Perceptually Enhanced Multimedia Data Acquisition, Processing, Transmission and Visualization

感知增强的多媒体数据采集、处理、传输和可视化

• 批准号: RGPIN-2015-04232
• 负责人: Cheng, Irene
• 金额: $ 1.31万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=589671
• 关键词: Perceptually; Enhanced; Multimedia; Data; Acquisition

Incorporating human perceptual criteria along the processing pipeline from data acquisition to visualization can deliver better visual experience to users. Despite the latest advances in high definition technology, the dynamic range supported by digital display devices is still insufficient to match the physical range of luminance in natural scenes as perceived by the Human Visual System. Photometric equipment can only capture a subset of this natural spectrum. Thus, the challenge lies in encoding a scene where light variation spans beyond this subset. This can be partly addressed by acquiring multiple images at different exposures, fused into one final High Dynamic Range (HDR) image, which then undergoes a mapping process and is output to Low Dynamic Range displays for human viewers.

在从数据采集到可视化的处理过程中，结合人类感知标准可以为用户提供更好的视觉体验。尽管高清晰度技术取得了最新进展，但数字显示设备支持的动态范围仍然不足以与人类视觉系统感知的自然场景中的物理亮度范围相匹配。光度测量设备只能捕捉到自然光谱的一个子集。因此，挑战在于编码一个场景，其中光线变化超出了这个子集。这可以通过在不同的曝光下获取多个图像，融合成一个最终的高动态范围（HDR）图像，然后经过映射过程，输出到人类观众的低动态范围显示器来部分解决。