Overview of Color Gamut Scalability

Bordes, Philippe; Andrivon, Pierre; Li, Xiang; Ye, Yan; He, Ying

doi:10.1109/tcsvt.2016.2539538

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…The SHVC extension [2] enables several types of scalability not supported by SVC such as color-gamut and bit depth. These two scalability enable to switch from Standard Dynamic Range (SDR) to High Dynamic Range (HDR) formats within one bitstream [14]. SHVC defines high level syntax elements mostly at the level of Video Parameter Set (VPS) header.…”

Section: Related Work a Shvc Extensionmentioning

confidence: 99%

4K Real Time Software Solution of Scalable HEVC for Broadcast Video Application

Parois¹,

Hamidouche

Cabarat

et al. 2019

IEEE Access

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Scalable high-efficiency video coding (SHVC) is the scalable extension of the high-efficiency video coding (HEVC) standard. SHVC enables spatial, quality, bit-depth, color gamut, and codec scalability. The architecture of the SHVC encoder is based on multiple instances of the HEVC encoder where each instance encodes one video layer. This architecture offers several advantages of being modular and close to the native HEVC coding block scheme. However, the close-loop SHVC architecture requires the complete decoding of the reference lower layer frames to decode a higher quality layer, which considerably increases the complexity of both encoder and decoder processes. In this paper, we propose an end-to-end 4K real-time SHVC solution, including both software encoder and decoder, for video broadcast applications. The SHVC codec relies on low-level optimizations for specific Intel x86 platform and parallel processing to speed up the encoding and decoding processes. The proposed encoder enables real-time processing of 4Kp30 video in 2× spatial scalabilities on the 4 × 10 cores Intel Xeon processor (E5-4627V3) running at 2.6 GHz. In addition, the SHVC decoder enables to decode, respectively, the lower quality layer in full HD (1920 × 1080p30) resolution, an advanced RISC machine (ARM) Neon mobile platform, and the enhancement layer in UHD (3840 × 2160p30), on a fitted laptop, with 4 cores Intel i7 processor running at 2.7 GHz. Finally, experimental results have shown that the proposed solution can reach a high rate-distortion performance close to the reference SHVC reference software model (SHM) with a speedup of 37 and 66 in intra and inter coding configurations.INDEX TERMS Scalable video coding, HEVC, SHVC extension, real time video codecs.

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Section: Related Work a Shvc Extensionmentioning

confidence: 99%

4K Real Time Software Solution of Scalable HEVC for Broadcast Video Application

Parois¹,

Hamidouche

Cabarat

et al. 2019

IEEE Access

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“…At the same time, the old standards (e.g., NTSC, EBU) are no longer suitable for laserbased displays. The color rendition quality is not satisfactory if we continuous to use the NTSC signal in a laser-based display directly [9]- [11]. Some works have been done for achieving high color quality by complex data processing method, which will result in long processing time and complex circuit [12]- [20].…”

Section: Introductionmentioning

confidence: 99%

A Novel Laser-Based Display and Imaging Combined System

Wang

Cui

et al. 2018

IEEE Photonics J.

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Laser-based displays can offer a wide color gamut to the viewers due to the narrow bandwidth of laser source, which is quite different from traditional display systems. Therefore, the color rendition standards for traditional displays are no longer suitable for laser-based displays. An optimized and practical color reproduction system is proposed and demonstrated for laser-based displays in this paper. Not only the three primary wavelengths are well chosen by considering the luminance efficiency, color gamut, and color matching function, but also the response function of a camera system is optimized for a simplified color reproduction procedure. A remarkably high color rendition quality is presented in our experiment compared with traditional displays.

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“…Compared with traditional tricolor, the added primary colors have higher saturation, which can extend the color gamut and create better spot color. 1 Meanwhile, the use of multiple primary colors makes the spot color difficult to reproduce. In order to obtain an accurate recipe for the spot color, an effective method for color prediction should be developed.…”

mentioning

confidence: 99%

An enhanced quantum-inspired gravitational search algorithm for color prediction based on the absorption spectrum

Gao

Zhang

Zhou

et al. 2020

Textile Research Journal

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Spot color is widely applied to printing and packing in modern industry, which can satisfy the individualization requirements and express the emotion of products. Color prediction is the core technique for spot color restoration. In this paper, a method that combines the least squares method and gravitation search algorithm is proposed to address the color prediction by using the absorption spectrum. Firstly, the spectral transmittance of the thin film with high transmission and low reflectance characteristics is researched to find the absorbance. Secondly, the least squares method is used to ascertain the primary colors of the spot color. Thirdly, an enhanced quantum gravitation search algorithm is designed to predict the spot color. The predicted results on the 30 spot colors show that the proposed method has higher accuracy in comparison with the three existed methods. The color differences between the prepared spot colors and the reproduced spot colors are all less than 3, in which 75% of the color differences are less 1 and 35% of the color differences are less 0.1. All the results confirm that the proposed method can predict the spot color accurately.

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Overview of Color Gamut Scalability

Cited by 6 publications

References 4 publications

4K Real Time Software Solution of Scalable HEVC for Broadcast Video Application

4K Real Time Software Solution of Scalable HEVC for Broadcast Video Application

A Novel Laser-Based Display and Imaging Combined System

An enhanced quantum-inspired gravitational search algorithm for color prediction based on the absorption spectrum

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