CAJ | 학술논문

采用小波IHS变换、小波PCA变换、EHLERS变换等五种不同融合技术对SPOT5的多光谱影像和全色影像进行融合，并从均值、标准差等方面对融合结果进行了评价。研究表明：EHLERS融合后影像有很好的整体视觉效果，但在细节表达方面有所缺陷；改进后的IHS融合后影像清晰度较低；PCA变换融合容易导致影像失真；而小波IHS和小波PCA融合技术以数据保留量大、失真程度小、视觉效果好、影像层次分明等特点证明了小波分解技术的优势。
채용소파IHS변환、소파PCA변환、EHLERS변환등오충불동융합기술대SPOT5적다광보영상화전색영상진행융합，병종균치、표준차등방면대융합결과진행료평개。연구표명：EHLERS융합후영상유흔호적정체시각효과，단재세절표체방면유소결함；개진후적IHS융합후영상청석도교저；PCA변환융합용역도치영상실진；이소파IHS화소파PCA융합기술이수거보류량대、실진정도소、시각효과호、영상층차분명등특점증명료소파분해기술적우세。
In this paper, the author fuses panchromatic and multi -spectral image of SPOT 5 satellite using 5 different methods inclu- ding IHS wavelet transform, PCA wavelet transform and EHLERS transform, evaluates the fusion results by mean value, standard deviation and several other indexes. The result of the research shows that： EHLERS fused image is remarkable in overall visual effects, but is deficient in detail expression;improved IHS fused image is low in resolution;PCA transform is prone to image distortion. However,the wavelet PCA and the wavelet IHS methods prove the advantages of wavelet decomposition technique with the characteristics of massive data retention, less distortion, better visual quality, distinct gradation, and etc.