MX2013012395A - Aparatos y metodos para codificacion y decodificacion de imagen de intervalo dinamico alto (hdr). - Google Patents

Aparatos y metodos para codificacion y decodificacion de imagen de intervalo dinamico alto (hdr).

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Publication number
MX2013012395A
MX2013012395A MX2013012395A MX2013012395A MX2013012395A MX 2013012395 A MX2013012395 A MX 2013012395A MX 2013012395 A MX2013012395 A MX 2013012395A MX 2013012395 A MX2013012395 A MX 2013012395A MX 2013012395 A MX2013012395 A MX 2013012395A
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MX
Mexico
Prior art keywords
luminances
range
hdr
image
dynamic range
Prior art date
Application number
MX2013012395A
Other languages
English (en)
Inventor
Mark Jozef Willem Mertens
Original Assignee
Koninkl Philips Nv
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Filing date
Publication date
Application filed by Koninkl Philips Nv filed Critical Koninkl Philips Nv
Publication of MX2013012395A publication Critical patent/MX2013012395A/es

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    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • 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
    • H04N19/98—Adaptive-dynamic-range coding [ADRC]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/007—Transform coding, e.g. discrete cosine transform
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20172—Image enhancement details
    • G06T2207/20208—High dynamic range [HDR] image processing

Abstract

Para hacer disponible una imagen HDR que codifica mecanismo con utilidad fuertemente mejorada, se describe una unidad de codificación de imagen (301) configurada para codificar una imagen de intervalo dinámico alto (IM_HDR-in) que comprende: - un selector LDR (311) para identificar un intervalo dinámico bajo de luminancias (R_Norml_LDR) o intervalo correspondiente de valores de código de luma (R_LDR) dentro del intervalo total de luminancias (Range_HDR) cubierto por la imagen de intervalo dinámico alto; - un selector HDR para seleccionar al menos un intervalo complementario (R_above) dentro del intervalo total de luminancias (Range_HDR), que comprende principalmente luminancias no cubiertas por el intervalo dinámico bajo de luminancias (R_Norml_LDR); - una unidad de mapeo de código (315) configurado para codificar en una primera imagen (Im_1*), que tiene un componente luma que comprende N palabras de código bit, luminancias de píxel de la imagen de intervalo dinámico alto (IM_HDR-in) que caen dentro del intervalo dinámico bajo de luminancias (R_Norml_LDR) para codificar valores (Y_out) de acuerdo a un primer mapeo (CMAP_L), y luminancias de píxel de la imagen de intervalo dinámico alto (IM_HDR-in) que caen dentro de al menos un intervalo complementario (R_above) para codificar valores (Y_out) de acuerdo a un segundo mapeo (CMAP_H), en donde el primero y segundo mapeos mapean a subintervalos disjuntos del intervalo de valores de código de luma de la primera imagen (RcTot_lm1).
MX2013012395A 2011-04-28 2012-04-23 Aparatos y metodos para codificacion y decodificacion de imagen de intervalo dinamico alto (hdr). MX2013012395A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11164005 2011-04-28
US201261591339P 2012-01-27 2012-01-27
PCT/IB2012/052029 WO2012147022A2 (en) 2011-04-28 2012-04-23 Apparatuses and methods for hdr image encoding and decoding

Publications (1)

Publication Number Publication Date
MX2013012395A true MX2013012395A (es) 2013-11-04

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MX2013012395A MX2013012395A (es) 2011-04-28 2012-04-23 Aparatos y metodos para codificacion y decodificacion de imagen de intervalo dinamico alto (hdr).

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US (2) US9451274B2 (es)
EP (2) EP2702766B1 (es)
JP (2) JP6009538B2 (es)
CN (2) CN103891294B (es)
BR (1) BR112013027245B1 (es)
DK (1) DK2702767T3 (es)
MX (1) MX2013012395A (es)
PL (1) PL2702767T3 (es)
RU (2) RU2616158C2 (es)
WO (2) WO2012147018A2 (es)

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