暂时使用星下点坐标作为图像左上角坐标

pkg/producer/jpg.go

@@ -59,9 +59,7 @@ func GTiffToJPG(ftiff, fjpg string, reversed bool) error {
 	channels := gocv.Split(img)
 	for i, ch := range channels {
 		// 2. 计算图像的最小值和最大值
-		minVal, maxVal, minLoc, maxLoc := gocv.MinMaxLoc(ch)
-		log.Printf("Min value: %f, Max value: %f, min location: %v, max location: %v", minVal, maxVal, minLoc, maxLoc)
-
+		minVal, maxVal, _, _ := gocv.MinMaxLoc(ch)
 		// 3. 将16位图像线性拉伸到8位图像
 		scale := 255.0 / (maxVal - minVal)
 		shift := -minVal * scale
@@ -85,10 +83,6 @@ func GTiffToJPG(ftiff, fjpg string, reversed bool) error {
 		0, 0, gocv.InterpolationCubic)
 
 	// 7. 应用伽玛校正提升亮度
-	// avgBrightness := calculateAverageBrightness(img8bit)
-	// gamma := determineGammaValue(avgBrightness)
-	// log.Printf("Average Brightness: %f, Determined Gamma: %f", avgBrightness, gamma)
-
 	gammaCorrected := applyGammaCorrection(img8bit, 1.6) // 伽玛值
 	defer gammaCorrected.Close()
 	ok := gocv.IMWriteWithParams(fjpg, gammaCorrected, []int{gocv.IMWriteJpegOptimize, 1})
@@ -96,9 +90,6 @@ func GTiffToJPG(ftiff, fjpg string, reversed bool) error {
 		err = fmt.Errorf("error saving %s", fjpg)
 		return err
 	}
-
-	// gocv.IMWrite(strings.Replace(fjpg, ".jpg", "_8.jpg", 1), img8bit)
-
 	return nil
 }
 
@@ -121,24 +112,3 @@ func applyGammaCorrection(src gocv.Mat, gamma float64) gocv.Mat {
 	gocv.LUT(src, gammaMat, &dst)
 	return dst
 }
-
-// calculateAverageBrightness calculates the average brightness of the image
-func calculateAverageBrightness(img gocv.Mat) float64 {
-	if img.Channels() == 1 {
-		return img.Mean().Val1
-	}
-	gray := gocv.NewMat()
-	defer gray.Close()
-	gocv.CvtColor(img, &gray, gocv.ColorBGRToGray)
-	return gray.Mean().Val1
-}
-
-// determineGammaValue determines an appropriate gamma value based on the average brightness
-func determineGammaValue(avgBrightness float64) float64 {
-	targetBrightness := 180.0
-	if avgBrightness < 0.1 {
-		return 1.0
-	}
-	gamma := math.Log(targetBrightness/255.0) / math.Log(avgBrightness/255.0)
-	return gamma
-}