A non-contact vein image acquisition method and device

The invention discloses a non-contact vein image acquisition method and device. the B-ultrasonic hand back of the body part containing the vein is collected through the three-dimensional B-ultrasonicwave; a B ultrasonic image of the front arm; The edge detection algorithm is used for scanning the low-frequency smooth subgraph to obtain the blood vessel edge image, so that a clear vein image is obtained, the contrast ratio of the collected vein image is high, noise can be effectively removed, large distortion is avoided, the definition of the image is improved, the contrast ratio of the vein image is enhanced, and white noise in the vein image is reduced or even eliminated. 本发明公开了一种非接触式静脉图像采集方法及装置，通过三维立体B超采集含有静脉的身体部位的B超手背、前臂的B超图像，并通过边缘检测算法扫描低频平滑子图得到血管边缘图像，从而获取到清晰的静脉图像，使采集的静脉图像对比度高，可有效地去除噪声，不出现大的失真，改善图像的清晰度，增强静脉图像的对比度，减少了甚至消除了静脉图片中的白噪声。