mirror of
https://github.com/opencv/opencv.git
synced 2024-12-21 05:28:01 +08:00
191 lines
6.8 KiB
Python
191 lines
6.8 KiB
Python
|
#!/usr/bin/env python
|
||
|
|
'''
|
||
|
|
This program demonstrates OpenCV drawing and text output functions by drawing different shapes and text strings
|
||
|
|
Usage :
|
||
|
|
python3 drawing.py
|
||
|
|
Press any button to exit
|
||
|
|
'''
|
||
|
|
|
||
|
|
# Python 2/3 compatibility
|
||
|
|
from __future__ import print_function
|
||
|
|
|
||
|
|
import numpy as np
|
||
|
|
import cv2 as cv
|
||
|
|
|
||
|
|
# Drawing Lines
|
||
|
|
def lines():
|
||
|
|
for i in range(NUMBER*2):
|
||
|
|
pt1, pt2 = [], []
|
||
|
|
pt1.append(np.random.randint(x1, x2))
|
||
|
|
pt1.append(np.random.randint(y1, y2))
|
||
|
|
pt2.append(np.random.randint(x1, x2))
|
||
|
|
pt2.append(np.random.randint(y1, y2))
|
||
|
|
color = "%06x" % np.random.randint(0, 0xFFFFFF)
|
||
|
|
color = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
|
||
|
|
arrowed = np.random.randint(0, 6)
|
||
|
|
if (arrowed<3):
|
||
|
|
cv.line(image, tuple(pt1), tuple(pt2), color, np.random.randint(1, 10), lineType)
|
||
|
|
else:
|
||
|
|
cv.arrowedLine(image, tuple(pt1), tuple(pt2), color, np.random.randint(1, 10), lineType)
|
||
|
|
cv.imshow(wndname, image)
|
||
|
|
if cv.waitKey(DELAY)>=0:
|
||
|
|
return
|
||
|
|
|
||
|
|
# Drawing Rectangle
|
||
|
|
def rectangle():
|
||
|
|
for i in range(NUMBER*2):
|
||
|
|
pt1, pt2 = [], []
|
||
|
|
pt1.append(np.random.randint(x1, x2))
|
||
|
|
pt1.append(np.random.randint(y1, y2))
|
||
|
|
pt2.append(np.random.randint(x1, x2))
|
||
|
|
pt2.append(np.random.randint(y1, y2))
|
||
|
|
color = "%06x" % np.random.randint(0, 0xFFFFFF)
|
||
|
|
color = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
|
||
|
|
thickness = np.random.randint(-3, 10)
|
||
|
|
marker = np.random.randint(0, 10)
|
||
|
|
marker_size = np.random.randint(30, 80)
|
||
|
|
|
||
|
|
if (marker > 5):
|
||
|
|
cv.rectangle(image, tuple(pt1), tuple(pt2), color, max(thickness, -1), lineType)
|
||
|
|
else:
|
||
|
|
cv.drawMarker(image, tuple(pt1), color, marker, marker_size)
|
||
|
|
cv.imshow(wndname, image)
|
||
|
|
if cv.waitKey(DELAY)>=0:
|
||
|
|
return
|
||
|
|
|
||
|
|
# Drawing ellipse
|
||
|
|
def ellipse():
|
||
|
|
for i in range(NUMBER*2):
|
||
|
|
center = []
|
||
|
|
center.append(np.random.randint(x1, x2))
|
||
|
|
center.append(np.random.randint(x1, x2))
|
||
|
|
axes = []
|
||
|
|
axes.append(np.random.randint(0, 200))
|
||
|
|
axes.append(np.random.randint(0, 200))
|
||
|
|
angle = np.random.randint(0, 180)
|
||
|
|
color = "%06x" % np.random.randint(0, 0xFFFFFF)
|
||
|
|
color = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
|
||
|
|
thickness = np.random.randint(-1, 9)
|
||
|
|
cv.ellipse(image, tuple(center), tuple(axes), angle, angle-100, angle + 200, color, thickness, lineType)
|
||
|
|
cv.imshow(wndname, image)
|
||
|
|
if cv.waitKey(DELAY)>=0:
|
||
|
|
return
|
||
|
|
|
||
|
|
# Drawing Polygonal Curves
|
||
|
|
def polygonal():
|
||
|
|
for i in range(NUMBER):
|
||
|
|
pt = [(0, 0)]*6
|
||
|
|
pt = np.resize(pt, (2, 3, 2))
|
||
|
|
pt[0][0][0] = np.random.randint(x1, x2)
|
||
|
|
pt[0][0][1] = np.random.randint(y1, y2)
|
||
|
|
pt[0][1][0] = np.random.randint(x1, x2)
|
||
|
|
pt[0][1][1] = np.random.randint(y1, y2)
|
||
|
|
pt[0][2][0] = np.random.randint(x1, x2)
|
||
|
|
pt[0][2][1] = np.random.randint(y1, y2)
|
||
|
|
pt[1][0][0] = np.random.randint(x1, x2)
|
||
|
|
pt[1][0][1] = np.random.randint(y1, y2)
|
||
|
|
pt[1][1][0] = np.random.randint(x1, x2)
|
||
|
|
pt[1][1][1] = np.random.randint(y1, y2)
|
||
|
|
pt[1][2][0] = np.random.randint(x1, x2)
|
||
|
|
pt[1][2][1] = np.random.randint(y1, y2)
|
||
|
|
color = "%06x" % np.random.randint(0, 0xFFFFFF)
|
||
|
|
color = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
