animation/fourcell/template.py

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import sys
import cv2
import numpy as np
import math
from os.path import exists, basename
from common import image_resize, display, normalize_angle, read_json
from json import dumps
DEBUG = True
registrationMarkThreshold = 0.65
#clockwise from top left
order = [ 0, 2, 3, 5, 4, 1 ]
matchMethods = ['cv2.TM_CCOEFF', 'cv2.TM_CCOEFF_NORMED', 'cv2.TM_CCORR', 'cv2.TM_CCORR_NORMED', 'cv2.TM_SQDIFF', 'cv2.TM_SQDIFF_NORMED']
#
# CALIBRATE
#
if len(sys.argv) < 2:
print('Please provide path of normalized scan to build template from to')
exit(1)
normalImage = sys.argv[-1]
if not exists(normalImage) :
print('Normalized scan does not exist, please provide one that does')
exit(2)
normalText = normalImage + '.json'
if not exists(normalText) :
print('Corresponding normalized scan text does not exist, please generate one')
exit(3)
print(f'Building template from scan {basename(normalImage)}')
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registrationMark = cv2.imread('./registrationMark.png', 0)
w, h = registrationMark.shape[:2]
holePunches = read_json(normalText)
original = cv2.imread(normalImage)
img = original.copy()
height, width = img.shape[:2]
orientation = height > width
marks = []
if not orientation :
print(f'Scan is not in portrait mode, exiting...')
exit(3)
#print(holePunches)
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def get_distance(ref, point):
# print('ref: {} , point: {}'.format(ref, point))
x1, y1 = ref[0], ref[1]
x2, y2 = point[0], point[1]
return math.hypot(x2 - x1, y2 - y1)
def group_points(points):
groups = {}
groupnum = 0
while len(points) > 1:
groupnum += 1
key = str(groupnum)
groups[key] = []
ref = points.pop(0)
for i, point in enumerate(points):
d = get_distance(ref, point)
if d < 30:
groups[key].append(points[i])
points[i] = None
points = list(filter(lambda x: x is not None, points))
return list([[int(np.mean(list([x[0] for x in groups[arr]]))), int(np.mean(list([x[1] for x in groups[arr]])))] for arr in groups])
def find_closest (pt, pts) :
return pts[min(range(len(pts)), key = lambda i: get_distance(pts[i], pt))]
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def find_in_half (half) :
halfGray = cv2.cvtColor(half, cv2.COLOR_BGR2GRAY)
res = cv2.matchTemplate(halfGray, registrationMark, cv2.TM_CCOEFF_NORMED)
threshold = registrationMarkThreshold
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loc = np.where( res >= threshold)
for pt in zip(*loc[::-1]):
cv2.rectangle(half, pt, (pt[0] + w, pt[1] + h), (0,0,255), 2)
return list(zip(*loc[::-1]))
ttly = holePunches['0']['y']-round(height*0.05)
ttlx = holePunches['0']['x']
topHalf = img[ttly:holePunches['1']['y']+round(height*0.1), ttlx:holePunches['2']['x']]
while True:
topHalfPts = find_in_half(topHalf)
if len(topHalfPts) < 12 :
registrationMarkThreshold -= 0.05
print(f'Found only {len(topHalfPts)}, decreasing threshold to {registrationMarkThreshold}')
elif len(topHalfPts) > 12 :
registrationMarkThreshold += 0.05
print(f'Found {len(topHalfPts)}, increasing threshold to {registrationMarkThreshold}')
else :
break
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thpts = group_points(topHalfPts)
for pt in thpts :
#print(f'{ttlx + pt[0]},{ttly + pt[1]}')
marks.append((ttlx + pt[0] + round(w / 2), ttly + pt[1] + round(h / 2),))
print(f'Found {len(thpts)} points')
#display(topHalf)
btly = holePunches['4']['y']-round(height*0.1)
btlx = holePunches['3']['x']
bottomHalf = img[btly:holePunches['5']['y']+round(height*0.05), btlx:holePunches['4']['x']]
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bottomHalfPts = find_in_half(bottomHalf)
bhpts = group_points(bottomHalfPts)
for pt in bhpts :
#print(f'{btlx + pt[0]},{btly + pt[1]}')
marks.append((btlx + pt[0] + round(w / 2), btly + pt[1] + round(h / 2), ))
clean = original.copy()
for pt in marks :
#print(pt)
cv2.circle(clean, pt, 50, (0,0,255), -1)
print(f'Found {len(bhpts)} points')
if len(marks) != 16 :
