swt based image resolution enhancement
14 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
i am performing following operation on lena image but result are noisy one pls suggest.
GRAY =imread(file); %% SWT Wavelet Transform starts for Original image dwtmode('per'); [Lo_D,Hi_D,Lo_R,Hi_R] = wfilters('db9'); [LLS,LHS,HLS,HHS]=swt2(GRAY,1,Lo_D,Hi_D);
%%DWT Wavwlet transform
[LLD,LHD,HLD,HHD]=dwt2(GRAY,Lo_D,Hi_D); % interpolation of high frequencies by 2 LHDI = imresize(LHD,2,'bicubic'); HLDI = imresize(HLD,2,'bicubic'); HHDI = imresize(HHD,2,'bicubic');
ELH = imadd(LHDI,LHS); EHL = imadd(HLDI,HLS); EHH = imadd(HHDI,HHS); scale=4; LLI2 = imresize(GRAY,scale/2,'bicubic'); LHI2 = imresize(ELH,scale/2,'bicubic'); HLI2 = imresize(EHL,scale/2,'bicubic'); HHI2 = imresize(EHH,scale/2,'bicubic');
%%IDWT Wavwlet transform
EnhancedImg = idwt2(LLI2,LHI2,HLI2,HHI2,'db9'); figure; imshow(EnhancedImg,[]); title('Enhanced Image');
2 commentaires
Réponses (0)
Voir également
Catégories
En savoir plus sur Discrete Multiresolution Analysis dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!