WO2008123254A1 - Image encoding method, device, image decoding method, and device - Google Patents

Image encoding method, device, image decoding method, and device Download PDF

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Publication number
WO2008123254A1
WO2008123254A1 PCT/JP2008/055588 JP2008055588W WO2008123254A1 WO 2008123254 A1 WO2008123254 A1 WO 2008123254A1 JP 2008055588 W JP2008055588 W JP 2008055588W WO 2008123254 A1 WO2008123254 A1 WO 2008123254A1
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WO
WIPO (PCT)
Prior art keywords
predicted
mode
image signal
information table
frequency information
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PCT/JP2008/055588
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French (fr)
Japanese (ja)
Inventor
Akiyuki Tanizawa
Taichiro Shiodera
Takeshi Chujoh
Original Assignee
Kabushiki Kaisha Toshiba
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Application filed by Kabushiki Kaisha Toshiba filed Critical Kabushiki Kaisha Toshiba
Publication of WO2008123254A1 publication Critical patent/WO2008123254A1/en

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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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/189—Methods 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
    • H04N19/19—Methods 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 using optimisation based on Lagrange multipliers
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • 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
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive 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
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

An image encoding method includes: a step of dividing a input image signal into a plurality of pixel blocks; a step of selecting a predicted mode of each pixel block from at least one predicted modes; a step of generating a predicted image signal of each pixel block from the reference image signal according to the selected predicted mode; a step of generating a prediction error signal by using the pixel block and the predicted image signal; a step of generating an quantized converted signal by subjecting the prediction error signal to an orthogonal conversion and quantization; a step of referencing a frequency information table containing mode information of each of one or more predicted modes; a step of obtaining the order information indicating the position of the mode information corresponding to the selected predicted mode in the frequency information table; a step of encoding the quantized converted signal and the order information; and a step of arranging the mode information corresponding to the selected predicted mode at the head of the frequency information table so as to rearrange the frequency information table.
PCT/JP2008/055588 2007-03-29 2008-03-25 Image encoding method, device, image decoding method, and device WO2008123254A1 (en)

Applications Claiming Priority (2)

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JP2007087202A JP2010135864A (en) 2007-03-29 2007-03-29 Image encoding method, device, image decoding method, and device
JP2007-087202 2007-03-29

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WO2008123254A1 true WO2008123254A1 (en) 2008-10-16

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JP (1) JP2010135864A (en)
TW (1) TW200850012A (en)
WO (1) WO2008123254A1 (en)

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CN112956199A (en) * 2018-11-06 2021-06-11 北京字节跳动网络技术有限公司 Simplified parameter derivation for intra prediction
US11438581B2 (en) 2019-03-24 2022-09-06 Beijing Bytedance Network Technology Co., Ltd. Conditions in parameter derivation for intra prediction
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US10390011B2 (en) 2010-04-09 2019-08-20 Mitsubishi Electric Corporation Moving image encoding device and moving image decoding device based on adaptive switching among transformation block sizes
US10554970B2 (en) 2010-04-09 2020-02-04 Mitsubishi Electric Corporation Moving image encoding device and moving image decoding device based on adaptive switching among transformation block sizes
US9973753B2 (en) 2010-04-09 2018-05-15 Mitsubishi Electric Corporation Moving image encoding device and moving image decoding device based on adaptive switching among transformation block sizes
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US10412385B2 (en) 2010-04-09 2019-09-10 Mitsubishi Electric Corporation Moving image encoding device and moving image decoding device based on adaptive switching among transformation block sizes
US10469839B2 (en) 2010-04-09 2019-11-05 Mitsubishi Electric Corporation Moving image encoding device and moving image decoding device based on adaptive switching among transformation block sizes
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JP2015516780A (en) * 2012-05-09 2015-06-11 マグナム セミコンダクター， インコーポレイテッド Apparatus and method for estimating the number of bits in a bitstream
US10021409B2 (en) 2012-05-09 2018-07-10 Integrated Device Technology, Inc. Apparatuses and methods for estimating bitstream bit counts
CN112956199A (en) * 2018-11-06 2021-06-11 北京字节跳动网络技术有限公司 Simplified parameter derivation for intra prediction
US11438598B2 (en) 2018-11-06 2022-09-06 Beijing Bytedance Network Technology Co., Ltd. Simplified parameter derivation for intra prediction
US11930185B2 (en) 2018-11-06 2024-03-12 Beijing Bytedance Network Technology Co., Ltd. Multi-parameters based intra prediction
US11902507B2 (en) 2018-12-01 2024-02-13 Beijing Bytedance Network Technology Co., Ltd Parameter derivation for intra prediction
US11595687B2 (en) 2018-12-07 2023-02-28 Beijing Bytedance Network Technology Co., Ltd. Context-based intra prediction
US11729405B2 (en) 2019-02-24 2023-08-15 Beijing Bytedance Network Technology Co., Ltd. Parameter derivation for intra prediction
US11438581B2 (en) 2019-03-24 2022-09-06 Beijing Bytedance Network Technology Co., Ltd. Conditions in parameter derivation for intra prediction
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JP2010135864A (en) 2010-06-17

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