摘要：AbstractThe quantification of underwater gas leakage using optical and ultrasound technologies is presented. In the optical method, a high-speed camera is utilized, and the captured images are processed with segmentation techniques. The bubble is considered as an ellipsoid and its projected largest diameter is determined. The case of bubbles partial overlapping is also processed. In the ultrasound method, a ultrasonic linear array is used to capture images. For both methods, vertical speed, size of the bubbles, the bubble emission rate and the leak rate are measured. The results of the optical and acoustic methods are compared and analyzed.
