HK1053565A1 - Variance based adaptive block size dct image compression. - Google Patents

Variance based adaptive block size dct image compression.

Info

Publication number
HK1053565A1
HK1053565A1 HK03105794A HK03105794A HK1053565A1 HK 1053565 A1 HK1053565 A1 HK 1053565A1 HK 03105794 A HK03105794 A HK 03105794A HK 03105794 A HK03105794 A HK 03105794A HK 1053565 A1 HK1053565 A1 HK 1053565A1
Authority
HK
Hong Kong
Prior art keywords
block size
image compression
based adaptive
adaptive block
variance based
Prior art date
Application number
HK03105794A
Other languages
English (en)
Inventor
Kadayam Thyagarajan
Michael J Merritt
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of HK1053565A1 publication Critical patent/HK1053565A1/xx

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
    • H04N19/10—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
    • H04N19/176—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 block, e.g. a macroblock
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/96—Tree coding, e.g. quad-tree coding
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
HK03105794A 1999-11-08 2003-08-13 Variance based adaptive block size dct image compression. HK1053565A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/436,085 US6529634B1 (en) 1999-11-08 1999-11-08 Contrast sensitive variance based adaptive block size DCT image compression
PCT/US2000/030883 WO2001035673A1 (en) 1999-11-08 2000-11-08 Variance based adaptive block size dct image compression

Publications (1)

Publication Number Publication Date
HK1053565A1 true HK1053565A1 (en) 2003-10-24

Family

ID=23731055

Family Applications (1)

Application Number Title Priority Date Filing Date
HK03105794A HK1053565A1 (en) 1999-11-08 2003-08-13 Variance based adaptive block size dct image compression.

Country Status (18)

Country Link
US (1) US6529634B1 (pt)
EP (1) EP1230804B1 (pt)
JP (2) JP5289659B2 (pt)
KR (1) KR100740818B1 (pt)
CN (1) CN1186942C (pt)
AR (1) AR033655A1 (pt)
AT (1) ATE538598T1 (pt)
AU (1) AU782176B2 (pt)
BR (1) BR0015341B1 (pt)
CA (1) CA2389410C (pt)
ES (1) ES2376540T3 (pt)
HK (1) HK1053565A1 (pt)
IL (2) IL149455A0 (pt)
MX (1) MXPA02004577A (pt)
RU (1) RU2273112C2 (pt)
TW (1) TW517500B (pt)
WO (1) WO2001035673A1 (pt)
ZA (1) ZA200203276B (pt)

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Also Published As

Publication number Publication date
BR0015341A (pt) 2003-07-15
TW517500B (en) 2003-01-11
WO2001035673A1 (en) 2001-05-17
JP5384696B2 (ja) 2014-01-08
MXPA02004577A (es) 2002-11-29
EP1230804A1 (en) 2002-08-14
AR033655A1 (es) 2004-01-07
CA2389410A1 (en) 2001-05-17
IL149455A0 (en) 2002-11-10
AU1481101A (en) 2001-06-06
ZA200203276B (en) 2003-07-24
CN1421102A (zh) 2003-05-28
BR0015341B1 (pt) 2015-01-06
JP2012199963A (ja) 2012-10-18
ATE538598T1 (de) 2012-01-15
ES2376540T3 (es) 2012-03-14
AU782176B2 (en) 2005-07-07
CN1186942C (zh) 2005-01-26
IL149455A (en) 2007-07-04
KR20030036129A (ko) 2003-05-09
EP1230804B1 (en) 2011-12-21
CA2389410C (en) 2011-06-28
RU2273112C2 (ru) 2006-03-27
JP5289659B2 (ja) 2013-09-11
JP2003523652A (ja) 2003-08-05
US6529634B1 (en) 2003-03-04
KR100740818B1 (ko) 2007-07-19

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Effective date: 20111108