|
||
|
|
alist = []
|
||
|
|
for k in pt[0]:
|
||
|
|
alist.append(k)
|
||
|
|
for k in pt[1]:
|
||
|
|
alist.append(k)
|
||
|
|
ppt = np.array(alist)
|
||
|
|
cv.polylines(image, [ppt], True, color, thickness = np.random.randint(1, 10), lineType = lineType)
|
||
|
|
cv.imshow(wndname, image)
|
||
|
|
if cv.waitKey(DELAY) >= 0:
|
||
|
|
return
|
||
|
|
|
||
|
|
# fills an area bounded by several polygonal contours
|
||
|
|
def fill():
|
||
|
|
for i in range(NUMBER):
|
||
|
|
pt = [(0, 0)]*6
|
||
|
|
pt = np.resize(pt, (2, 3, 2))
|
||
|
|
pt[0][0][0] = np.random.randint(x1, x2)
|
||
|
|
pt[0][0][1] = np.random.randint(y1, y2)
|
||
|
|
pt[0][1][0] = np.random.randint(x1, x2)
|
||
|
|
pt[0][1][1] = np.random.randint(y1, y2)
|
||
|
|
pt[0][2][0] = np.random.randint(x1, x2)
|
||
|
|
pt[0][2][1] = np.random.randint(y1, y2)
|
||
|
|
pt[1][0][0] = np.random.randint(x1, x2)
|
||
|
|
pt[1][0][1] = np.random.randint(y1, y2)
|
||
|
|
pt[1][1][0] = np.random.randint(x1, x2)
|
||
|
|
pt[1][1][1] = np.random.randint(y1, y2)
|
||
|
|
pt[1][2][0] = np.random.randint(x1, x2)
|
||
|
|
pt[1][2][1] = np.random.randint(y1, y2)
|
||
|
|
color = "%06x" % np.random.randint(0, 0xFFFFFF)
|
||
|
|
color = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
|
||
|
|
alist = []
|
||
|
|
for k in pt[0]:
|
||
|
|
alist.append(k)
|
||
|
|
for k in pt[1]:
|
||
|
|
alist.append(k)
|
||
|
|
ppt = np.array(alist)
|
||
|
|
cv.fillPoly(image, [ppt], color, lineType)
|
||
|
|
cv.imshow(wndname, image)
|
||
|
|
if cv.waitKey(DELAY) >= 0:
|
||
|
|
return
|
||
|
|
|
||
|
|
# Drawing Circles
|
||
|
|
def circles():
|
||
|
|
for i in range(NUMBER):
|
||
|
|
center = []
|
||
|
|
center.append(np.random.randint(x1, x2))
|
||
|
|
center.append(np.random.randint(x1, x2))
|
||
|
|
color = "%06x" % np.random.randint(0, 0xFFFFFF)
|
||
|
|
color = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
|
||
|
|
cv.circle(image, tuple(center), np.random.randint(0, 300), color, np.random.randint(-1, 9), lineType)
|
||
|
|
cv.imshow(wndname, image)
|
||
|
|
if cv.waitKey(DELAY) >= 0:
|
||
|
|
return
|
||
|
|
|
||
|
|
# Draws a text string
|
||
|
|
def string():
|
||
|
|
for i in range(NUMBER):
|
||
|
|
org = []
|
||
|
|
org.append(np.random.randint(x1, x2))
|
||
|
|
org.append(np.random.randint(x1, x2))
|
||
|
|
color = "%06x" % np.random.randint(0, 0xFFFFFF)
|
||
|
|
color = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
|
||
|
|
cv.putText(image, "Testing text rendering", tuple(org), np.random.randint(0, 8), np.random.randint(0, 100)*0.05+0.1, color, np.random.randint(1, 10), lineType)
|
||
|
|
cv.imshow(wndname, image)
|
||
|
|
if cv.waitKey(DELAY) >= 0:
|
||
|
|
return
|
||
|
|
|
||
|
|
|
||
|
|
def string1():
|
||
|
|
textsize = cv.getTextSize("OpenCV forever!", cv.FONT_HERSHEY_COMPLEX, 3, 5)
|
||
|
|
org = (int((width - textsize[0][0])/2), int((height - textsize[0][1])/2))
|
||
|
|
for i in range(0, 255, 2):
|
||
|
|
image2 = np.array(image) - i
|
||
|
|
cv.putText(image2, "OpenCV forever!", org, cv.FONT_HERSHEY_COMPLEX, 3, (i, i, 255), 5, lineType)
|
||
|
|
cv.imshow(wndname, image2)
|
||
|
|
if cv.waitKey(DELAY) >= 0:
|
||
|
|
return
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
print(__doc__)
|
||
|
|
wndname = "Drawing Demo"
|
||
|
|
NUMBER = 100
|
||
|
|
DELAY = 5
|
||
|
|
width, height = 1000, 700
|
||
|
|
lineType = cv.LINE_AA # change it to LINE_8 to see non-antialiased graphics
|
||
|
|
x1, x2, y1, y2 = -width/2, width*3/2, -height/2, height*3/2
|
||
|
|
image = np.zeros((height, width, 3), dtype = np.uint8)
|
||
|
|
cv.imshow(wndname, image)
|
||
|
|
cv.waitKey(DELAY)
|
||
|
|
lines()
|
||
|
|
rectangle()
|
||
|
|
ellipse()
|
||
|
|
polygonal()
|
||
|
|
fill()
|
||
|
|
circles()
|
||
|
|
string()
|
||
|
|
string1()
|
||
|
|
cv.waitKey(0)
|
||
|
|
cv.destroyAllWindows()
|