mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
134 lines
6.3 KiB
134 lines
6.3 KiB
#!/usr/bin/env python |
|
|
|
"""gen_pattern.py |
|
Usage example: |
|
python gen_pattern.py -o out.svg -r 11 -c 8 -T circles -s 20.0 -R 5.0 -u mm -w 216 -h 279 |
|
-o, --output - output file (default out.svg) |
|
-r, --rows - pattern rows (default 11) |
|
-c, --columns - pattern columns (default 8) |
|
-T, --type - type of pattern, circles, acircles, checkerboard (default circles) |
|
-s, --square_size - size of squares in pattern (default 20.0) |
|
-R, --radius_rate - circles_radius = square_size/radius_rate (default 5.0) |
|
-u, --units - mm, inches, px, m (default mm) |
|
-w, --page_width - page width in units (default 216) |
|
-h, --page_height - page height in units (default 279) |
|
-a, --page_size - page size (default A4), supersedes -h -w arguments |
|
-H, --help - show help |
|
""" |
|
|
|
import argparse |
|
|
|
from svgfig import * |
|
|
|
|
|
class PatternMaker: |
|
def __init__(self, cols, rows, output, units, square_size, radius_rate, page_width, page_height): |
|
self.cols = cols |
|
self.rows = rows |
|
self.output = output |
|
self.units = units |
|
self.square_size = square_size |
|
self.radius_rate = radius_rate |
|
self.width = page_width |
|
self.height = page_height |
|
self.g = SVG("g") # the svg group container |
|
|
|
def make_circles_pattern(self): |
|
spacing = self.square_size |
|
r = spacing / self.radius_rate |
|
pattern_width = ((self.cols - 1.0) * spacing) + (2.0 * r) |
|
pattern_height = ((self.rows - 1.0) * spacing) + (2.0 * r) |
|
x_spacing = (self.width - pattern_width) / 2.0 |
|
y_spacing = (self.height - pattern_height) / 2.0 |
|
for x in range(0, self.cols): |
|
for y in range(0, self.rows): |
|
dot = SVG("circle", cx=(x * spacing) + x_spacing + r, |
|
cy=(y * spacing) + y_spacing + r, r=r, fill="black", stroke="none") |
|
self.g.append(dot) |
|
|
|
def make_acircles_pattern(self): |
|
spacing = self.square_size |
|
r = spacing / self.radius_rate |
|
pattern_width = ((self.cols-1.0) * 2 * spacing) + spacing + (2.0 * r) |
|
pattern_height = ((self.rows-1.0) * spacing) + (2.0 * r) |
|
x_spacing = (self.width - pattern_width) / 2.0 |
|
y_spacing = (self.height - pattern_height) / 2.0 |
|
for x in range(0, self.cols): |
|
for y in range(0, self.rows): |
|
dot = SVG("circle", cx=(2 * x * spacing) + (y % 2)*spacing + x_spacing + r, |
|
cy=(y * spacing) + y_spacing + r, r=r, fill="black", stroke="none") |
|
self.g.append(dot) |
|
|
|
def make_checkerboard_pattern(self): |
|
spacing = self.square_size |
|
xspacing = (self.width - self.cols * self.square_size) / 2.0 |
|
yspacing = (self.height - self.rows * self.square_size) / 2.0 |
|
for x in range(0, self.cols): |
|
for y in range(0, self.rows): |
|
if x % 2 == y % 2: |
|
square = SVG("rect", x=x * spacing + xspacing, y=y * spacing + yspacing, width=spacing, |
|
height=spacing, fill="black", stroke="none") |
|
self.g.append(square) |
|
|
|
def save(self): |
|
c = canvas(self.g, width="%d%s" % (self.width, self.units), height="%d%s" % (self.height, self.units), |
|
viewBox="0 0 %d %d" % (self.width, self.height)) |
|
c.save(self.output) |
|
|
|
|
|
def main(): |
|
# parse command line options |
|
parser = argparse.ArgumentParser(description="generate camera-calibration pattern", add_help=False) |
|
parser.add_argument("-H", "--help", help="show help", action="store_true", dest="show_help") |
|
parser.add_argument("-o", "--output", help="output file", default="out.svg", action="store", dest="output") |
|
parser.add_argument("-c", "--columns", help="pattern columns", default="8", action="store", dest="columns", |
|
type=int) |
|
parser.add_argument("-r", "--rows", help="pattern rows", default="11", action="store", dest="rows", type=int) |
|
parser.add_argument("-T", "--type", help="type of pattern", default="circles", action="store", dest="p_type", |
|
choices=["circles", "acircles", "checkerboard"]) |
|
parser.add_argument("-u", "--units", help="length unit", default="mm", action="store", dest="units", |
|
choices=["mm", "inches", "px", "m"]) |
|
parser.add_argument("-s", "--square_size", help="size of squares in pattern", default="20.0", action="store", |
|
dest="square_size", type=float) |
|
parser.add_argument("-R", "--radius_rate", help="circles_radius = square_size/radius_rate", default="5.0", |
|
action="store", dest="radius_rate", type=float) |
|
parser.add_argument("-w", "--page_width", help="page width in units", default=argparse.SUPPRESS, action="store", |
|
dest="page_width", type=float) |
|
parser.add_argument("-h", "--page_height", help="page height in units", default=argparse.SUPPRESS, action="store", |
|
dest="page_height", type=float) |
|
parser.add_argument("-a", "--page_size", help="page size, superseded if -h and -w are set", default="A4", action="store", |
|
dest="page_size", choices=["A0", "A1", "A2", "A3", "A4", "A5"]) |
|
args = parser.parse_args() |
|
|
|
show_help = args.show_help |
|
if show_help: |
|
parser.print_help() |
|
return |
|
output = args.output |
|
columns = args.columns |
|
rows = args.rows |
|
p_type = args.p_type |
|
units = args.units |
|
square_size = args.square_size |
|
radius_rate = args.radius_rate |
|
if 'page_width' and 'page_height' in args: |
|
page_width = args.page_width |
|
page_height = args.page_height |
|
else: |
|
page_size = args.page_size |
|
# page size dict (ISO standard, mm) for easy lookup. format - size: [width, height] |
|
page_sizes = {"A0": [840, 1188], "A1": [594, 840], "A2": [420, 594], "A3": [297, 420], "A4": [210, 297], |
|
"A5": [148, 210]} |
|
page_width = page_sizes[page_size][0] |
|
page_height = page_sizes[page_size][1] |
|
pm = PatternMaker(columns, rows, output, units, square_size, radius_rate, page_width, page_height) |
|
# dict for easy lookup of pattern type |
|
mp = {"circles": pm.make_circles_pattern, "acircles": pm.make_acircles_pattern, |
|
"checkerboard": pm.make_checkerboard_pattern} |
|
mp[p_type]() |
|
# this should save pattern to output |
|
pm.save() |
|
|
|
|
|
if __name__ == "__main__": |
|
main()
|
|
|