def draw_guides(self, cam_img):
if self.ADJUSTING:
saying = "Use Arrow Keys and Numbers (1-4) to adjust until warp is square"
for pnt, r, c, ln in zip(self.pts1, self.radii, self.colors, self.lines):
cv2.circle(cam_img, tuple(pnt), r, c, thickness=ln)
for line, (label, pnt, hue) in enumerate(zip(["p1", "p2", "p3", "p4"], self.pts1, self.colors)):
draw_str(cam_img, (10, 40 + (line * 15)), " =".join([label, str(tuple(pnt))]), color=hue)
else:
saying = "Press [a] to turn corner-adjustment on/off."
draw_str(cam_img, (20, 17), saying)
return cam_img
def show_card_info(self, texts, chalkboard, max_expansion=2.6, topleft=(5, 5)):
""" take a list of text lines and draw each so it fits in most of the width of the given image"""
startx, starty = topleft
max_x = chalkboard.shape[1] - startx * 2 # leaves margins
for txt in texts:
(sx, sy), baseline = cv2.getTextSize(txt, fontFace=cv2.FONT_HERSHEY_PLAIN, fontScale=1, thickness=2)
# baseline: straggling font-pixels extending below base of most letters, i.e. g p q
sy += baseline * 0.5
size_ratio = min(max_x / sx, max_expansion)
starty += (int(sy * size_ratio) + 2)
draw_str(chalkboard, (startx, starty), txt, font=cv2.FONT_HERSHEY_PLAIN, size=size_ratio, color=(0, 255, 0))
return chalkboard
def draw_guides(self, cam_img):
if self.ADJUSTING:
saying = "Use Arrow Keys and Numbers (1-4) to adjust until warp is square"
for pnt, r, c, ln in zip(self.pts1, self.radii, self.colors,
self.lines):
cv2.circle(cam_img, tuple(pnt), r, c, thickness=ln)
for line, (label, pnt, hue) in enumerate(
zip(["p1", "p2", "p3", "p4"], self.pts1, self.colors)):
draw_str(cam_img, (10, 40 + (line * 15)),
" =".join([label, str(tuple(pnt))]),
color=hue)
else:
saying = "Press [a] to turn corner-adjustment on/off."
draw_str(cam_img, (20, 17), saying)
return cam_img
def show_card_info(self,
texts,
chalkboard,
max_expansion=2.6,
topleft=(5, 5)):
""" take a list of text lines and draw each so it fits in most of the width of the given image"""
startx, starty = topleft
max_x = chalkboard.shape[1] - startx * 2 # leaves margins
for txt in texts:
(sx,
sy), baseline = cv2.getTextSize(txt,
fontFace=cv2.FONT_HERSHEY_PLAIN,
fontScale=1,
thickness=2)
# baseline: straggling font-pixels extending below base of most letters, i.e. g p q
sy += baseline * 0.5
size_ratio = min(max_x / sx, max_expansion)
starty += (int(sy * size_ratio) + 2)
draw_str(chalkboard, (startx, starty),
txt,
font=cv2.FONT_HERSHEY_PLAIN,
size=size_ratio,
color=(0, 255, 0))
return chalkboard
