(2024/11/21)
需要Metashape导出权限

1、直接从构建3D模型的深度图中导出。可能会出现深度图缺失的情况，并且需要调整位深和分辨率（来源：https://www.agisoft.com/forum/index.php?topic=12549.0）：

import Metashape
from PySide2 import QtGui, QtCore, QtWidgets

global NUMPY
NUMPY = True

try:
	import numpy
except ImportError:
	NUMPY = False
	print("numpy module not installed!")
	
	
class ExportDepthDlg(QtWidgets.QDialog):

	def __init__ (self, parent):
		QtWidgets.QDialog.__init__(self, parent)
		self.setWindowTitle("Export depth maps")
		
		self.btnQuit = QtWidgets.QPushButton("&Close")
		self.btnP1 = QtWidgets.QPushButton("&Export")
		self.pBar = QtWidgets.QProgressBar()
		self.pBar.setTextVisible(False)
		
		#self.selTxt =QtWidgets.QLabel()
		#self.selTxt.setText("Apply to:")
		self.radioBtn_all = QtWidgets.QRadioButton("Apply to all cameras")
		self.radioBtn_sel = QtWidgets.QRadioButton("Apply to selected")
		self.radioBtn_all.setChecked(True)
		self.radioBtn_sel.setChecked(False)
		
		self.formTxt = QtWidgets.QLabel()
		self.formTxt.setText("Export format:")
		self.formCmb = QtWidgets.QComboBox()
		self.formCmb.addItem("1-band F32")
		self.formCmb.addItem("Grayscale 8-bit")
		self.formCmb.addItem("Grayscale 16-bit")
		
		layout = QtWidgets.QGridLayout()   #creating layout
		#layout.setSpacing(10)	
		layout.addWidget(self.radioBtn_all, 0, 1)
		layout.addWidget(self.radioBtn_sel, 1, 1)	
		layout.addWidget(self.formTxt, 0, 2)	
		layout.addWidget(self.formCmb, 1, 2)	
		layout.addWidget(self.pBar, 2, 0)
		layout.addWidget(self.btnP1, 2, 1)
		layout.addWidget(self.btnQuit, 2, 2)
		self.setLayout(layout) 
		
		proc_depth = lambda : self.export_depth()
		QtCore.QObject.connect(self.btnP1, QtCore.SIGNAL("clicked()"), proc_depth)
		QtCore.QObject.connect(self.btnQuit, QtCore.SIGNAL("clicked()"), self, QtCore.SLOT("reject()"))	

		self.exec()


	def export_depth(self):
	
		global NUMPY
		if not NUMPY:
			Metashape.app.messageBox("Script aborted: numpy module is not installed.")
			return 0

		app = QtWidgets.QApplication.instance()
		global doc
		doc = Metashape.app.document
		chunk = doc.chunk #active chunk
		
		if self.formCmb.currentText() == "1-band F32":
			F32 = True
		elif self.formCmb.currentText() == "Grayscale 8-bit":
			F32 = False
		elif self.formCmb.currentText() == "Grayscale 16-bit":
			F32 = False
		else:
			print("Script aborted: unexpected error.")
			return 0
			
		selected = False
		camera_list = list()
		if self.radioBtn_sel.isChecked():
			selected = True
			for camera in chunk.cameras:
				if camera.selected and camera.transform and (camera.type == Metashape.Camera.Type.Regular):
					camera_list.append(camera)
		elif self.radioBtn_all.isChecked():
			selected = False
			camera_list = [camera for camera in chunk.cameras if (camera.transform and camera.type == Metashape.Camera.Type.Regular)]


		if not len(camera_list):
			print("Script aborted: nothing to export.")
			return 0	
			
		output_folder = Metashape.app.getExistingDirectory("Specify the export folder:")
		if not output_folder:
			print("Script aborted: invalid output folder.")	
			return 0

		print("Script started...")
		app.processEvents()
		if chunk.transform.scale:
			scale = chunk.transform.scale
		else:
			scale = 1
		count = 0
		
		for camera in camera_list:
			if camera in chunk.depth_maps.keys():
				depth = chunk.depth_maps[camera].image()
				if not F32:
					img = numpy.frombuffer(depth.tostring(), dtype=numpy.float32)
					depth_range = img.max() - img.min()
					img = depth - img.min()
					img = img * (1. / depth_range)
					if self.formCmb.currentText() == "Grayscale 8-bit":
						img = img.convert("RGB", "U8")	
						img = 255 - img
						img = img - 255 * (img * (1 / 255))#normalized
						img = img.convert("RGB", "U8")
					elif self.formCmb.currentText() == "Grayscale 16-bit":
						img = img.convert("RGB", "U16")
						img = 65535 - img
						img = img - 65535 * (img * (1 / 65535))#normalized		
						img = img.convert("RGB", "U16")
				else:
					img = depth * scale
				img.save(output_folder + "/" + camera.label + ".tif")
				print("Processed depth for " + camera.label)
				count += 1
				self.pBar.setValue(int(count / len(camera_list) * 100))
				app.processEvents()
		self.pBar.setValue(100)
		print("Script finished. Total cameras processed: " + str(count))
		print("Depth maps exported to:\n " + output_folder)
		return 1


def export_depth_maps():

	app = QtWidgets.QApplication.instance()
	parent = app.activeWindow()
	dlg = ExportDepthDlg(parent)
	
Metashape.app.addMenuItem("Custom menu/Export Depth Maps", export_depth_maps)	

2、从构建完成的模型中渲染深度图。（来源：https://www.agisoft.com/forum/index.php?topic=12392.msg55345#msg55345
）

for camera in chunk.cameras:

	depth = chunk.model.renderDepth(camera.transform, camera.sensor.calibration)
	depth = depth.convert(" ","F16")
	compr = Metashape.ImageCompression()
	compr.tiff_compression = Metashape.ImageCompression().TiffCompressionDeflate
	depth.save("savepath" + camera.label + ".tif", compression = compr)