def AddSegment(xm, color):
xl = tl.findb0(horp, xm, 0.7 * horp[xm])
xr = tl.findb1(horp, xm, 0.7 * horp[xm])
horp[xl:xr] = 0
if len(verticalSegments) > 0:
if np.isclose(xm, verticalSegments, atol=15).any():
return
verticalSegments.append(xm)
cv2.line(imgBand, (xm, 0), (xm, imgBand.shape[0]), color, 1)
cv2.line(bright, (xm, 0), (xm, bright.shape[0]), (0, 0, 255), 1)
cv2.line(equ, (xm, 0), (xm, equ.shape[0]), (0, 0, 255), 1)
cv2.line(thres, (xm, 0), (xm, thres.shape[0]), (0, 0, 255), 1)
cv2.line(_horpDr, (xm, 0), (xm, _horpDr.shape[0]), (0, 0, 255), 1)
def byGradient(img):
grad = getGradient(img, y=1, useGradient=True)
proj = np.sum(grad, axis=0) / 255
drawProj = tl.getDrawProjectionHor(img, proj)
y = img.shape[0]
#medVal = median(img, proj, drawProj)
#print medVal
bandP1ranges = []
peaks = []
height = drawProj.shape[0]
limit = int(np.max(proj) * 0.25)
while np.max(proj) > limit:
ybm = np.argmax(proj)
c1 = 0.2
c2 = 0.2
yb0 = tl.findb0(proj, ybm, c1 * proj[ybm])
yb1 = tl.findb1(proj, ybm, c2 * proj[ybm])
if yb1 - yb0 > 4:
bandP1ranges.append((yb0, yb1))
peaks.append((int(ybm), height - proj[ybm]))
proj[yb0:yb1] = 0
# draw peaks
#for peak in peaks:
#cv2.circle(drawProj, peak, 1, (0,0,255))
images = []
for band in bandP1ranges:
x1, x2 = band
crop = img[0:y, x1:x2]
#crop = cv2.resize(crop, (128, 128), 0, 0, cv2.INTER_LINEAR)
images.append(crop)
#print(crop)
#cv2.line(img, (x1, 0), (x1, 100), (0, 0, 255), 1)
#cv2.line(img, (x2, 0), (x2, 100), (0, 0, 255), 1)
return images
Plate segmentation
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
thres = cv2.adaptiveThreshold(gray, 255, cv2.ADAPTIVE_THRESH_MEAN_C, cv2.THRESH_BINARY, 11, 3)
horp = tl.projectionHor(thres)
_horpDr = tl.getDrawProjectionHor(gray, horp)
vm = np.max(horp)
va = np.mean(horp)
vb = 2*va-vm
verticalSegments = []
while True:
xm = np.argmax(horp)
if horp[xm] > 0.86 * vm:
xl = tl.findb0(horp, xm, 0.7 * horp[xm])
xr = tl.findb1(horp, xm, 0.7 * horp[xm])
horp[xl:xr] = 0
verticalSegments.append(xm)
cv2.line(imgBand,(xm,0),(xm,imgBand.shape[0]),(0,0,255),1)
else:
break
verticalSegments.append(0)
verticalSegments.append(imgBand.shape[1]-1)
verticalSegments = np.asarray(verticalSegments, dtype=np.int)
verticalSegments.sort()
# print verticalSegments
total, founded = dtl.getSegmentation1Accuracy(verticalSegments, maskCharBand)
indx = 1 if imagepath.find(categories[0]) != -1 else 0
kernel = medianHeight
verpConvolved = np.convolve(verp, np.ones((kernel, )) / kernel, mode='same')
drawedverpConvolved = tl.getDrawProjectionVer(vis, verpConvolved)
'''
Find peaks Band Clipping Phase 1
'''
bandP1ranges = []
peaks = []
c1 = 0.2
c2 = 0.4
while np.max(verpConvolved) > 10:
ybm = np.argmax(verpConvolved)
yb0 = tl.findb0(verpConvolved, ybm, c1 * verpConvolved[ybm])
yb1 = tl.findb1(verpConvolved, ybm, c2 * verpConvolved[ybm])
if yb1 - yb0 > medianHeight:
bandP1ranges.append((yb0, yb1))
peaks.append((int(verpConvolved[ybm]), ybm))
verpConvolved[yb0:yb1] = 0
# draw peaks
for peak in peaks:
cv2.circle(drawedverpConvolved, peak, 2, (0, 0, 255), -1)
# draw bands
bandsImg = np.zeros(vis.shape, dtype=np.uint8)
for band in bandP1ranges:
yt, yb = band