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Helimax

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Load a calibration file - precalibrated project
« on: April 02, 2015, 07:19:25 PM »
Hi !

I start with Python but I managed to do a lot of things thanks to this forum.
I'm stuck fort import calibration file (xml).

I saw this post but there have been changes since :
http://www.agisoft.com/forum/index.php?topic=1748.msg9189#msg9189

My script just below :

import PhotoScan
import os
import glob

app = PhotoScan.Application()
doc = PhotoScan.app.document
chunk = PhotoScan.app.document.addChunk()

AerialImageFiles = glob.glob("C:\\TRAVAUX EN COURS\\Agisoft Photoscan\\TEST SCRIPTS\\UHD Phototec\\431\\*.jpg")

cam = chunk.addCamera()
cam.open(AerialImageFiles[0])
# Load sensor calib
user_calib = PhotoScan.Calibration()
# build sensor object
sensor = chunk.addSensor()
sensor.label = "MyCamera"
sensor.width = 7360
sensor.height = 4912
sensor.fixed = True
sensor.user_calib = user_calib
user_calib.load("C:\\TRAVAUX EN COURS\\Agisoft Photoscan\\TEST SCRIPTS\\Calib.xml", "xml")

# LOAD AERIAL IMAGES
print("---Loading images...")
# load each image
for FileName in AerialImageFiles:
   #print("File: " + FileName)
   cam = chunk.addCamera()
   if not(cam.open(FileName)):
      app.messageBox("Loading of image failed: " + FileName)
   cam.label = FileName
   cam.sensor = sensor

os.chdir("C:\\TRAVAUX EN COURS\\Agisoft Photoscan\\TEST SCRIPTS\\UHD Phototec\\431")


There is no error message, but all calibration parameters are = "0"

My xml file (calibration) is ok when I load it "manually".

Can someone help me ?

Thanks.

Maxime

Alexey Pasumansky

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Re: Load a calibration file - precalibrated project
« Reply #1 on: April 02, 2015, 07:38:58 PM »
Hello Maxime,

It looks like you are at first assigning sensor.user_calib to the empty variable and then load calibration to the variable, but it is no longer connected.

You need to swap these lines.
Best regards,
Alexey Pasumansky,
Agisoft LLC

Helimax

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Re: Load a calibration file - precalibrated project
« Reply #2 on: April 03, 2015, 03:42:22 PM »
Hello Alexey,

Thank you for your quick response.
It works much better that way.

Have a good day !

Maxime

n@sk

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Re: Load a calibration file - precalibrated project
« Reply #3 on: May 06, 2015, 07:38:20 PM »
Hi Alexey,

I tried to adapt the code above, but keep getting the error below:

                        chunk.addPhotos(img_list)
         
         u_calib = PhotoScan.Calibration()
         u_calib.load(os.path.join(cameraPath,"calib.xml"), "xml")

         print(chunk.sensors[0].fixed)
         chunk.sensors[0].fixed = True

>True   ### (The camera group appears to have fixed calibration, even though at the GUI "Fix Calibration" is not ticked)
>sensor.fixed = True
  AttributeError: 'PhotoScan.Sensor' object attribute 'fixed' is read-only


What am I doing wrong, could you please advise?

thanks
         

Alexey Pasumansky

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Re: Load a calibration file - precalibrated project
« Reply #4 on: May 08, 2015, 12:43:53 PM »
Hello n@sk,

Are you sure that the AttributeError is related to the given code?

Probably you need to assign sensor = chunk.sensors[0] at first.
Best regards,
Alexey Pasumansky,
Agisoft LLC

n@sk

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Re: Load a calibration file - precalibrated project
« Reply #5 on: May 14, 2015, 11:24:08 AM »
Hello Alexey,

thank you for your response.

Yes, I tried the command line to make sure it is
and
Yes I need to assign!! I thought I could get access to the sensor without...

cheers