基于示波仪器判读的绿幕拍摄素材现场检测工作模式实践研究

Practical on Field Detection Mode of Green Curtain Shooting Material Based on Video Scopes Instrument Interpretation

为解决传统影视拍摄过程中工作流程不合理,特效师无法从后期制作的角度对现场拍摄的特效素材进行有效检测的问题,本文提出原本在后期工作的特效师可提前在拍摄现场结合示波器参数,对所拍摄的特效素材做出有效检测的工作模式:在拍摄现场,采用检测仪器或带示波器功能的检测软件,通过矢量图检查蓝(绿)幕背景的色度和亮度等级、画面的色度分布情况,从而在现场对摄影师提出调整建议.在此基础上,建议从业人员在特效素材的影视拍摄过程中,建立起基于示波仪器判读的拍摄现场特效素材检测工作模式:即充分利用同在现场工作调色师的示波器所提供的图像信息,结合抠像工具的使用,在现场更准确高效地完成素材检查的工作模式.

In the process of traditional film and television shooting, because of the unreasonable work flow,the special effects teacher cannot effectively detect the special effects material at the post-production stage. To solve this problem, this paper puts forward a working mode in which the special effects teacher who originally worked in the later stage can combine the video scopes parameters with the video scopes parameters in advance to make an effective detection of the special effect material. In the shooting scene, they can adopt the detection software with the function of the detection instrument or video scopes. Some advices on shooting adjustment to the photographer at the scene are put forward. On this basis, it is suggested that employees, in the film and television shooting process of special effects materials, should establish the working mode of special effect material detection based on video scopes instrument interpretation. In addition, they should make full use of matting tools and the image information provided by the video scopes of the same toner working in the field, so as to complete the working mode of material inspection more accurately and efficiently.