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text: fix valgrind errors, minor changes

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This commit is contained in:
Alexander Alekhin
2016-11-25 16:46:56 +03:00
parent afd8a833c2
commit 590dc2986d
2 changed files with 18 additions and 25 deletions
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11
modules/text/samples/detect_er_chars.py
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@@ -5,7 +5,6 @@ import os
import cv2
import numpy as np
from matplotlib import pyplot as plt
print('\ndetect_er_chars.py')
print(' A simple demo script using the Extremal Region Filter algorithm described in:')
@@ -32,8 +31,8 @@ regions = cv2.text.detectRegions(gray,er1,er2)
#Visualization
rects = [cv2.boundingRect(p.reshape(-1, 1, 2)) for p in regions]
for rect in rects:
cv2.rectangle(img, rect[0:2], (rect[0]+rect[2],rect[1]+rect[3]), (0, 0, 255), 2)
img = img[:,:,::-1] #flip the colors dimension from BGR to RGB
plt.imshow(img)
plt.xticks([]), plt.yticks([]) # to hide tick values on X and Y axis
plt.show()
cv2.rectangle(img, rect[0:2], (rect[0]+rect[2],rect[1]+rect[3]), (0, 0, 0), 2)
for rect in rects:
cv2.rectangle(img, rect[0:2], (rect[0]+rect[2],rect[1]+rect[3]), (255, 255, 255), 1)
cv2.imshow("Text detection result", img)
cv2.waitKey(0)