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python: 'cv2.' -> 'cv.' via 'import cv2 as cv'

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Alexander Alekhin
2017-12-11 12:55:03 +03:00
parent 9665dde678
commit 5560db73bf
162 changed files with 2083 additions and 2084 deletions
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doc/py_tutorials/py_photo/py_hdr/py_hdr.markdown
+12 -12
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@@ -53,12 +53,12 @@ Pay attention for the data types, as the images should be 1-channel or 3-channel
8-bit (np.uint8) and the exposure times need to be float32 and in seconds.
@code{.py}
import cv2
import cv2 as cv
import numpy as np
# Loading exposure images into a list
img_fn = ["img0.jpg", "img1.jpg", "img2.jpg", "img3.jpg"]
img_list = [cv2.imread(fn) for fn in img_fn]
img_list = [cv.imread(fn) for fn in img_fn]
exposure_times = np.array([15.0, 2.5, 0.25, 0.0333], dtype=np.float32)
@endcode
@@ -71,9 +71,9 @@ full dynamic range of all exposure images.
@code{.py}
# Merge exposures to HDR image
merge_debvec = cv2.createMergeDebevec()
merge_debvec = cv.createMergeDebevec()
hdr_debvec = merge_debvec.process(img_list, times=exposure_times.copy())
merge_robertson = cv2.createMergeRobertson()
merge_robertson = cv.createMergeRobertson()
hdr_robertson = merge_robertson.process(img_list, times=exposure_times.copy())
@endcode
@@ -85,9 +85,9 @@ we will later have to clip the data in order to avoid overflow.
@code{.py}
# Tonemap HDR image
tonemap1 = cv2.createTonemapDurand(gamma=2.2)
tonemap1 = cv.createTonemapDurand(gamma=2.2)
res_debvec = tonemap1.process(hdr_debvec.copy())
tonemap2 = cv2.createTonemapDurand(gamma=1.3)
tonemap2 = cv.createTonemapDurand(gamma=1.3)
res_robertson = tonemap2.process(hdr_robertson.copy())
@endcode
@@ -100,7 +100,7 @@ range of [0..1].
@code{.py}
# Exposure fusion using Mertens
merge_mertens = cv2.createMergeMertens()
merge_mertens = cv.createMergeMertens()
res_mertens = merge_mertens.process(img_list)
@endcode
@@ -115,9 +115,9 @@ res_debvec_8bit = np.clip(res_debvec*255, 0, 255).astype('uint8')
res_robertson_8bit = np.clip(res_robertson*255, 0, 255).astype('uint8')
res_mertens_8bit = np.clip(res_mertens*255, 0, 255).astype('uint8')
cv2.imwrite("ldr_debvec.jpg", res_debvec_8bit)
cv2.imwrite("ldr_robertson.jpg", res_robertson_8bit)
cv2.imwrite("fusion_mertens.jpg", res_mertens_8bit)
cv.imwrite("ldr_debvec.jpg", res_debvec_8bit)
cv.imwrite("ldr_robertson.jpg", res_robertson_8bit)
cv.imwrite("fusion_mertens.jpg", res_mertens_8bit)
@endcode
Results
@@ -150,10 +150,10 @@ function and use it for the HDR merge.
@code{.py}
# Estimate camera response function (CRF)
cal_debvec = cv2.createCalibrateDebevec()
cal_debvec = cv.createCalibrateDebevec()
crf_debvec = cal_debvec.process(img_list, times=exposure_times)
hdr_debvec = merge_debvec.process(img_list, times=exposure_times.copy(), response=crf_debvec.copy())
cal_robertson = cv2.createCalibrateRobertson()
cal_robertson = cv.createCalibrateRobertson()
crf_robertson = cal_robertson.process(img_list, times=exposure_times)
hdr_robertson = merge_robertson.process(img_list, times=exposure_times.copy(), response=crf_robertson.copy())
@endcode