Abstract: Stripe image enhancement has important applications in fingerprint image processing and recognition,structured light 3D reconstruction．This paper focused on stripe image processing of structured-light 3D reconstruction,pre-sented an enhancement algorithm for stripe image based on orientation and frequency fields constraint,designed calculation methods of image orientation and frequency fields,and constructed a Gabor filter based on orientation and frequency fields constraint．The enhancement algorithm includes following steps:firstly uses Gaussian filter to remove the effect of uneven illumination of the image,then calculates the orientation and frequency fields of stripe image,finally uses the Gabor filter to filter the image constrained by orientation and frequency fields．The experimental results show that the algorithm can eliminate the effects of uneven illumination of image effectively and enhance the stripe information of structured-light image preferably.

Key words: Structured-light image,Stripe enhancement,Orientation fields,Frequency fields,Gabor filter