Scientific and Technical Journal

ELECTROTECHNIC AND COMPUTER SYSTEMS

ISSN Print 2221-3937
ISSN Online 2221-3805
WAY OF VIDEO CONTENT QUALITY IMPROVEMENT ON CRITERIA OF RESULTING IMAGE QUALITY
Abstract:
A method is proposed to improve the video content quality using the criteria of the resulting image quality as measured by objective indexes. The method is based on the application in the process of TV programs production of video content quality control and managementsystem, whichuses videotranscoder that changes the bit rate of the video stream in accordance with the quality measurement of the transmitted video.
Proposed to use close loop videotranscoder consisting of a decoder, encoder and the objective quality analysis and bit rate control unit. As an objective quality measure the metrics MSSSIM (Multi-Scale Structure Similarity Index Measure)is applied, which is most consistent with the human subjective perception as it takes into account the changes in the brightness and contrast of the image.
In videotranscoder,proposed to classify video pictures on their content based on the measured objective qualityindexes. Nine classes of video sequences added, which assigned to the corresponding control function obtained by fitting the experimental quality assessments of test video sequences using a logarithmic function.
The expression obtained to determine quantization factor to change the bit rate of the video sequence that leads to a change in the quality of the transmitted video.
Authors:
Keywords
DOI
10.15276/etks.17.93.2015.11
References
  1. Veryga A.D., Lesins'kyj V.V., Samila A.P., Galjuk S.D., and Krulikovs'kyj O.V. Fizyko-tehnologichni problemy radiotehnichnyh prystroi'v, zasobiv telekomunikacij, nano- ta mikroelektroniky: Materialy IV-oi' mizhnarodnoi' naukovo-praktychnoi' konferencii' [Physical and Technological Problems of Radio Engineering Devices, Telecom-munications, Nano- and Microelectronics],(2014), Materials of IV-th International Scientific Conference, Misto Publ., Chernivci, Ukraine, 211 p. (In Ukrainian).
  2. Rec. ITU-R BT.601-7, (2011), Studio Encoding Parameters of Digital Television for Standard 4:3 and Wide-screen 16:9 Aspect Ratios, [Electronic resource], available at: http://www.itu.int/dms_pubrec/itu-r/rec/bt/R- REC-BT.601-7-201103-I!!PDF -.pdf (accessed: March, 2011).
  3. Richardson Ya. Videokodirovanie. H.264 i MPEG-4 – standarty novogo pokoleniya [Video Coding. H.264 and MPEG-4 – new Generation Standards], (2005), Tekhnosfera Publ., Moscow, Russian Federation, 386 p. (In Russian).
  4. Li Z., Gao W., et al., (2003), Adaptive Rate Control with HRD Consideration, ISO/IEC-JTC1/SC29/WGU and ITU-T SGI6. Q.6 Document JVT-H014, May 2003 (In English).
  5. Saw Y.-S., (1998), Rate-Quality Optimized Video Coding. Kluwer Academic Publishers, November 1998 (In English).
  6. Wang Z., Bovik A., Sheikh H.R., and Simoncelli P., (2004), Image Quality Assessment: From Error Visibility to Structural Similarity, IEEE Transactions on Image Processing, Vol. 13, No. 4, April 2004 (In English).
  7. Wang Z., Simoncelli P., and Bovik A., (2003), Multi-Scale Structural Similarity for Image Quality Assessment, Proceedings of the 37th IEEE Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, Nov. 9 – 12, 2003 (In English).
  8. Popovich P.V. O podhode k upravleniju skorost'ju transportnogo potoka po kriteriju kachestva video-izobrazhenij [About Approach to Transport Stream Bitrates Control by Video Picture Quality Criteria], (2011), Jelektrotehnicheskie i Komp'juternye Sistemy Publ., Kiev, Ukraine, Vol. 4, pp. 185 – 189 (In Russian).
  9. Gonsales R., and Vuds R. Tsifrovaya obrabotka izobrazhenii [Digital Image Processing], (2005), Tekhnosfera Publ., Moscow, Russian Federation, 1072 p. (In Russian).
  10. Abakumov V.G., Adam T., Formanek B., Kane A., and Popovych P.V., (2010), Rate Control in Open-Loop Video Transcoder, Kiev, Ukraine, Elektronika i Svyaz' Publ., Vol. 6, Iss.2, pp. 172 – 177 (In English).
Published:
Last download:
2017-11-17 06:21:51

[ © KarelWintersky ] [ All articles ] [ All authors ]
[ © Odessa National Polytechnic University, 2014. Any use of information from the site is possible only under the condition that the source link! ]
Яндекс.Метрика