CAJ | 학술논문

选择北京密云水库及周边地区为实验区，在分析多源数据融合层次和各种融合方法的基础上，针对TM与SPOT5数据运用IHS变换融合法、小波变换融合法以及IHS小波变换融合法分别进行融合实验。在小波变换以及IHS小波变换融合法中，分别采用了二维连续与离散的小波变换方式，研究了小波变换层数以及低频与高频分量系数的选择结果对于融合效果的影响。最后运用主观定性以及客观定量评价方法，经对不同指标的权重计分建立详细的等级评定，对融合结果进行评判。结果表明：在所选小波方法中，二维连续2层小波效果较好，而IHS结合二维连续2层小波方法效果较为突出。
선택북경밀운수고급주변지구위실험구，재분석다원수거융합층차화각충융합방법적기출상，침대TM여SPOT5수거운용IHS변환융합법、소파변환융합법이급IHS소파변환융합법분별진행융합실험。재소파변환이급IHS소파변환융합법중，분별채용료이유련속여리산적소파변환방식，연구료소파변환층수이급저빈여고빈분량계수적선택결과대우융합효과적영향。최후운용주관정성이급객관정량평개방법，경대불동지표적권중계분건립상세적등급평정，대융합결과진행평판。결과표명：재소선소파방법중，이유련속2층소파효과교호，이IHS결합이유련속2층소파방법효과교위돌출。
IHS transform can retain the complete information of high spatial resolution, and the wavelet transform fusion imaging has the better spectral information, therefore, the combination of the two transform image fusion can take advan?tage of their respective strengths to provide high?quality images for the subsequent information extraction. Based on the analyses of multi?sources data fusion methods at different levels, Beijing Miyun Reservoir and its surroundings were se?lected as the study area in this research. The data fusion methods including IHS transform, wavelet transform and inte?grated wavelet?IHS transform were firstly used to experiment with Landsat TM multispectral image and SPOT5 panchro?matic image. Furthermore, in the fusion methods of wavelet transform and IHS wavelet transform, the two?dimensional continuous and discrete wavelet transform were used respectively, and the effects of the wavelet transformation layer numbers as well as the selection of the low?frequency coefficients and the high?frequency coefficients on the resulting fused images were discussed. Finally, the fusion results were evaluated by using subjectively qualitative method and ob?jectively quantitative indices, after establishing elaborated ratings to each weight of the index. The results showed that the two?dimensional continuous wavelet method with two layers had better comprehensive effects among the three methods of wavelet, while IHS transform fusion method combined with the two?dimensional continuous wavelet method with two lay?ers could maintain better spectral and spatial resolution, which mean the image quality could be improved significantly by fusing the data of Landsat TM and SPOT5 by using wavelet transform integrated with IHS, providing data security for image classification,information extraction and vegetation monitoring based on the remote sensing technique.