def CheckIfIntersectingLineSegment(p1, p2, p3, p4):
tolerance = Constants.PRECISION
Pixeltolerance = 0.5
x1 = p1.x
x2 = p2.x
x3 = p3.x
x4 = p4.x
y1 = p1.y
y2 = p2.y
y3 = p3.y
y4 = p4.y
numeratorA = ((x4 - x3) * (y1 - y3)) - ((y4 - y3) * (x1 - x3))
numeratorB = ((x2 - x1) * (y1 - y3)) - ((y2 - y1) * (x1 - x3))
denominator = ((y4 - y3) * (x2 - x1)) - ((x4 - x3) * (y2 - y1))
if (MathUtils.EQTF(denominator, 0.0, tolerance)):
if (MathUtils.EQTF(numeratorB, 0.0, tolerance)
and MathUtils.EQTF(numeratorA, 0.0, tolerance)):
return Cognition.CheckForCoincidentLineSegments(p1, p2, p3, p4)
return False
ua = numeratorA / denominator
ub = numeratorB / denominator
if ((ua > (0.0 - Pixeltolerance)) and (ua < (1.0 + Pixeltolerance))
and (ub > (0.0 - Pixeltolerance))
and (ub < (1.0 + Pixeltolerance))):
return True
return False
def ProjectLineSegmentEnds(self):
projLineSegments = []
for ls in self._lineSegments:
lss = ls.startPoint
lse = ls.endPoint
lssp = MathUtils.ProjectToLine2(self._line.startPoint,
self._line.endPoint, lss)
lsep = MathUtils.ProjectToLine2(self._line.startPoint,
self._line.endPoint, lse)
lsp = Line2(lssp, lsep)
projLineSegments.append(lsp)
self._lineSegments = projLineSegments
def ArrowHeadDirection(Feature_Manager):
OriginalImg = Feature_Manager._ImageOriginal.copy()
OutputImg = OriginalImg.copy()
DimensionalLines = Feature_Manager._DetectedDimensionalLine
ArrowHeadsList = Feature_Manager._DetectedArrowHead
for dl in DimensionalLines:
for ah in dl._ArrowHeads:
p1 = ah._BoundingBoxP1
p2 = ah._BoundingBoxP2
TempImg = OriginalImg[p1.y:p2.y + 4, p1.x:p2.x + 4]
TempImg = ImgTransform.ImgAspectResize(TempImg, 100, 100)
cornerImg = TempImg.copy()
gray = cv2.cvtColor(TempImg, cv2.COLOR_BGR2GRAY)
corners = cv2.goodFeaturesToTrack(gray, 20, 0.09, 10, True)
corners = np.int0(corners)
cornerPts = []
xpts = []
ypts = []
for i in corners:
x, y = i.ravel()
p = Point2(x, y)
xpts.append(x)
ypts.append(y)
cornerPts.append(p)
cv2.circle(cornerImg, (x, y), 1, 255, -1)
xc = np.mean(xpts)
yc = np.mean(ypts)
c = Point2(xc, yc)
dictPt = {}
for i in cornerPts:
d = sqrt((c.x - i.x)**2 + (c.y - i.y)**2)
dictPt[i] = d
sortedDict = sorted(dictPt.items(), key=operator.itemgetter(1))
extremePt = sortedDict[len(sortedDict) - 1][0]
cv2.circle(cornerImg, (extremePt.x, extremePt.y), 3, 255, -1)
projectedPt = MathUtils.ProjectToLine2(
dl._Leaders[0].startPoint, dl._Leaders[0].endPoint,
extremePt)
projectedCorner = MathUtils.ProjectToLine2(
dl._Leaders[0].startPoint, dl._Leaders[0].endPoint, c)
Direction = Cognition.GetDirection(projectedPt,
projectedCorner)
ah._Direction = Direction
Cognition.AssignArrowHeadsDirection(ArrowHeadsList,
ah._ArrowCenter, Direction)
print(Direction)
def ProjectCorners(self):
corners = self._cornerPoints
projCorners = []
for cp in corners:
pcp = MathUtils.ProjectToLine2(self._line.startPoint,
self._line.endPoint, cp)
projCorners.append(pcp)
self._cornerPoints = projCorners
def OnLine(self, point):
s = self.startPoint
e = self.endPoint
dir = e - s
dir.Normalize()
d = MathUtils.Distance_PointToLine2(s, dir, point)
if (d <= 5):
return True
return False
def CheckIfOverlapLineSegments(Rect1_Segments, Rect2_Segments):
for i in Rect1_Segments:
p1 = i.startPoint
p2 = i.endPoint
for j in Rect2_Segments:
p3 = j.startPoint
p4 = j.endPoint
Intersects = MathUtils.Check_Intersects_LineSegmentLineSegment(
p1, p2, p3, p4)
if Intersects == True:
return True
return False
def SetEnds(self):
points = []
