GY/T 329-2020 in English
VALIDTest materials to be used in subjective assessment for 4K ultra high definition video picture quality
- Issued on:2020-09-04
- Implemented on:2020-09-04
- File Format:PDF
- Delivery:Via email within 5 business days
Price(USD)：
$630.00
$612.00
$612.00
本标准规定了信号格式符合GY/T 307—2017或GY/T 315—2018、图像扫描格式采用3840×2160/50/P
的4K超高清视频图像质量主观评价用的测试图像。
本标准适用于4K超高清视频系统和设备的图像质量主观评价，也可用于图像质量的客观测试。
Introduction
Analysis of the core content of the standard
| Technical dimensions | Parameter requirements | Test significance |
|---|---|---|
| Image format | 3840×2160/50P RGB 4:4:4/16bit | Ensure 4K ultra-high-definition basic image quality |
| Dynamic range | PQ/HLG(1000cd/m²) | HDR effect verification benchmark |
| Test scenarios | 65 professional sequences | Fully covers the needs of film and television production |
Classification of key test images
1. Color reproduction test group
Including 15 groups of scenes such as Flower close-up and Flowers in full bloom, mainly verifying:
- BT.2020 color gamut coverage capability
- High saturation color reproduction accuracy
- Chroma consistency under different lighting conditions
2. Dynamic performance test group
Such as Dragon Boat Race, Football Match and other sports scenes, focusing on the following detections:
- Effectiveness of motion prediction algorithm
- Block effect suppression under fast motion
- Smoothness of complex scene switching
Equipment technical requirements
| Equipment type | Key parameters | Standard compliance |
|---|---|---|
| SONY PMW-F55 | Super 35mm CMOS ISO 320-5000 | Meet 90% of test scenarios |
| DaVinci Color Grading System | 16-bit RGB processing | Ensure HDR metadata integrity |
Implementation and application suggestions
- Equipment selection: Prioritize 4K HDR devices that support PQ/HLG hyperbola
- Test combination: Select 3-5 typical scenes (such as studio + sports + night scene) according to actual applications
- Result analysis: Determine system bottlenecks in combination with the severity data in Appendix C
Technology evolution analysis
Main breakthroughs of this standard compared to GY/T 307-2017:
- Added 22 groups of HDR-specific test scenes
- Introduced peak brightness test under PQ curve
- Added quantitative evaluation indicators for motion scenes
Sample only — not a preview of GY/T 329-2020
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