不同帧率下电影动态镜头影像质量探究

Digital Film Dynanmic Shot Image Quality at Different Frame Rates

高帧率画面相较于普通帧率画面具有运动更顺滑、细节更丰富、亮度更高、画面更真实等优点。本文探索了帧率与电影动态镜头影像质量的关系,分析不同帧率下,一些因素的改变对于动态镜头的主观感知质量是否有影响,如何影响。包括横向运动物体运动速度、摄影机横摇速度、视觉中心的改变、前后景反差的改变、运动模糊等,并通过数据分析比对,得到规律性的结论,旨在推动高帧率电影的发展,为电影工作者所借鉴。

Compare to 24 FPS,high frame rate shots get smoother with motion,and more details,more brightness,more reality in images generally.This paper explores the relationship between frame rate and perceptual quality,that is,how different elements in dynamic pictures affect human’s subjective perception at different frame rates,including the velocity of a transverse moving object,camera roll speed,changes in the center of vision,changes in the contrast between the front and the back,and motion blur.Obtaining the regular conclusion through the data analysis comparison.It aims to promote the development of high frame rate films for filmmakers to learn from.