Quaternion Wavelet Analysis and Application in Image Denoising

Figure 2

The quaternion wavelet transform of image Barbara. (a)–(e) Original image, magnitude, and the 3 terms of phase (𝜑,𝜃,𝜓).

(a) Original image

(b) Magnitude

(c) Phase 𝜑

(d) Phase 𝜃

(e) Phase 𝜓