CALIBRATION error

[HollisJoe]

Hi, I use the TEST_IMAGE and use openMVG detections, but the CALIBRATION output this: 4 0000 /home/holy/source/com-InteriorModeling/LineSFMTestData/origin/0000.png 0001 /home/holy/source/com-InteriorModeling/LineSFMTestData/origin/0001.png 0002 /home/holy/source/com-InteriorModeling/LineSFMTestData/origin/0002.png 0003 /home/holy/source/com-InteriorModeling/LineSFMTestData/origin/0003.png reading intrinsic parameters reading global poses computing relative poses LOAD DETECTIONS AND MATCHES COMPUTE POSES PROCESSED IN 3.84876 images 0 and 1 Error in rotation : 120 Error in translation : nan images 1 and 2 Error in rotation : 120 Error in translation : nan images 2 and 3 Error in rotation : 120 Error in translation : nan AVERAGE RESULTS: Rotation: 120 Translation: nan

What this Error?

[HollisJoe]

The OpenMVG I use this: OPENMVG_SFM_BIN = "/home/holy/source/com-InteriorModeling/openMVG-1.3/build-src-Desktop-Default/Linux-x86_64-Release"

Indicate the openMVG camera sensor width directory

CAMERA_SENSOR_WIDTH_DIRECTORY = "/home/holy/source/com-InteriorModeling/openMVG-1.3/src/software/SfM" + "/../../openMVG/exif/sensor_width_database"

import os import subprocess import sys

if len(sys.argv) < 3: print ("Usage %s image_dir output_dir" % sys.argv[0]) sys.exit(1)

input_dir = sys.argv[1] output_dir = sys.argv[2] matches_dir = os.path.join(output_dir, "matches") reconstruction_dir = os.path.join(output_dir, "reconstruction_sequential") camera_file_params = os.path.join(CAMERA_SENSOR_WIDTH_DIRECTORY, "sensor_width_camera_database.txt")

print ("Using input dir : ", input_dir) print (" output_dir : ", output_dir)

Create the ouput/matches folder if not present

if not os.path.exists(output_dir): os.mkdir(output_dir) if not os.path.exists(matches_dir): os.mkdir(matches_dir)

print ("1. Intrinsics analysis") pIntrisics = subprocess.Popen( [os.path.join(OPENMVG_SFM_BIN, "openMVG_main_SfMInit_ImageListing"), "-i", input_dir, "-o", matches_dir, "-d", camera_file_params, "-k", "2760;0;1536;0;2760;1024;0;0;1"] ) pIntrisics.wait()

print ("2. Compute features") pFeatures = subprocess.Popen( [os.path.join(OPENMVG_SFM_BIN, "openMVG_main_ComputeFeatures"), "-i", matches_dir+"/sfm_data.json", "-o", matches_dir, "-m", "AKAZE_FLOAT"] ) pFeatures.wait()

print ("3. Compute matches") pMatches = subprocess.Popen( [os.path.join(OPENMVG_SFM_BIN, "openMVG_main_ComputeMatches"), "-i", matches_dir+"/sfm_data.json", "-o", matches_dir] ) pMatches.wait()

[ySalaun]

Hi,

Just to be sure:

• have you also run line_matching ? Did it give you good results ?
• about openMVG, do you have a file called matches.putative.txt in a subfolder called openMVG ? May be you have obtained the good file but did not put it in the good folder ?

I don't really think of other issues but reply me if you still have an issue (be quick though, I am on holidays in 8 hours for a week)

Best,

Yohann

[HollisJoe]

Thanks! que 1. I run line_matching,get the results: que 2. I give the matches.putative.txt and put it in the good folder:

[ySalaun]

I'm not sure to undertand. Did it work ? You're still having an issue ?

[HollisJoe]

Thanks! It still having an issue!

[ySalaun]

It seems that you've put all the files (pictures, K.txt, camera ground truth ...) in a folder and the results in a subfolder called outPut. I am not sure that my code can handle these two different folders and I think you need to put all the files in the folder origin. Also note that the calibration might have worked well and the code just did not find the ground truth calibration files and this is why the error is nan and 120.

Best,

Yohann

[HollisJoe]

Thanks! Ii's Worked!