print(f'{len(marks)} != 16 marks')
exit(1)
##
# TOP LEFT
##
topLeftTR = find_closest((0,0,), marks)
#print(topLeftTR)
topLeftSorted = sorted(marks, key=lambda e: get_distance(e, topLeftTR))
topLeftSorted.remove(topLeftTR)
if abs(topLeftSorted[0][1] - topLeftTR[1]) < abs(topLeftSorted[1][1] - topLeftTR[1]) :
topLeftBR = topLeftSorted[0]
else :
topLeftBR = topLeftSorted[1]
topLeftTL = topLeftSorted[2]
topLeftBL = topLeftSorted[4]
if DEBUG :
cv2.line(clean, topLeftTR, topLeftBR, (0,0,255,), 3)
cv2.line(clean, topLeftTR, topLeftTL, (0,0,255,), 3)
cv2.line(clean, topLeftBR, topLeftBL, (0,0,255,), 3)
cv2.line(clean, topLeftTL, topLeftBL, (0,0,255,), 3)
##
# TOP RIGHT
##
topRightTL = find_closest((width,0,), marks)
#print(topRightTL)
topRightSorted = sorted(topLeftSorted, key=lambda e: get_distance(e, topRightTL))
topRightSorted.remove(topRightTL)
topRightSorted.remove(topLeftBR)
topRightSorted.remove(topLeftTL)
topRightSorted.remove(topLeftBL)
topRightBL = topRightSorted[0]
topRightTR = topRightSorted[1]
if abs(topRightTL[0] - topRightSorted[2][0]) > abs(topRightTL[0] - topRightSorted[3][0]) :
topRightBR = topRightSorted[2]
else :
topRightBR = topRightSorted[3]
if DEBUG :
cv2.line(clean, topRightTR, topRightBR, (0,0,255,), 3)
cv2.line(clean, topRightTR, topRightTL, (0,0,255,), 3)
cv2.line(clean, topRightBR, topRightBL, (0,0,255,), 3)
cv2.line(clean, topRightTL, topRightBL, (0,0,255,), 3)
##
# BOTTOM LEFT
##
bottomLeftTL = find_closest((0,height,), marks)
bottomLeftSorted = sorted(topRightSorted, key=lambda e: get_distance(e, bottomLeftTL))
bottomLeftSorted.remove(bottomLeftTL)
bottomLeftSorted.remove(topRightBR)
bottomLeftSorted.remove(topRightTR)
bottomLeftSorted.remove(topRightBL)
bottomLeftBL = bottomLeftSorted[0]
bottomLeftTR = bottomLeftSorted[2]
bottomLeftBR = bottomLeftSorted[3]
if DEBUG :
cv2.line(clean, bottomLeftTR, bottomLeftBR, (0,0,255,), 3)
cv2.line(clean, bottomLeftTR, bottomLeftTL, (0,0,255,), 3)
cv2.line(clean, bottomLeftBR, bottomLeftBL, (0,0,255,), 3)
cv2.line(clean, bottomLeftTL, bottomLeftBL, (0,0,255,), 3)
##
# BOTTOM RIGHT
##
bottomRightTR = find_closest((width,height,), marks)
bottomRightSorted = sorted(bottomLeftSorted, key=lambda e: get_distance(e, bottomRightTR))
bottomRightSorted.remove(bottomRightTR)
bottomRightSorted.remove(bottomLeftBR)
bottomRightSorted.remove(bottomLeftTR)
bottomRightSorted.remove(bottomLeftBL)
bottomRightBR = bottomRightSorted[0]
bottomRightTL = bottomRightSorted[1]
bottomRightBL = bottomRightSorted[2]
if DEBUG :
cv2.line(clean, bottomRightTR, bottomRightBR, (0,0,255,), 3)
cv2.line(clean, bottomRightTR, bottomRightTL, (0,0,255,), 3)
cv2.line(clean, bottomRightBR, bottomRightBL, (0,0,255,), 3)
cv2.line(clean, bottomRightTL, bottomRightBL, (0,0,255,), 3)
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jsonOut = {
'width' : width,
'height' : height,
'holePunches' : holePunches,
'0' : {
'0' : {
'x' : bottomLeftTL[0],
'y' : bottomLeftTL[1]
},
'1' : {
'x' : bottomLeftTR[0],
'y' : bottomLeftTR[1]
},
'2' : {
'x' : bottomLeftBR[0],
'y' : bottomLeftBR[1]
},
'3' : {
'x' : bottomLeftBL[0],
'y' : bottomLeftBL[1]
}
},
'1' : {
'0' : {
'x' : topLeftTL[0],
'y' : topLeftTL[1]
},
'1' : {
'x' : topLeftTR[0],
'y' : topLeftTR[1]
},
'2' : {
'x' : topLeftBR[0],
'y' : topLeftBR[1]
},
'3' : {
'x' : topLeftBL[0],
'y' : topLeftBL[1]
}
},
'2' : {
'0' : {
'x' : topRightTL[0],
'y' : topRightTL[1]
},
'1' : {
'x' : topRightTR[0],
'y' : topRightTR[1]
},
'2' : {
'x' : topRightBR[0],
'y' : topRightBR[1]
},
'3' : {
'x' : topRightBL[0],
'y' : topRightBL[1]
}
},
'3' : {
'0' : {
'x' : bottomRightTL[0],
'y' : bottomRightTL[1]
},
'1' : {
'x' : bottomRightTR[0],
'y' : bottomRightTR[1]
},
'2' : {
'x' : bottomRightBR[0],
'y' : bottomRightBR[1]
},
'3' : {
'x' : bottomRightBL[0],
'y' : bottomRightBL[1]
}
}
}
templateFile = f'{normalImage}.template.json'
with open(calibrationFile, 'w') as output:
output.write(dumps(jsonOut, sort_keys = True, indent = 4))
print(f'Wrote template file to {templateFile}')
display(clean)