From 8f3d45ded35c23d233b9891d3d69de2635f2a125 Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期四, 14 九月 2023 17:32:41 +0800
Subject: [PATCH] 栅格分析按照Band进行计算~
---
src/main/java/com/moon/server/service/data/RasterAnalysisService.java | 131 +++++++++++++++++--------------------------
1 files changed, 51 insertions(+), 80 deletions(-)
diff --git a/src/main/java/com/moon/server/service/data/RasterAnalysisService.java b/src/main/java/com/moon/server/service/data/RasterAnalysisService.java
index 8d3d40d..80be306 100644
--- a/src/main/java/com/moon/server/service/data/RasterAnalysisService.java
+++ b/src/main/java/com/moon/server/service/data/RasterAnalysisService.java
@@ -14,11 +14,7 @@
import org.gdal.gdal.gdal;
import org.gdal.ogr.Geometry;
import org.gdal.ogr.ogr;
-import org.gdal.osr.SpatialReference;
-import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.springframework.stereotype.Service;
-import org.geotools.referencing.CRS;
-import sun.awt.IconInfo;
import javax.annotation.Resource;
import java.awt.geom.Point2D;
@@ -133,16 +129,11 @@
int xPixel = (int) Math.floor((x - minX) / pixelWidth);
int yPixel = (int) Math.floor((maxY - y) / Math.abs(pixelHeight));
- List<double[]> list = new ArrayList<>();
for (int i = 1; i <= bandCount; i++) {
double[] pixelValues = new double[size * size];
Band band = ds.GetRasterBand(i);
band.ReadRaster(xPixel, yPixel, size, size, pixelValues);
-
- list.add(pixelValues);
}
-
- processResult(entity, list);
}
/**
@@ -210,8 +201,7 @@
}
}
}
-
- processResult(list, entity);
+ // processResult(list, entity)
}
/**
@@ -233,16 +223,12 @@
int geoWidth = Math.abs(xMaxPixel - xMinPixel);
int geoHeight = Math.abs(yMaxPixel - yMinPixel);
- List<double[]> list = new ArrayList<>();
for (int i = 1; i <= bandCount; i++) {
- Band band = ds.GetRasterBand(i);
double[] pixelValues = new double[geoWidth * geoHeight];
- band.ReadRaster(xMinPixel, yMinPixel, geoWidth, geoHeight, pixelValues);
+ ds.GetRasterBand(i).ReadRaster(xMinPixel, yMinPixel, geoWidth, geoHeight, pixelValues);
- list.add(pixelValues);
+ setBandVals(entity, pixelValues);
}
-
- processResult(entity, list);
}
/**
@@ -254,75 +240,22 @@
}
/**
- * 澶勭悊缁撴灉
+ * 璁剧疆Band鍊�
*/
- private void processResult(AnalysisResultEntity entity, List<double[]> list) {
- if (null == list || list.isEmpty()) {
+ private void setBandVals(AnalysisResultEntity entity, double[] pixelValues) {
+ if (null == pixelValues || pixelValues.length == 0) {
return;
}
- List<Double> rs = new ArrayList<>();
- for (double[] ds : list) {
- if (null != ds && ds.length > 0) {
- for (double d : ds) {
- rs.add(d);
- }
- }
+ List<Double> list = new ArrayList<>();
+ for (double val : pixelValues) {
+ list.add(val);
}
- processResult(rs, entity);
- }
-
- /**
- * 澶勭悊缁撴灉
- */
- private void processResult(List<Double> rs, AnalysisResultEntity entity) {
- if (null == rs || rs.isEmpty()) {
- return;
- }
-
- double avg = rs.stream().mapToDouble(Double::valueOf).average().getAsDouble();
- entity.setMin(Collections.min(rs));
- entity.setMax(Collections.max(rs));
- entity.setAvg(avg);
- }
-
- public void processClippedDataByLine(String imagePath, String geometryString) {
- // 娉ㄥ唽GDAL椹卞姩
- gdal.AllRegister();
- // 鎵撳紑鏍呮牸鍥惧儚鏁版嵁闆�
- Dataset dataset = gdal.Open(imagePath);
- if (dataset == null) {
- throw new RuntimeException("Failed to open raster dataset.");
- }
-
- Geometry geometry = Geometry.CreateFromWkt(geometryString);
-
- Dataset clippedDataset = clipRaster(dataset, geometry);
-
- int width = clippedDataset.GetRasterXSize();
- int height = clippedDataset.GetRasterYSize();
- int bandCount = clippedDataset.getRasterCount();
-
- List<double[]> sum = new ArrayList<>();
- for (int bandIndex = 1; bandIndex <= bandCount; bandIndex++) {
- Band band = clippedDataset.GetRasterBand(bandIndex);
-
- double[] pixelValues = new double[width * height];
- band.ReadRaster(0, 0, width, height, pixelValues);
-
- sum.add(pixelValues);
- }
- }
-
- public static Dataset clipRaster(Dataset dataset, Geometry geometry) {
- Vector<String> warpOptions = new Vector<>();
- warpOptions.add("-crop_to_cutline");
- warpOptions.add("-cutline");
- warpOptions.add(geometry.ExportToWkt());
- warpOptions.add("-dstalpha");
-
- return gdal.Warp("", new Dataset[]{dataset}, new WarpOptions(warpOptions));
+ double min = Collections.min(list);
+ double max = Collections.max(list);
+ double avg = list.stream().mapToDouble(Double::valueOf).average().getAsDouble();
+ entity.addBandVals(min, avg, max);
}
/**
@@ -370,4 +303,42 @@
return list;
}
+
+ private void processClippedDataByLine(String imagePath, String geometryString) {
+ // 娉ㄥ唽GDAL椹卞姩
+ gdal.AllRegister();
+ // 鎵撳紑鏍呮牸鍥惧儚鏁版嵁闆�
+ Dataset dataset = gdal.Open(imagePath);
+ if (dataset == null) {
+ throw new RuntimeException("Failed to open raster dataset.");
+ }
+
+ Geometry geometry = Geometry.CreateFromWkt(geometryString);
+
+ Dataset clippedDataset = clipRaster(dataset, geometry);
+
+ int width = clippedDataset.GetRasterXSize();
+ int height = clippedDataset.GetRasterYSize();
+ int bandCount = clippedDataset.getRasterCount();
+
+ List<double[]> sum = new ArrayList<>();
+ for (int bandIndex = 1; bandIndex <= bandCount; bandIndex++) {
+ Band band = clippedDataset.GetRasterBand(bandIndex);
+
+ double[] pixelValues = new double[width * height];
+ band.ReadRaster(0, 0, width, height, pixelValues);
+
+ sum.add(pixelValues);
+ }
+ }
+
+ private Dataset clipRaster(Dataset dataset, Geometry geometry) {
+ Vector<String> warpOptions = new Vector<>();
+ warpOptions.add("-crop_to_cutline");
+ warpOptions.add("-cutline");
+ warpOptions.add(geometry.ExportToWkt());
+ warpOptions.add("-dstalpha");
+
+ return gdal.Warp("", new Dataset[]{dataset}, new WarpOptions(warpOptions));
+ }
}
--
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