Java 使用geotools读取tiff数据的示例代码

package com.dudu.gis;

import org.geotools.gce.geotiff.GeoTiffReader;

import org.geotools.geometry.GeneralEnvelope;

import org.junit.Test;

import org.opengis.coverage.grid.GridEnvelope;

import org.opengis.referencing.crs.CoordinateReferenceSystem;

import javax.media.jai.ImageLayout;

import java.awt.color.ColorSpace;

import java.awt.image.ColorModel;

import java.awt.image.SampleModel;

import java.io.IOException;

/**

  * 一般对于tiff数据的读取，都会借助于gdal

  * Java API库，但其实Java的geotools也

  * 封装了读取tiff文件的API

  */

public class GeoTiffReaderTest {

     private static final String TIF_PATH = "D:\\Gis开发\\数据\\影像数据\\tiff\\china.tif" ;

     @Test

     public void readTiffFile() throws IOException {

         /**

          * 使用GeoTiffReader

          */

         GeoTiffReader geoTiffReader = new GeoTiffReader(TIF_PATH);

         //获取到其bbox

         GeneralEnvelope envelope = geoTiffReader.getOriginalEnvelope();

         //获取到投影信息

         CoordinateReferenceSystem crs = geoTiffReader.getCoordinateReferenceSystem();

         //获取tiff的gridrange(网格范围，按像素说就是像素数量，也就是是tiff的rectangle)

         GridEnvelope gridEnvelope = geoTiffReader.getOriginalGridRange();

         //获取其图像相关信息

         ImageLayout imageLayout = geoTiffReader.getImageLayout();

         //获取colormodel

         ColorModel colorModel = imageLayout.getColorModel( null );

         //查看其通道数量

         int num = colorModel.getNumComponents();

         //是否支持透明

         boolean isAlpha = colorModel.hasAlpha();

         //获取颜色空间

         ColorSpace clorspace = colorModel.getColorSpace();

         //获取samplemodel

         SampleModel sampleModel = imageLayout.getSampleModel( null );

         //数据类型

         int datatype = sampleModel.getDataType();

     }

}