Last active
May 24, 2018 01:55
-
-
Save webstory/87d558bbeae114cec72eebc1a3d41b54 to your computer and use it in GitHub Desktop.
Affine transform with python opencv
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import pyproj | |
import cv2 | |
import numpy as np | |
import csv | |
EPSG5174 = pyproj.Proj("+proj=tmerc +lat_0=38 +lon_0=127.0028902777778 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +towgs84=-115.80,474.99,674.11,1.16,-2.31,-1.63,6.43 +units=m +no_defs") | |
EPSG5179 = pyproj.Proj("+proj=tmerc +lat_0=38 +lon_0=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs") # UTMK | |
EPSG5186 = pyproj.Proj("+proj=tmerc +lat_0=38 +lon_0=127 +k=1 +x_0=200000 +y_0=600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs") | |
fromarray = [] | |
toarray = [] | |
scale = 0.005 | |
links = ['uleungdo_links.csv', 'dokdo_links.csv'] | |
with open(links[1], mode='r', newline='') as f: | |
reader = csv.reader(f, delimiter=',') | |
for row in reader: | |
idx, x1, y1, x2, y2 = row | |
x1, y1 = pyproj.transform(EPSG5186, EPSG5179, x1, y1) | |
x2, y2 = pyproj.transform(EPSG5186, EPSG5179, x2, y2) | |
fromarray.append([float(x1), float(y1)]) | |
toarray.append([float(x2), float(y2)]) | |
# img = cv2.imread('input.jpg') | |
# rows, cols = img.shape[:2] | |
src_points = np.float32(fromarray) | |
dst_points = np.float32(toarray) | |
# affine_matrix, mask = cv2.findHomography(src_points, dst_points) | |
affine_matrix = cv2.getAffineTransform(src_points, dst_points) | |
print(affine_matrix) | |
# img_output = cv2.warpPerspective(img, affine_matrix, (cols, rows)) | |
# img_output = cv2.warpAffine(img, affine_matrix, (cols, rows)) | |
# cv2.imwrite('output.jpg', img_output) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
numpy==1.14.1 | |
opencv-python==3.4.0.12 | |
pkg-resources==0.0.0 | |
pyproj==1.9.5.1 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
virtualenv -p /usr/bin/python3 venv | |
source venv/bin/activate | |
pip install opencv-python numpy pyproj |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment