<p>Wavelet theory has gained significant importance in both pure and applied mathematics due to its wide-ranging applications in various scientific and engineering disciplines. This paper explores the versatility and effectiveness of wavelets in addressing key challenges in image processing, including compression, noise reduction, feature extraction, and object recognition. Notable achievements include the FBI's adoption of wavelet-based digital fingerprint image compression and the establishment of JPEG2000 as the current image compression standard. Wavelet shrinkage methods, motivated by diverse mathematical fields such as partial differential equations, calculus of variations, harmonic analysis, and statistics, are a central focus of this study. These methods, particularly when analyzed within the context of minimax estimation, demonstrate their capability to generate asymptotically optimal estimates for noisy data, surpassing the performance of linear estimators. Furthermore, the paper emphasizes the advantages of the continuous wavelet transform over the discrete wavelet transform. These advantages include weaker constraints on the generating function, greater flexibility in selecting scale and translation parameters, and wide-ranging applications in pattern recognition, feature extraction, and detection</p>