Fig. 1. Effect of different denoising methods. (a) Simulated phase image; (b) noisy phase image; (c) TV; (d) ATV; (e) our method

Fig. 2. ATV denoising process of the sine-cosine decomposition algorithm. (a) Original phase image; (b) phase image obtained by sine transformation; (c) phase image obtained by cosine transformation; (d) phase image of sine transformation obtained by ATV denoising; (e) phase image of cosine transformation obtained by ATV denoising; (f) phase image of arctangent synthesis

Fig. 3. Denoising effect of different p(x,y). (a) p(x,y)=1.10; (b) p(x,y)=1.30; (c) p(x,y)=1.45; (d) p(x,y)=1.50; (e) p(x,y)=1.55; (f)

Fig. 4. Phase distribution of the horizontal center axis. (a) Simulated phase image; (b) original phase image; (c) phase image after denoising by ATV method; (d) phase image after denoising by our method

Fig. 5. Unwrapping image obtained by different methods. (a) Original phase image; (b) TV; (c) ATV; (d) our method

Fig. 6. Deformation field distribution of the measured object obtained by different denoising methods. (a)--(d) Deformation field distribution corresponding to Fig. 5(a)--Fig. 5(d)

Fig. 7. Deformation field distribution of the measured object with different parameter p(x,y). (a)--(f) Deformation field distribution corresponding to Fig. 3(a)--Fig. 3(f)