IN2013CN00428A - - Google Patents

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IN2013CN00428A
IN2013CN00428A IN428CHN2013A IN2013CN00428A IN 2013CN00428 A IN2013CN00428 A IN 2013CN00428A IN 428CHN2013 A IN428CHN2013 A IN 428CHN2013A IN 2013CN00428 A IN2013CN00428 A IN 2013CN00428A
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India
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block
intra prediction
prediction mode
transform
select
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Inventor
Marta Karczewicz
Muhammed Zeyd Coban
Peisong Chen
Hsiao Chiang Chuang
Rajan Laxman Joshi
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Qualcomm Inc
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Publication of IN2013CN00428A publication Critical patent/IN2013CN00428A/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
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    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods 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
    • H04N19/157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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    • H04N19/102Methods 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
    • H04N19/103Selection of coding mode or of prediction mode
    • H04N19/11Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
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    • H04N19/102Methods 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
    • H04N19/12Selection 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
    • H04N19/122Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
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    • H04N19/129Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
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    • H04N19/136Incoming video signal characteristics or properties
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    • H04N19/17Methods 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
    • H04N19/176Methods 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
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    • H04N19/194Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive involving only two passes
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    • H04N19/90Methods 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
    • H04N19/96Tree coding, e.g. quad-tree coding
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Abstract

In a first example the apparatus is configured to select an intra prediction mode determine whether the block includes a sub block of a size for which multiple transforms are possible based on the size of the sub block and the selected intra prediction mode select one of the multiple possible transforms to transform the sub block and provide an indication of the selected transform. In a second example the apparatus is configured to determine that a block to be intra prediction encoded contains an edge within the block select an edge based intra prediction mode transform the residual block using a directional transform mapped from a directional intra prediction mode having an angle that approximates an angle of the edge and output information indicating that the block was predicted using a DC intra prediction mode.
IN428CHN2013 2010-07-09 2011-07-08 IN2013CN00428A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US36312710P 2010-07-09 2010-07-09
US37457310P 2010-08-17 2010-08-17
US37742010P 2010-08-26 2010-08-26
US13/178,427 US9172968B2 (en) 2010-07-09 2011-07-07 Video coding using directional transforms
US13/178,434 US9215470B2 (en) 2010-07-09 2011-07-07 Signaling selected directional transform for video coding
US13/178,438 US9661338B2 (en) 2010-07-09 2011-07-07 Coding syntax elements for adaptive scans of transform coefficients for video coding
PCT/US2011/043434 WO2012006574A2 (en) 2010-07-09 2011-07-08 Signaling selected directional transform for video coding

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IN2013CN00428A true IN2013CN00428A (en) 2015-07-03

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US (4) US9215470B2 (en)
EP (3) EP2591603B1 (en)
JP (4) JP2013534794A (en)
KR (4) KR101469394B1 (en)
CN (4) CN105721871B (en)
AR (1) AR082203A1 (en)
DK (1) DK2591600T3 (en)
HK (1) HK1220838A1 (en)
HU (1) HUE024172T2 (en)
IN (1) IN2013CN00428A (en)
PL (1) PL2591600T3 (en)
TW (1) TW201208386A (en)
WO (3) WO2012006576A2 (en)

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KR20130030301A (en) 2013-03-26
EP2591603A1 (en) 2013-05-15
CN105049852A (en) 2015-11-11
HUE024172T2 (en) 2016-02-29
HK1220838A1 (en) 2017-05-12
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WO2012006576A3 (en) 2012-03-15
EP2680585A3 (en) 2014-03-19
KR101618021B1 (en) 2016-05-03
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JP2015039191A (en) 2015-02-26
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PL2591600T3 (en) 2015-03-31
US20120008682A1 (en) 2012-01-12
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DK2591600T3 (en) 2015-01-12
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US9215470B2 (en) 2015-12-15
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CN105049852B (en) 2018-06-01
JP2013531445A (en) 2013-08-01
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EP2591603B1 (en) 2016-05-11
US9172968B2 (en) 2015-10-27
US10390044B2 (en) 2019-08-20
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