公开(公告)号：US20070247629A1

公开(公告)日：2007-10-25

申请号：US11407216

申请日：2006-04-20

申请人： Byung Kim ,  Mark Rood ,  Ke Du

发明人： Byung Kim ,  Mark Rood ,  Ke Du

IPC分类号： G01N21/00

CPC分类号： G01N21/59 ,  G01N21/278 ,  G01N2021/1772 ,  G01N2021/1793 ,  G01N2021/5957

摘要： Photography is employed to objectively quantify opacity of fluids such as smoke plumes and dust via a method termed the Digital Optical Method (DOM™). The DOM™ quantifies the ratio of radiance values by means of a camera response curve obtained using objective measures. The radiance ratios are then used to calculate opacity of target fluids such as smoke plumes. The DOM™ quantifies opacity during both daytime and nighttime conditions with a much broader range of subject types, e.g., white, gray and black smoke plumes, and environmental conditions, e.g., non-blue-sky, building, and mountain backgrounds, than existing systems while not requiring human interpretation for any application. In one embodiment, the DOM™ quantifies opacity from digital photos using a pre-designed algorithm and an inexpensive digital camera. Very little training is needed to implement the DOM™ and it yields consistent objective quantitative results, while providing a permanent photographic record easily digitally archived.

摘要翻译： 摄影用于通过称为数字光学方法（DOM）的方法客观地量化诸如烟雾和灰尘的流体的不透明度。 DOM TM通过使用客观测量获得的相机响应曲线来量化辐射值的比率。 然后使用辐射比来计算目标流体（如烟羽）的不透明度。 DOM（TM）在白天和夜间条件下量化不透明度，具有更广泛的主题类型，例如白色，灰色和黑色烟雾羽毛以及环境条件，例如非蓝天，建筑和山脉背景， 比现有系统，而不需要任何应用程序的人为解释。 在一个实施例中，DOM TM使用预先设计的算法和便宜的数码相机来量化来自数字照片的不透明度。 实施DOM（TM）需要很少的培训，并且可以产生一致的客观量化结果，同时提供易于数字归档的永久性照片记录。