文献类型： 会议论文

第一作者： Rubén Javier Medina Daza

作者： Rubén Javier Medina Daza ¹ ; Erika Upegui ² ;

作者机构： 1.Maestría en Ciencias de la Información y las Comunicaciones Grupo GEFEM, Universidad Distrital Francisco José de Caldas, Bogotá D. C., Colombia

2.Proyecto Curricular Ingeniería Catastral y Geodesia Grupo GEFEM, Universidad Distrital Francisco José de Caldas, Bogotá D. C., Colombia

关键词： Wavelet transforms;Earth;Satellites;Correlation;Artificial satellites;Information filters;Sugar industry

会议名称： Iberian Conference on Information Systems and Technologies

主办单位：

页码： 1-6

摘要： In this article, the High Pass Filter-HPF, and Wavelet à trous transforms are developed mathematically, to later implement them in Matlab. The fusion of satellite images is performed with each one of the implemented transforms, with a proposed methodology. A Landsat 8 OLI/TIRS image (Panchromatic - PAN and multispectral - MULTI) of a northwestern sector of Peru -where sugar cane crops are evident- is used to generate two fused images, namely: MULTI HPF and MULTI TWA . The fused images were evaluated both in spatial and spectral quality through four indices, specifically: correlation index, ERGAS, RASE and Q index, in order to determine the efficiency of the proposed methods. Best results of the spectral evaluation were obtained with the MULTI TWA image, achieving correlations higher than 0.95, a Q index of 0.96 and a RASE value of 9.2%, while spatially higher values than 0.96. Regarding spatial richness, the best results were obtained with MULTI HPF with an ERGAS of 14.6, a RASE of 29.3% and a Q of 0.7.

分类号： tp3-53