62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
package producer
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import (
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"os"
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"time"
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"github.com/airbusgeo/godal"
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log "github.com/sirupsen/logrus"
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"starwiz.cn/sjy01/image-proc/pkg/calculator"
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)
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func setGeoTransform(ds *godal.Dataset, topLeftLng, topLeftLat, resolution float64) {
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// 转换分辨率（米到度）
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resLat := resolution / calculator.MetersPerDegreeLatitude
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resLng := calculator.MetersToDegreesLongitude(resolution, topLeftLat)
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// 设置地理变换（假设左上角坐标为(0,0)，PAN每个像素分辨率为1.2米）
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geotransform := [6]float64{
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topLeftLng, // top left x
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resLng, // w-e pixel resolution
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0, // rotation, 0 if image is "north up"
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topLeftLat, // top left y
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0, // rotation, 0 if image is "north up"
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-resLat, // n-s pixel resolution (negative value)
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}
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err := ds.SetGeoTransform(geotransform)
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if err != nil {
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log.Errorf("Failed to set GeoTransform: %v", err)
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return
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}
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// 设置投影为 WGS84
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srs, err := godal.NewSpatialRefFromEPSG(4326) // gdal.CreateSpatialReference("")
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if err != nil {
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log.Errorf("Failed to set spatial reference: %v", err)
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return
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}
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projWKT, err := srs.WKT()
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if err != nil {
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log.Errorf("Failed to convert spatial reference to WKT: %v", err)
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return
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}
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err = ds.SetProjection(projWKT)
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if err != nil {
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log.Errorf("Failed to set projection: %v", err)
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}
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// 设置一些常见的元数据（可选）
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ds.SetMetadata("TIFFTAG_DATETIME", time.Now().String())
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ds.SetMetadata("TIFFTAG_SOFTWARE", "StarWiz-SJY01-IMAGE-PROC")
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}
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func sizeOfFile(file string) int64 {
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fileInfo, err := os.Stat(file)
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if err != nil {
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log.Errorf("Failed to get file size: %v", err)
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return 0
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}
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return fileInfo.Size()
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}
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