Assessment of image quality in high resolution display systems

该Engage提案描述了高通公司与约克大学之间的一项新合作。高通公司是设计和销售无线通信设备的全球领先电信公司，也是制定行业标准的领导者。显示技术的快速发展正在驱动用于各种平台（移动的设备、电视）的具有越来越高的分辨率的设备的创建。虽然消费者习惯于高清（HD）显示器，但四倍于此分辨率（4K，UHD）的显示器正在成为一种可行的消费者选择。该行业成功的关键决定因素之一将是显示内容的感知质量。为了获得4K（和更高）分辨率，必须压缩越来越多的数据以减少带宽。显示流的结果 压缩是通过引入像素化噪声和其它图像伪像来降低图像质量。为了科普这种数据大小/保真度的权衡及其对市场的潜在影响，业界必须制定低影响（视觉无损）压缩算法的标准。此外，为了使这些标准有意义，关键是要通过精心控制和设计的用户研究来制定这些标准，并提供适当的内容和测试参数。 为了建立和验证严格的测试协议，高通公司需要人类视觉评估和心理物理方法学方面的专家提供意见。拟议与约克大学建立的伙伴关系将提供这方面的专业知识，并为建立一个标准协议铺平道路，以评估压缩算法是否能够在不牺牲图像质量的情况下科普数据速率的增加。约克将审查目前的方法来显示流压缩（DSC）的评估，使用目前的标准和天真的观察者。鉴于电信业对加拿大经济的重要性，该项目的潜在影响是巨大的。

This Engage proposal describes a new collaboration between Qualcomm Corporation and York University. Qualcomm is a global leader in telecommunication that designs and markets wireless telecommunication devices, and a leader in the establishment of industry standards. Rapid advances in display technology are driving the creation of devices with increasingly high resolution, for a variety of platforms (mobile devices, televisions). While consumers are accustomed to high definition (HD) displays, displays with four times this resolution (4K, UHD) are becoming a viable consumer option. One of the critical determinants of the success of this industry will be the perceived quality of display content. To attain 4K (and higher) resolution, increasingly large amounts of data has to be compressed to reduce bandwidth. A consequence of display stream compression is reduction of picture quality with introduction of pixelated noise and other image artefacts. To cope with this data-size/fidelity trade-off, and its potential impact on the market, the industry must develop standards for low-impact (visually lossless) compression algorithms. Moreover, to make such standards meaningful, it is critical that they be developed via carefully controlled and designed user studies with suitable content, and test parameters. To establish and validate rigorous test protocols Qualcomm requires input from experts in human visual assessment and psychophysical methodologies. The proposed partnership with York University will provide access to this expertise and pave the way towards establishing a standard protocol to evaluate whether or which compression algorithms are able to cope with the increases in data rate, without sacrificing image quality. York will review current approaches to display stream compression (DSC) evaluation, using current standards and naïve observers. The potential impact of this project is significant given the importance of the telecommunications industry to the Canadian economy.