现场捕捉相机——对图像质量的新挑战

Veli-Tapani Peltoketo
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引用次数: 2

摘要

商业现场捕捉相机即将进入市场,一个视觉娱乐的新时代开始成型。由于真正的现场捕捉仍然是一项非常新的技术,真正的技术解决方案只是经过了原型设计阶段,而且差异很大。现场捕捉相机仍然有与数字成像之前阶段相同的质量问题需要解决,但也有许多新的问题需要解决。这项工作集中于现场捕捉相机的质量挑战。一个可以记录3D视听现实的摄像系统必须有几个摄像模块,几个麦克风,特别是可以同步输出多个源的技术,以实现无缝平滑的虚拟现实体验。在现场捕捉相机中,一些传统的质量特征仍然有效。色彩保真度、去噪、分辨率和动态范围等功能为虚拟现实流质量奠定了基础。然而,多台摄像机的合作为这些质量因素带来了新的维度。此外,还可以验证新的质量特性。例如,如何将镜头流与3D体验拼接在一起而不会出现明显的错误,如何验证拼接?该工作描述了在存在捕获相机时仍然有效的质量因素,并定义了这些因素的重要性。此外,从图像和视频质量的角度探讨了存在捕捉摄像机面临的新挑战。这项工作包括考虑当前的测量方法如何很好地用于现场捕捉相机。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Presence capture cameras - a new challenge to the image quality
Commercial presence capture cameras are coming to the markets and a new era of visual entertainment starts to get its shape. Since the true presence capturing is still a very new technology, the real technical solutions are just passed a prototyping phase and they vary a lot. Presence capture cameras have still the same quality issues to tackle as previous phases of digital imaging but also numerous new ones. This work concentrates to the quality challenges of presence capture cameras. A camera system which can record 3D audio-visual reality as it is has to have several camera modules, several microphones and especially technology which can synchronize output of several sources to a seamless and smooth virtual reality experience. Several traditional quality features are still valid in presence capture cameras. Features like color fidelity, noise removal, resolution and dynamic range create the base of virtual reality stream quality. However, co-operation of several cameras brings a new dimension for these quality factors. Also new quality features can be validated. For example, how the camera streams should be stitched together with 3D experience without noticeable errors and how to validate the stitching? The work describes quality factors which are still valid in the presence capture cameras and defines the importance of those. Moreover, new challenges of presence capture cameras are investigated in image and video quality point of view. The work contains considerations how well current measurement methods can be used in presence capture cameras.
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