Conversion and Coding Practices for HDR/WCG ICTCP 4:2:0 Video

Lu, Taoran; Pu, Fangjun; Yin, Peng; Chen, Tao; Husak, Walt

doi:10.1109/dcc.2017.45

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Table 3 shows BD-rate performance of them compared with NCL Y'CbCr Anchor. The results indicate that the proposed method achieves a performance improvement in coding efficiency over [6]. Besides, [21] achieves better coding performance than the proposed method in terms of tPSNR-XYZ, tOSNR-XYZ, and PSNRL100, while the proposed method shows much better DE100 performance.…”

Section: B Objective Evaluationmentioning

confidence: 83%

“…For pixels that are close to neighbouring ones, the proposed method provides a very small change in weights so that it does not change the results significantly. Moreover, we compare the objective performance of the proposed method with those of [6] and [21]. As a basis for this work, [6] introduced the ICtCp color space and evaluated the compression performance of ICtCp relative to Y'CbCr.…”

Section: B Objective Evaluationmentioning

confidence: 99%

“…Moreover, we compare the objective performance of the proposed method with those of [6] and [21]. As a basis for this work, [6] introduced the ICtCp color space and evaluated the compression performance of ICtCp relative to Y'CbCr. [21] is one of our previous work that adopts irregularity concealment effect for HEVC encoder optimization to improve HDR video coding efficiency.…”

Section: B Objective Evaluationmentioning

confidence: 99%

“…ICtCp color space significantly improves color uniformity because it is based on the human visual system (HVS). Moreover, ICtCp color space is closer to the constant luminance criteria than Y'CbCr, which makes it friendly in color processing such as chroma subsampling [5], [6]. In 2016, MPEG released an ICtCp Anchor in the Common Test Conditions (CTC) [7], which used the ICtCp color space for HDR/WCG video coding.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Weighted Chroma Downsampling and Luma-Referenced Chroma Upsampling for HDR/WCG Video Coding

Jung

Yang

et al. 2019

IEEE Access

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High dynamic range (HDR) and wide color gamut (WCG) video coding adopt chroma downsampling and upsampling for coding efficiency, which causes degradation in visual quality. In this paper, we propose weighted chroma downsampling and luma-referenced chroma upsampling for HDR/WCG video coding. We adopt ICtCp color space for HDR/WCG video coding instead of Y'CbCr color space due to its advantage in the chroma data processing. We perform weighted chroma downsampling prior to encoding based on the difference between neighboring pixels. Moreover, we take advantage of the full resolution luma data to generate weights for chroma upsampling by exploring the correlation between luma and chroma data after decoding. The experimental results show that the proposed method reconstructs high quality HDR videos with better image details and less color distortion, and outperforms HDR Anchor in terms of both objective and subjective evaluations. INDEX TERMS Chroma downsampling, chroma upsampling, HDR/WCG video coding, ICtCp color space, weighted filter.

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Section: B Objective Evaluationmentioning

confidence: 83%