| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for visualizing a density gradient of an air current by simple image operation without requiring a concave mirror and a convex lens. <P>SOLUTION: In the method for visualizing the density gradient, a background image is arranged on the back of a measurement area, a digital camera is arranged on the front side, and result image obtained by calculating a difference in each pixel and a density gradient from two images, i.e. a reference image obtained by photographing the measurement area in a state of no density distribution and a measurement image obtained by imaging the measurement area in a state of generating density distribution is used. <P>COPYRIGHT: (C)2012,JPO&INPIT |
