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�������պ����ѧѧ�� 2004, Vol. 30 Issue (05) :456-460    DOI:
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κ���1, �깦1, ����Ȫ2*
1. �������պ����ѧ ���տ�ѧ�빤��ѧԺ, ���� 100083;
2. �������պ����ѧ ��ѧԺ, ���� 100083
Research of digital holography PIV technique
Wei Runjie1, Shen Gongxin1, Ding Hanquan2*
1. School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics�� Beijing 100083, China;
2. School of Science, Beijing University of Aeronautics and Astronautics�� Beijing 100083, China

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ժҪ ͨ��ȫϢ���༰���ֵ����۷���,����������ȫϢ�������ֵģ��,���ÿ��ٸ���Ҷ�任����(FFT)�����㵽�ĸ������ƽ�����ͼ��Ƶ����źŷ���,ʵ��������ȫϢ�ĸ�Ƶ���˲�������ȫϢͼ��С�������ּ���,Ӧ��������ȫϢ����ͼ�����DHPIV(Digital Holography Particle Image Velocimetry)����.����������ԽǸ������������������������,�õ��˿ռ��е���ά�ٶ��������ֲ�,�����õ�����ά���ߵĿռ�ֲ�,ʵ���˾���ʱ������ȫ������ά�ռ����ά�ٶȳ�����.
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Abstract�� The principal formula of digital holography was deduced and verified from the analysis of holography using Hugeness-Fressnel theory and computer simulation. The thin focus depth of reconstructed 3-D digital image using in holography particle image velocimetry was created by a digital image phase filter method. The velocity vector field with 3-components in 3-D space was computed by 3-D cross-correlation algorithm with thin depth image slices after using phase filter and non-linear image filter. The 3-D vector and streamline results in a cubic flow field were achieved by using DHPIV technique. The results demonstrated an important step was made for the practicality of holography PIV.
Keywords�� digital holography   digital phase filter   CCD   PIV   complex flow     
Received 2002-12-30;
About author: κ���(1974-),��,ɽ���ൺ��,��ʿ��, manager@PIV.com.cn.
κ���, �깦, ����Ȫ.����ȫϢ����ͼ����ټ����о�[J]  �������պ����ѧѧ��, 2004,V30(05): 456-460
Wei Runjie, Shen Gongxin, Ding Hanquan.Research of digital holography PIV technique[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(05): 456-460
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2004/V30/I05/456
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