Infrared image denoising applied in infrared sound field measurement

The research made use of the heat property and explored the distribution of focused ultrasound field. In our experiments, we measured the distribution of heat sources, and then, calculated the distribution of focused ultrasound field via a liner relation. In the experiments, we got a series of infrared images with noise. It’s such an important thing to find out a solution to get rid of the noise in those images in order to get an accurate focused ultrasound field distribution. So the investigation following is focused in finding out a filter which can remove most noise in the infrared charts and the distribution of ultrasound filed is not impacted. Experiments compared the effects of different filters by the index of - 6dB width of the temperature rise images. By this index, we can find out a filter which is the most suitable filter for keeping the distribution of focused ultrasound field in steady. All experiments, including simulations, semi-simulations and actual verification experiments used six filte...