Fusion of Two Grayscale Images Using Wavelet Transform

Fusion of two grayscale images using wavelet transform: Perform 2-level decomposition on image 1 with sym4 wavelet function, then process decomposition coefficients for fusion by emphasizing contours and suppressing details. Apply 2-level decomposition with sym4 wavelet to image 2. Finally, fuse images in wavelet transform domain and reconstruct fused coefficients. Implementation involves wavelet decomposition, coefficient processing, and inverse wavelet transform.