def test_save_calibrations():
"""
Test save_calibrations.
Loading calibs was already tested above, so can rely on it.
CSV FORMAT
- delimiter: ', '
- no floats, round and convert to int using known precision
- strings in double quotes
e.g. "varname", var[0], var[1], ...\\n
"""
fn_cp = calibsdir + '/camera_params.csv'
if not os_exists(fn_cp):
raise RuntimeError('tests/camera_params.csv could not be found')
# set not to tests/ (`load_calibrations` will do that)
# don't want to overwrite test data
calib1 = CalibratePSEye()
calib1.init_chessboard(p, o)
try:
# Load known calibs and then save
cp = calib1.calibpath
debug('%s' % calib1.calibpath)
calib1.load_calibrations(fn_cp)
calib1.calibpath = cp
calib1.save_calibrations()
if not os_exists(calib1.calibpath):
raise RuntimeError('Failed to create calib path \'%s\''
% calib1.calib_path)
# Compare saving
with open(fn_cp, 'r') as f:
f1 = f.read()
with open(cp+'/camera_params.csv', 'r') as f:
f2 = f.read()
if f1 != f2:
raise RuntimeError('Camera parameter csvs did not match')
# Compare loading
calib2 = CalibratePSEye()
calib2.load_calibrations(calib1.calibpath+'/camera_params.csv')
paramlist = ('cameraMatrix', 'distCoeffs')
for k in paramlist:
k1 = getattr(calib1, k)
k2 = getattr(calib2, k)
if not array_equal(k1, k2):
raise RuntimeError(
'param \'%s\' does not match between calib1 and calib2' % k
)
debug('\'%s\' matched' % k)
finally:
calib1.removepath()
def test_internal_correct_and_save():
"""
Test internal correction saving method.
"""
calib = CalibratePSEye()
fn_c = calibsdir + '/camera_params.csv'
# Asserts
for t in (int, float, complex, list, tuple, range, dict, set,
frozenset, bool, bytes, bytearray, memoryview):
try:
calib.correct_and_save(t)
except TypeError:
pass
else:
raise RuntimeError('Failed to catch %s imgpath' % t.__name__)
calib.load_calibrations(fn_c)
cp = calib.calibpath
calib.calibpath = None
try:
calib.correct_and_save('file-that-does-not-exist')
except RuntimeError:
pass
else:
raise RuntimeError('Failed to catch _calib_path is None')
# Saving
calib.calibpath = cp
imgpath = testdir + '/raw'
storeddir = testdir + '/00000000-000000_undistorted'
storedcp = testdir + '/00000000-000000_camera_params.csv'
if os_exists(storeddir):
rmtree(storeddir)
if os_exists(storedcp):
os_remove(storedcp)
ud1 = calib.correct_and_save(imgpath)
try:
# Proper saving
if not os_exists(storeddir) or not os_exists(storedcp):
raise RuntimeError('Error creating corrected directories')
imgcount1 = len([f for f in listdir(imgpath) if f[-4:].lower() == '.jpg'])
imgcount2 = len([f for f in listdir(storeddir) if f[-4:].lower() == '.jpg'])
if imgcount1 != imgcount2:
raise RuntimeError('Not all images were saved')
# Correct calibration
# Check pre-save equality
imglist = [f for f in listdir(imgpath) if f[-4:].lower() == '.jpg']
rawimg = [cv_imread(imgpath + '/' + f) for f in imglist]
ud2 = calib.correct(rawimg) # will know if `correct` works
if not array_equal(ud1, ud2):
raise RuntimeError('Failed pre-save equality check')
# Check post-save equality
for i in range(len(imglist)):
fnud = storeddir + ('/_f%s' % str(i+1).zfill(5)) + '.jpg'
cv_imwrite(fnud, ud2[i,...], (IMWRITE_JPEG_QUALITY, 100))
ud1list = [cv_imread(storeddir + '/' + f) for f in imglist]
ud2list = [cv_imread(storeddir + '/_' + f) for f in imglist]
ud1reload = asarray(ud1list, dtype='uint8')
ud2reload = asarray(ud2list, dtype='uint8')
if not array_equal(ud1reload, ud2reload):
raise RuntimeError('Failed reload equality check')
finally:
os_remove(storedcp)
rmtree(storeddir)
try:
if os_exists(storedcp):
raise RuntimeError('failed to deleted cameraParams csv')
if os_exists(storeddir):
raise RuntimeError('failed to remove undistored img dir')
except AssertionError:
raise RuntimeError('Exception during test cleanup')