import Metashape
import sys

"""
Metashape Sparse Point Cloud Filter Script (v 1.7)
Matjaz Mori, CPA, June 2019
Usage:
Workflow -> Batch Process -> Add -> Run script
In the row "Argumets" we enter exactly 4 values without spaces for: ReprojectionError, ReconstructionUncertainty, ImageCount, ProjectionAccuracy in this order.
ex: 1 15 3 5
or
leave the "Arguments" line blank, in which case the default values will be used,
which can also be modified in the script itself under the variables def_reperr, def_recunc, def_imgcount and def_projacc.
When using, it is advisable to monitor the Console (View -> Console).
"""

def_reperr = 1
def_recunc = 15
def_imgcount = 3
def_projacc = 5

paramNo = len(sys.argv)

reperr = float(sys.argv[1] if paramNo == 5 else def_reperr)
recunc = float(sys.argv[2] if paramNo == 5 else def_recunc)
imgcount = float(sys.argv[3] if paramNo == 5 else def_imgcount)
projacc = float(sys.argv[4] if paramNo == 5 else def_projacc)


for chunk in Metashape.app.document.chunks:
    f = Metashape.TiePoints.Filter()
    f.init(chunk, Metashape.TiePoints.Filter.ReprojectionError)
    f.removePoints(reperr)

for chunk in Metashape.app.document.chunks:
    f = Metashape.TiePoints.Filter()
    f.init(chunk, Metashape.TiePoints.Filter.ReconstructionUncertainty)
    f.removePoints(recunc)

for chunk in Metashape.app.document.chunks:
    f = Metashape.TiePoints.Filter()
    f.init(chunk, Metashape.TiePoints.Filter.ImageCount)
    f.removePoints(imgcount)

for chunk in Metashape.app.document.chunks:
    f = Metashape.TiePoints.Filter()
    f.init(chunk, Metashape.TiePoints.Filter.ProjectionAccuracy)
    f.removePoints(projacc)

if paramNo == 5:
    print("Number of entered arguments: " + str(paramNo - 1) + ". Used values:")
else:
    print("Number of entered arguments: " + str(paramNo - 1) + ". Default values were used:")

print("ReprojectionError Level: ")
print(reperr)
print("ReconstructionUncertainty Level: ")
print(recunc)
print("ImageCount Level: ")
print(imgcount)
print("ProjectionAccuracy Level: ")
print(projacc)