numCorners = len(self._cornerPoints)
if numCorners >= 1:
lsp1, lsp2 = SpecialLineSegments.SeggregatePoints(
self._lineSegments, self._line)
lsp1 = MathUtils.ProjectToLine2(self._line.startPoint,
self._line.endPoint, lsp1)
lsp2 = MathUtils.ProjectToLine2(self._line.startPoint,
self._line.endPoint, lsp2)
cs = self._cornerPoints[0]
ce = self._cornerPoints[numCorners - 1]
points.append(lsp1)
points.append(lsp2)
points.append(cs)
points.append(ce)
sortedEndPts = SpecialLineSegments.sortPoints(points, self._line)
numPts = len(sortedEndPts)
s = sortedEndPts[0]
e = sortedEndPts[numPts - 1]
line = Line2(s, e)
self._line = line
def getAngleBetweenLineAndAxis(p1, p2):
line = Line2(p1, p2)
up1 = Cognition.GetUParam(p1, line)
up2 = Cognition.GetUParam(p2, line)
if up2 > up1:
deltaY = p2.y - p1.y
deltaX = p2.x - p1.x
else:
deltaY = -p1.y - p2.y
deltaX = -p1.x - p2.x
radians = Cognition.angle_trunc(atan2(deltaY, deltaX))
degrees = MathUtils.RadToDeg(radians)
degrees = (360 - degrees)
return degrees
def GetNearestLineSegment(point, ls, lineSegments):
if lineSegments.Length == 0:
return None
nearestSegment = None
minDist = sys.float_info.max
nearestPoint = None
for l in lineSegments:
if Cognition.areSameLineSegments(l, ls):
continue
nearestPointDist, nearestPoint = MathUtils.MinDistance_PointToLineSegment(
l.startPoint, l.endPoint, point)
if minDist >= nearestPointDist:
nearestSegment = l
minDist = nearestPointDist
nearestPoint = nearestPoint
return nearestSegment, minDist, nearestPoint
def JoinLineSegmentsWithinProximityTolerance(Feature_Manager):
entityLineSegments = Feature_Manager._DetectedLine
PIXEL_TOLERANCE = 8
updatedLineSegments = []
lineSegments = Cognition.flattenLineSegmentLists(entityLineSegments)
for lsToExtend in lineSegments:
dir = lsToExtend.endPoint - lsToExtend.startPoint
dir = dir.Normalize()
start = lsToExtend.startPoint + (dir.Negate() * PIXEL_TOLERANCE)
end = lsToExtend.endPoint + (dir * PIXEL_TOLERANCE)
minDistanceStart = sys.float_info.max
minDistanceEnd = sys.float_info.max
startExtensionPoint = None
endExtensionPoint = None
for lsTemp in lineSegments:
if lsTemp == lsToExtend:
continue
result, intersection = MathUtils.Intersects_LineSegmentLineSegment(
lsTemp.startPoint, lsTemp.endPoint, start, end)
if result == False or intersection is None:
continue
dist = lsToExtend.startPoint.DistanceTo(intersection)
if dist < minDistanceStart and dist < PIXEL_TOLERANCE:
minDistanceStart = dist
startExtensionPoint = intersection
dist = lsToExtend.endPoint.DistanceTo(intersection)
if dist < minDistanceEnd and dist < PIXEL_TOLERANCE:
minDistanceEnd = dist
endExtensionPoint = intersection
if startExtensionPoint is not None and minDistanceStart <= PIXEL_TOLERANCE:
lsToExtend.startPoint = startExtensionPoint
if endExtensionPoint is not None and minDistanceEnd <= PIXEL_TOLERANCE:
lsToExtend.endPoint = endExtensionPoint
updatedLineSegments.append(lsToExtend)
Feature_Manager._DetectedLine = updatedLineSegments
def EntityCorrelation(Feature_Manager):
entityLines = Feature_Manager._DetectedLine
dimensions = Feature_Manager._DetectedDimension
EntitiesCorrelated = []
for d in dimensions:
CorrelatedLines = []
cE = CorrelatedEntity()
for a in d._DimensionalLines._ArrowHeads:
BB = Cognition.SortCoordinates(
[a._BoundingBoxP1, a._BoundingBoxP2])
bbMin = BB[0]
bbMax = BB[1]
direction = a._Direction
if direction == "West":
shortListedLines = []
for l in entityLines:
if bbMin.x + 3 > l.startPoint.x and fabs(
