GR20120100630A - Method of controlling data flow rate in a video compression system under the jpeg standard - Google Patents

Method of controlling data flow rate in a video compression system under the jpeg standard

Info

Publication number
GR20120100630A
GR20120100630A GR20120100630A GR20120100630A GR20120100630A GR 20120100630 A GR20120100630 A GR 20120100630A GR 20120100630 A GR20120100630 A GR 20120100630A GR 20120100630 A GR20120100630 A GR 20120100630A GR 20120100630 A GR20120100630 A GR 20120100630A
Authority
GR
Greece
Prior art keywords
video compression
flow rate
compression
jpeg
data flow
Prior art date
Application number
GR20120100630A
Other languages
Greek (el)
Inventor
Γεωργιος Αναγνωστοπουλος
Κωνσταντινος Πραματαρης
Original Assignee
Αλμα Τεχνολογιες Α.Ε.,
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Αλμα Τεχνολογιες Α.Ε., filed Critical Αλμα Τεχνολογιες Α.Ε.,
Priority to GR20120100630A priority Critical patent/GR20120100630A/en
Publication of GR20120100630A publication Critical patent/GR20120100630A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/423—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/15—Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field

Abstract

The present method constitutes a method for the control of the flow of compressed data derived from the compression of a video sequence according to the JPEG standard. The method is based on the dynamic variation of the extent of compression of each frame, in order to ensure a predetermined and constant compressed-data flow rate. The method employs a proportional-integral-derivative controller (PID-C) in order to control, at the frame level, the quality factor (qf) of a JPEG encoder (JPEG-E), and thus the volume of the produced data. This method also employs a storage space (BUF) which accumulates the compressed data, which are then released at a constant rate. The degree of fullness of the said storage space is employed in the calculation of the integral step of the PID controller (PID-C). The method may be used in systems for real-time video compression and transmission as well as in video compression and storage systems.
GR20120100630A 2012-12-17 2012-12-17 Method of controlling data flow rate in a video compression system under the jpeg standard GR20120100630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GR20120100630A GR20120100630A (en) 2012-12-17 2012-12-17 Method of controlling data flow rate in a video compression system under the jpeg standard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR20120100630A GR20120100630A (en) 2012-12-17 2012-12-17 Method of controlling data flow rate in a video compression system under the jpeg standard

Publications (1)

Publication Number Publication Date
GR20120100630A true GR20120100630A (en) 2014-07-18

Family

ID=48539294

Family Applications (1)

Application Number Title Priority Date Filing Date
GR20120100630A GR20120100630A (en) 2012-12-17 2012-12-17 Method of controlling data flow rate in a video compression system under the jpeg standard

Country Status (1)

Country Link
GR (1) GR20120100630A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070206674A1 (en) * 2006-03-01 2007-09-06 Streaming Networks (Pvt.) Ltd. Method and system for providing low cost robust operational control of video encoders
US20120002721A1 (en) * 2010-07-01 2012-01-05 Gheorghe Berbecel Method and system for multi-layer rate control for a multi-codec system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070206674A1 (en) * 2006-03-01 2007-09-06 Streaming Networks (Pvt.) Ltd. Method and system for providing low cost robust operational control of video encoders
US20120002721A1 (en) * 2010-07-01 2012-01-05 Gheorghe Berbecel Method and system for multi-layer rate control for a multi-codec system

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
CHI-WAH WONG ET AL: "PID-based real-time rate control", 2004 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO : JUNE 27 - 30, 2004, TAIPEI, TAIWAN, IEEE OPERATIONS CENTER, PISCATAWAY, NJ, vol. 1, 27 June 2004 (2004-06-27), pages 221 - 224, XP010770784, ISBN: 978-0-7803-8603-7, DOI: 10.1109/ICME.2004.1394165 *
KORNBLUM ET AL: "Using JPEG quantization tables to identify imagery processed by software", DIGITAL INVESTIGATION, ELSEVIER, AMSTERDAM, NL, vol. 5, 1 September 2008 (2008-09-01), pages S21 - S25, XP023783324, ISSN: 1742-2876, [retrieved on 20080526], DOI: 10.1016/J.DIIN.2008.05.004 *
MUHAMMAD SHAFIQUE ET AL: "Non-linear rate control for H.264/AVC video encoder with multiple picture types using image-statistics and motion-based Macroblock Prioritization", IMAGE PROCESSING (ICIP), 2009 16TH IEEE INTERNATIONAL CONFERENCE ON, IEEE, PISCATAWAY, NJ, USA, 7 November 2009 (2009-11-07), pages 3429 - 3432, XP031628517, ISBN: 978-1-4244-5653-6 *
SUN Y ET AL: "Incremental rate control for H.264/AVC video compression", IET IMAGE PROCESSING,, vol. 3, no. 5, 12 October 2009 (2009-10-12), pages 286 - 298, XP006033932, ISSN: 1751-9667, DOI: 10.1049/IET-IPR:20090037 *

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