Fig. 1. Principle of shearography interference

Fig. 2. Denoising method based on bitonic filtering and sine-cosine transform

Fig. 3. Experimental setup of shearography system

Fig. 4. Phase maps after filtering and diagrams of phase distribution in x-axis

Fig. 5. Sine and cosine phase maps before and after filtering

Fig. 6. Phase maps after filtering and corresponding phase distributions in x-axis