Study On Integrated Geological Anomalies Information Extraction Based On High-Resolution Images Of Remote Sensing

This article relying on Huize lead-zinc deposits deep and peripheral concealed ore prospecting technology methods and increasing reserves research projects. As Huize Pb-Zn ore deposit is a research area, taking advantage of the United States Landsat7ETM+images, Japanese ALOS images, the German RapidEye image and DEM data source. Using geometric correction, image cropping, color composite space conversion, image enhancement and other technical means to process the remote sensing images of the study area and to extract geomorphological information and structure information; using flexible mask technology to remove water, shadow and so on interference information, applying the principal component analysis (PCA) and threshold segmentation technique to extract iron stained and hydroxyl alteration abnormalities information; Combined with regional geological, geophysical anomalies, geochemical anomalies and other diversified Geo-information comprehensive analysis, carried out the study area remote sensing prospecting forecast, delineated the remote sensing prospecting areas for the study area, provided the basic data and decision-making reference for the mine peripheral prospecting.The core of this thesis is to dig deeper comprehensive remote sensing data that contains geological exception information, and to establish an effective expression parameter and model. The more mature models and methods about structural information and alteration information extraction can be learn from, but the vegetation coverage area lithology, geomorphology information extraction and which contains the geological significance remains to be further exploration and validation. This is where the main difficulty and innovation.The main research work about this thesis are as follows:(1) for the study area of terrain undulation, vegetation cover and more features, making the pre-processing of remote sensing data about the study area with geometric precision correction, image enhancement and other means, highlight regional linear structure and geomorphology information;(2) making research on the basic characteristics of lineament in the remote sensing image and carrying out comprehensive quantitative analysis; (3) to extract geomorphological information and analysis of the inherent geological significance;(4) building a "line ring structure+topography positions+alteration anomaly" new concept of remote sensing integrated geological anomaly system, the information on the basis of the characteristics and spectral characteristics of the anomaly space hosted in-depth analysis of remote sensing data, proved to be rich in remote sensing as information technology support, can play a role as an independent parameter in mineral resources prediction and evaluation of applications.(5) making depth elaboration on the works of the Mask to interfere+Principal Component Analysis+Abnormal Dassification in the alteration anomaly extraction works various processes, and effectively improving the effect of vegetation coverage area alteration anomaly information extraction, summed up a set for the study area of remote sensing alteration the exception information extraction workflow.