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Yasushi HASHIMOTO, Takao FUKUSHIMA, Tohru TSURUTA, Susumu ITOH, Toshio ...
Article type: Article
Pages
295-296
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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To encode any image at a designated rate by the previously proposed progressive coding scheme, bitrate assignment to each stage and distortion control method in small areas of each stage are described.
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Bunri OSAKI, Noboru YAMAGUCHI, Susumu ITOH, Toshio UTSUNOMIYA
Article type: Article
Pages
297-298
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Y, C_R and C_8 signals are individually segmented into DCT and DST blocks like a checkerboard. Interpolation error in DCT blocks and prediction error in DST blocks are encoded by DCT and DST respectively.
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F. LABRIKI, V. HAESE-COAT, J. RONSIN
Article type: Article
Pages
299-300
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper presents a new coding scheme working on the pyramidal decomposition of the image obtained after applying the new analysis tool called "wavelet transform" rather than on original image : It consists in calculating Discrete Cosine Transform 16x16 on results of the first level of this pyramid. Then, learning stage consists, from statistics on several images, in building classes of bit allocation matrices preserving orientations and energy distributions in DCT blocks. Finally coding amounts to select, for each transformed block, the best fitting matrix according to values of attributes extracted from the block.
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Toshiaki WATANABE, Kazuo OHZEKI
Article type: Article
Pages
301-302
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The rate-adaptive DCT coding logic is improved to get higher SNR, in which coding bits allocation is carried out more adaptively according to the image activity.
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Satoshi IMAI, Yasumi OSHIMA, Keijiro KUBOTA
Article type: Article
Pages
303-304
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper present concept and technical realization of an image coding scheme using residual DCT with interpolation. A bit rate of the reconstructed image at ITE Color Matching Chart is 0.530 [Bit/Pixel].
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Shin-ichi ARAZAKI, Masahito SAIGUSA, Sumihisa HASHIGUCHI, Makoto OHKI, ...
Article type: Article
Pages
305-306
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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8 bits/pel image data are transformed to DCT coffecients and coded by run-length coding into 1.2 bits/pel. Reproduced picture showed no visivle degradations.
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Ikuro UENO, Susumu ITOH, Toshio UTSUNOMIYA
Article type: Article
Pages
307-308
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Adaptivity is provided by selecting a neural network and quantizers based on both variance of prediction error signals in each subblock and the rate-distortion characteristic derived from the standard distribution of these signals.
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Tohru TSURUTA, Susumu ITOH, Toshio UTSUNOMIYA
Article type: Article
Pages
309-310
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Each pel is classified into one of four groups. In eash group run length of insignificant pels and prediction error signals of significant pels are adaptively encoded using variable length codes.
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Masahito SAIGUSA, Shin-ichi ARAZAKI, Sumihisa HASHIGUCHI, Makoto OHKI, ...
Article type: Article
Pages
311-312
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Coding characteristics of ADPCM is improved by varying the number of quantizing levels according to the signal dynamic range.
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Masahiro Wada, Yasuhiro Takishima
Article type: Article
Pages
313-314
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A packetizing method of coded video signals is proposed for ATM network. The method minimizes the damage of decoded pictures caused by cell loss by taking the structure of coded video data into account.
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Yasuhiro TAKISHIMA, Masahiro WADA
Article type: Article
Pages
315-316
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Several rate control methods for packet video coding are proposed and discussed. Simulation results show that average rate successfully converges to a target value with keeping constant SNR.
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Katsutoshi Manabe, Tomoaki Tanaka, Hiroshi Watanabe
Article type: Article
Pages
317-318
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Takeshi makiyama, Kazuhiro fukuzaki, Tsuneaki iwano
Article type: Article
Pages
319-320
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We developed data multiplexer/demultiplexer considering CCITT Recommendation H. 221 for a 64kbit/s channel in audiovisual teleservices. It is possible to provide for dynamically subdividing a transmission channel.
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Yasumi OSHIMA, Tadashi MOMMA, Keijiro KUBOTA
Article type: Article
Pages
321-322
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper present an image coding scheme using retinal model. This coding scheme obtain an effective primary image for human perceptivity and adapt to the progressive coding.
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Takashi KOMATSU, Takahiro SAITO, Hiroshi HARASHIMA
Article type: Article
Pages
323-324
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The authors, extending the concept of 1-dimensional noiseless universal coding to 2-dimensional irreversible coding, have developed a novel universal pattern-matching coding technique for compression of still images.
