Images Process in Twice Flashes PIV Measurement System
In order to acquire sequence images in PIV measurement system of a liquid- continuous impinging streams, two laser flashers, red and green, are used in PTV measurement system. After the digital camera is triggered, the two flashers flash in a short interval during the exposure period. The red light and the green light illuminate the same region so that the image records the movements of tracing particles in two colors. Using digital image process technology, two images, the red one and the green one, can be obtained from the original image. Based on the two images, the flow field parameters can be calculated. The method possesses predominant advantages: high speed field can be measured using an ordinary camera and the two images have determinate time labels, so the moving direction of the particles can be determined easily. The main steps of the method include the transition from Bayer matrix to RGB matrix, the pretreatment of the images, the canalization of the velocity and the arrangement of the results.
Particle image velocimetry image processing laser digital camera
Li Fubao Wang Dexi Li Qin
Shenyang University of Technology,Shenyang 111003 China
国际会议
厦门
英文
1093-1096
2010-05-22（万方平台首次上网日期，不代表论文的发表时间）