使用gamma校正提升jpg亮度

pkg/producer/scenes.go

@@ -0,0 +1,163 @@
+package imageproc
+
+import (
+	"fmt"
+	"image"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/airbusgeo/godal"
+	log "github.com/sirupsen/logrus"
+	"gocv.io/x/gocv"
+)
+
+type Scene struct {
+	Width  int
+	Height int
+	X      int // coordinate of the left top corner of the scene
+	Y      int
+	Mat    []gocv.Mat
+	Tiff   string
+}
+
+func (s *Scene) Cleanup() {
+	for i := range s.Mat {
+		s.Mat[i].Close()
+	}
+}
+
+// 对 PAN 和 配准后的MSS 在 Y 方向进行分景，景之间有25%的重叠
+// 默认分景大小：
+// MSS  2336 * 2336
+// PAN  9344 * 9344
+func (r *Registrator) SubScenes() (panScenes []*Scene, mssScenes []*Scene, err error) {
+	hPAN := (9344 - 2336)
+	hPANOverlap := 2336
+	panScenesCnt := r.PanHeight / hPAN
+
+	for i := 0; i < panScenesCnt; i++ {
+		y1 := (i+1)*hPAN + hPANOverlap
+		if y1 > r.PanHeight {
+			y1 = r.PanHeight
+		}
+
+		scene := &Scene{
+			Width:  9344,
+			Height: y1 - i*hPAN,
+			X:      0,
+			Y:      i * hPAN,
+		}
+
+		mat := r.PanImage.Region(image.Rect(0, i*hPAN, 9344, y1))
+		scene.Mat = append(scene.Mat, mat)
+		panScenes = append(panScenes, scene)
+	}
+
+	hMSS := hPAN / 4
+	hMSSOverlap := hPANOverlap / 4
+	mssScenesCnt := r.MssHeight / hMSS
+	for i := 0; i < mssScenesCnt; i++ {
+		y1 := (i+1)*hMSS + hMSSOverlap
+		if y1 > r.MssHeight {
+			y1 = r.MssHeight
+		}
+
+		scene := &Scene{
+			Width:  2336,
+			Height: y1 - i*hMSS,
+			X:      0,
+			Y:      i * hMSS,
+		}
+
+		for band := 0; band < 4; band++ {
+			mat := r.registeredMssImages[band].Region(image.Rect(0, i*hMSS, 2336, y1))
+			scene.Mat = append(scene.Mat, mat)
+		}
+
+		mssScenes = append(mssScenes, scene)
+	}
+
+	if len(panScenes) != len(mssScenes) {
+		log.Error("pan and mss scenes count not match")
+		err = fmt.Errorf("pan and mss scenes count not match")
+	}
+
+	return panScenes, mssScenes, err
+}
+
+func (r *Registrator) SaveScenesToTiff(panScenes []*Scene, mssScenes []*Scene) error {
+	for i, scene := range panScenes {
+		dir := filepath.Join(r.Params.OutputDir, fmt.Sprintf("%03d", i+1), "PAN")
+		os.MkdirAll(dir, 0755)
+
+		tiff := filepath.Base(r.Params.PanTiffFile)
+		tiff = strings.TrimSuffix(tiff, ".tiff")
+		filename := fmt.Sprintf("%s_%03d.tiff", tiff, i+1)
+		scene.Tiff = filepath.Join(dir, filename)
+		err := savePanToGDALGTiff(scene.Mat[0], scene.Tiff)
+		if err != nil {
+			log.Errorf("save pan scene %d to tiff failed: %v", i+1, err)
+			return err
+		}
+
+		GTiffToJPG(scene.Tiff, strings.Replace(scene.Tiff, ".tiff", ".jpg", 1), false)
+	}
+
+	for i, scene := range mssScenes {
+		dir := filepath.Join(r.Params.OutputDir, fmt.Sprintf("%03d", i+1), "MSS")
+		os.MkdirAll(dir, 0755)
+
+		tiff := filepath.Base(r.Params.MssTiffFile)
+		tiff = strings.TrimSuffix(tiff, ".tiff")
+		filename := fmt.Sprintf("%s_%03d.tiff", tiff, i+1)
+		scene.Tiff = filepath.Join(dir, filename)
+
+		rgbirImage, _ := r.MergeMSSToBGRNIR(scene.Mat)
+		err := SaveBGRToGDALGTiff(rgbirImage,
+			4, 5,
+			[]godal.ColorInterp{godal.CIBlue, godal.CIGreen, godal.CIRed, godal.CIUndefined},
+			scene.Tiff)
+		if err != nil {
+			log.Errorf("save mss scene %d to tiff failed: %v", i+1, err)
+			return err
+		}
+
+		GTiffToJPG(scene.Tiff, strings.Replace(scene.Tiff, ".tiff", ".jpg", 1), false)
+	}
+
+	return nil
+}
+
+func (r *Registrator) DoScenePansharpen(panScenes []*Scene, mssScenes []*Scene) error {
+	for i := 0; i < len(panScenes); i++ {
+		// rgbirImg, _ := r.MergeMSSToBGRNIR(mssScenes[i].Mat)
+		// ihsImage := PansharpenIHS(panScenes[i].Mat[0], rgbirImg)
+		// path := strings.TrimSuffix(r.Params.MssTiffFile, ".tiff")
+		// filename := fmt.Sprintf("%s_%03d_FUS.tiff", path, i+1)
+
+		// SaveBGRToGDALGTiff(ihsImage, 3, 1.25, filename)
+		fusedTiff, err := GDALPansharpen(panScenes[i].Tiff, mssScenes[i].Tiff)
+		if err != nil {
+			return err
+		}
+
+		GTiffToJPG(fusedTiff, strings.Replace(fusedTiff, ".tiff", ".jpg", 1), true)
+	}
+	return nil
+}
+
+func (r *Registrator) MergeMSSToBGRNIR(channels []gocv.Mat) (gocv.Mat, error) {
+	var rgbirImage gocv.Mat
+	if len(channels) != 4 {
+		return rgbirImage, fmt.Errorf("mss channels count not match")
+	}
+
+	rgbirImage = gocv.NewMat()
+	gocv.Merge(channels, &rgbirImage)
+	log.Printf("merge mss to bgr nir image, channels: %d, height: %d, width: %d",
+		rgbirImage.Channels(), rgbirImage.Rows(), rgbirImage.Cols())
+
+	return rgbirImage, nil
+
+}