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Takahiro SAITO, Ryuji ABE, Takashi KOMATSU, Hiroshi HARASHIMA
Article type: Article
Pages
325-326
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We extend of the concept of coding via copying to video compression, thus developing a new pattern-matching interframe coding system, and demonstrate the superiority of the coding system by simulations.
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Kazuto Kamikura, Hiroshi Watanabe
Article type: Article
Pages
327-328
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Atsushi KOIKE, Masahide KANEKO, Yoshinori HATORI
Article type: Article
Pages
329-330
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper discusses an object-oriented motion analysis and its application to motion-compensated predictive coding. Experimental results demonstrate that hte proposed method gives the better performance in coding of moving facial images compared with the conventional coding method.
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Masahide KANEKO, Atsushi KOIKE, Yoshinori HATORI
Article type: Article
Pages
331-332
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper describes a new method to synthesize facial image sequence having expressions and mouth shapes synchronized with synthesized speech signal. Synthesis process can be fully and easily controlled by texts which described the speech, expression and motion.
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Leonardo ChiarIglione, Didier Le Gall, Hans-Georg Musmann, Hiroshi Yas ...
Article type: Article
Pages
333-334
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Hirohisa Jozawa, Hiroshi Watanabe
Article type: Article
Pages
335-336
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Hirokazu Nakashima, Takaya Morita, Akihiro Takahashi, Hiroo Inoue
Article type: Article
Pages
337-338
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Kenta Sokawa, Masaki Tokoi, Atsushi Ishizu, Kiyoshi Imai, Masaaki Fuji ...
Article type: Article
Pages
339-340
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We have developed a digital signal processing system for EDTV receivers. Newly developed precise motion detector and 2D-adaptive comb filter improve picture quality for both standard and non-standard signals.
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N. Yamaguchi, T. Kurashita, M. Ishizuka, J. Taniguchi, M. Yao
Article type: Article
Pages
341-342
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Consumer Electronics Development Laboratory, Mitsubishi Electric Corporation We describe a utility of a New Adaptive YC Separation Processing which consists of an adaptive field-comb filter added to the conventional motion adaptive YC separation.
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Yasuhiro HIRANO, Kazuo ISHIKURA
Article type: Article
Pages
343-344
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Movement detection for NTSC TV signals is described. In moving object, the absolute maximum value of 2 frame difference signals is adopted for the movement information. Experiment for YC separation process shows that the picture quality is improved.
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Masahiro KAGEYAMA, Hiroshi YOSHIGI
Article type: Article
Pages
345-346
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The authors propose new Y/C separation and scan-line doubling methods for telecine images. Deficiencies caused by motion-adaptive signal processing can be improved using these methods.
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Mikio Sasaki, Kazuo Kobo, Yoshikatsu Hattori, Hiroyasu shimbo
Article type: Article
Pages
347-348
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We have developed Ghost Reduction Tuner using GCR signal which is able to reduce the ghost in approximately 5 seconds by Zero Forcing algorithm.
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Noriaki KOMIYA
Article type: Article
Pages
349-350
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Akira Ishii, Hiroshi Matsue
Article type: Article
Pages
351-352
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We developed a new control IC for a ghost reducer. It has the signal processing function which speeds up tap gain convergence under the control of an 8-bit microprocessor.
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Makoto OHNISHI
Article type: Article
Pages
353-354
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Ringing compensation technique by synthesis of waveforms is proposed. Experimental results prove that the ringing between successive edges of signal, which had been difficult to be removed, is perfectly compensated.
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Takehiko Yasumi, Kazuo Mochizuki, Takashi Kogoshi
Article type: Article
Pages
355-356
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The newly developed video enhancer provides a better stereoscpic image and better depth perception by enhancing the intermediate and high elements of a video signal in the two dimensional frequency range.
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Toshiaki Tsuji, Kiyoshi Imai, Masaaki Fujita, Kenta Sokawa, Atsushi Is ...
Article type: Article
Pages
357-358
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We have developed the picture in picture system and some other additional functions for EDTV receivers by using some memories which are used in a EDTV signal processing in common.
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Hideki Honma, Toshimasa Yamazaki, Minoru Ashibe
Article type: Article
Pages
359-360
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Hideo Makita, Takaya Morita, Hiroo Inoue, Takashi Tachibana
Article type: Article
Pages
361-362
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Hiroshi Itoh, Reiko Suehiro, Miho Maeda, Takahiro Nakai
Article type: Article
Pages
363-364
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We propose a new technique of transmitting extra details for EDTV, where the details are sequentially scanned and transmitted in every other field.
