for program production that extends AMWA IS-04 (Advanced Media Workflow Association Interface Specifications-04).

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The transcription of speech in video footage is indispensable to produce useful programs out of video footages collected for program production. We developed a transcription system using speech recognit ion technologies and a user interface for correcting recognition errors efficiently by mapping recognition results with video materials.

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We developed new closed captioning equipment for live broadcasting. The system uses techniques of speech recognition and workload balancing to generate text information and correct it by hand efficiently.

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T he MF Sky waves attenuat e in passing the iono s pheric D layer decided by the sunlight. We investigate d the MF broadcasting wave intensities on the annular solar eclipse in Ja pan. As a result, several sky waves were received . These wave s are compared with twilight data at sunset and sunrise.

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