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Masayuki Ishida, Yasuo Yoshizawa, Susumu Takayama
Article type: Article
Pages
365-366
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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NTV is developing NTSC compatible wide aspect EDTV system named MODE1. 5,which is positioned midway between the letterbox and sidepanel systems. This article describes the moving image computer simulation of MODE1. 5 system.
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A. Takahashi, T. Morita, H. Inoue, H. Nakashima, K. Kashigi, T. Tachib ...
Article type: Article
Pages
367-368
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This article describes a system which offers a wider aspect ratio by a technique taht is between SIDE PANEL and LETTERBOX, and higher spatial resolution by transmitting vertical high separately.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
Pages
369-370
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A wide screen EDTV has been examined by a system test. An improved EDTV system is, further, developed. It improves problems appeared by the test and accomplishes higher performances.
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Norihiro SUZUKI, Kazuo ISHIKURA, Masahiro KAGEYAMA, Takahiko FUKINUKI
Article type: Article
Pages
371-372
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The authors analyzed scanning-line conversion in the [vertical-temporal] frequency domain, Based on this analysis, they present an optimal system structure for letter-box wide-aspect TV.
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K. ISHIKURA, Y. HIRANO, N. SUZUKI, M. KAGEYAMA, H. YOSHIGI, T. FUKINUK ...
Article type: Article
Pages
373-374
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper describes experimental hardware of letter-box method wide aspect EDTV. In this system, static and dynamic resolutions are improved with a vertical-temporal augmentation signal transmitted in the top and bottom panels and a higher horizontal resolution component embedded on "Hole".
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H. Uwabata, S. Kageyama, S. Inoue, T.S. Bowser, Y. Yasumoto
Article type: Article
Pages
375-376
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Experiment proves waveform equalizer effective in wide-screen TV system using QAM. Two dimensional waveform equalizer reduced ghost and corsstalk to the quadrature channel by over 37dB and over 34dB, respectively.
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S. Kageyama, S. Inoue, H. Uwabata, Y. Yasumoto, S. Kido
Article type: Article
Pages
377-378
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Experiment proves complete compatibility of wide-screen QAM based TV system with CATV. 2-dimensional waveform equalizer compensates the transmission characteristics of the quadrature channel.
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M. Kouno, Y. Kobayashi, A. Sonehara, S. Saito
Article type: Article
Pages
379-380
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We developed new Teletext transmission controller, that is provided with a line for stock pricesdata, a line for packet switching network and a line for production terminal.
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Hiroshi SENO, Isamu MISONO
Article type: Article
Pages
381-382
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper describes a consideration of additional data for facsimile broadcasting system to assist the user in retrieving the facsimile program.
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KOJI SASANO
Article type: Article
Pages
383-384
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The device of composed of personal computer system & DAT. It can produce the FAX pictures based on the technical standard of FAX broadcasting system. It has a detecting function of ID numbers.
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Masayuki TAKADA, Toru KURODA, Osamu YAMADA
Article type: Article
Pages
385-386
Published: July 25, 1990
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This paper describes the difference of the effectiveness of error correction schemes for FM multiplex data broadcasting. The characteristics of error correction schemes are investigated using the error patern data collected in field tests.
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Sadahiro Satou, Ikuji Fujitani, Shoji Kawabata, Tomotsugu Watabe, Yosh ...
Article type: Article
Pages
387-388
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Bill Perlman
Article type: Article
Pages
389-390
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper discusses the basic principles of the Eidak copy protection system and solutions for the compatibility issues with the use of such a system in a cable television environment. These include picture stability, chroma phase correction and compatibility with existing cable scrambling systems.
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Article type: Appendix
Pages
391-
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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K. Balasubramanian
Article type: Article
Pages
393-394
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Realization of a 3-D TV system using the present day HDTV is proposed. This system is based on the stereoscopic principles transmitting the left and right eye view images of the object on multiplexed video lines. In the receiver, the video lines are demultiplexed, the missing lines are interpolated and the stereo pair of images are reconstructed in two picture tubes. By means of a bicircularily polarized viewing system, these stereo pair of images are made to offer a true 3-D vision. This system takes the advantage of high resolution offered by teh HDTV system and at the same time adds only a minimal complexity to the circuitry of the HDTV transmitter and the receiver for converting the HDTV into 3-D TV.
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