l.endPoint.x - l.startPoint.x) < 3 and fabs(
l.endPoint.y - l.startPoint.y) > 5:
shortListedLines.append(l)
for l in shortListedLines:
projectedPt = MathUtils.ProjectToLine2(
l.startPoint, l.endPoint, bbMin)
projectedDistance = bbMin.DistanceTo(projectedPt)
if projectedDistance < 8: #<7
CorrelatedLines.append(l)
elif direction == "East":
shortListedLines = []
for l in entityLines:
if bbMax.x - 3 < l.startPoint.x and fabs(
l.endPoint.x - l.startPoint.x) < 3 and fabs(
l.endPoint.y - l.startPoint.y) > 5:
shortListedLines.append(l)
for l in shortListedLines:
projectedPt = MathUtils.ProjectToLine2(
l.startPoint, l.endPoint, bbMax)
projectedDistance = bbMax.DistanceTo(projectedPt)
if projectedDistance < 8: #<7
CorrelatedLines.append(l)
elif direction == "North":
shortListedLines = []
for l in entityLines:
if bbMin.y + 3 > l.startPoint.y and fabs(
l.endPoint.y - l.startPoint.y) < 3 and fabs(
l.endPoint.x - l.startPoint.x) > 5:
shortListedLines.append(l)
for l in shortListedLines:
projectedPt = MathUtils.ProjectToLine2(
l.startPoint, l.endPoint, bbMin)
projectedDistance = bbMin.DistanceTo(projectedPt)
if projectedDistance < 8: #<7
CorrelatedLines.append(l)
elif direction == "South":
shortListedLines = []
for l in entityLines:
if bbMax.y - 3 < l.startPoint.y and fabs(
l.endPoint.y - l.startPoint.y) < 3 and fabs(
l.endPoint.x - l.startPoint.x) > 5:
shortListedLines.append(l)
for l in shortListedLines:
projectedPt = MathUtils.ProjectToLine2(
l.startPoint, l.endPoint, bbMax)
projectedDistance = bbMax.DistanceTo(projectedPt)
if projectedDistance < 8: #<7
CorrelatedLines.append(l)
cE.ExtractCorrelatedEntity(cE, d, CorrelatedLines)
EntitiesCorrelated.append(cE)
Feature_Manager._CorrelatedEntities = EntitiesCorrelated
def Detect(Feature_Manager):
lines = Feature_Manager._DetectedLine
dimension = Feature_Manager._DetectedDimension
supportLinesegments = []
entityLinesegments = []
dist_Img = Cognition.DistanceTransform(Feature_Manager._ImageCleaned)
minVal, maxVal, minLoc, maxLoc = cv2.minMaxLoc(dist_Img)
for l in lines:
for seg in l:
PointsBetweenLine = SpecialLineSegments.PixelScanner(
seg.startPoint, seg.endPoint, dist_Img)
sLinesPoints = []
eLinePoints = []
for i in PointsBetweenLine:
t = Cognition.CheckThicknessInVicinity(
i[0], i[1], dist_Img)
pt = Point2(i[0], i[1])
if t is None:
continue
if t <= 0.6 * maxVal:
sLinesPoints.append(pt)
else:
eLinePoints.append(pt)
sortSuppPts = sLinesPoints
sortEntPts = eLinePoints
if (len(sortSuppPts) > 1):
startsupportPt = sortSuppPts[0]
for i in range(0, len(sortSuppPts) - 1):
p1 = sortSuppPts[i]
p2 = sortSuppPts[i + 1]
dist = p1.DistanceTo(p2)
if dist > 30:
Supportlinesegment = Line2(startsupportPt, p1)
supportLinesegments.append(Supportlinesegment)
startsupportPt = p2
Supportlinesegment = Line2(startsupportPt, p2)
supportLinesegments.append(Supportlinesegment)
if (len(sortEntPts) > 1):
startentityPt = sortEntPts[0]
elines = []
for i in range(0, len(sortEntPts) - 1):
eline = []
p1 = sortEntPts[i]
p2 = sortEntPts[i + 1]
dist = p1.DistanceTo(p2)
if dist > 2:
entitylinesegment = Line2(startentityPt, p1)
eline.append(entitylinesegment)
entityLinesegments.append(eline)
startentityPt = p2
entitylinesegment = Line2(startentityPt, p2)
elines.append(entitylinesegment)
entityLinesegments.append(elines)
for d in dimension:
SupportL = []
for a in d._DimensionalLines._ArrowHeads:
BB = Cognition.SortCoordinates(
[a._BoundingBoxP1, a._BoundingBoxP2])
bbMin = BB[0]
bbMax = BB[1]
direction = a._Direction
if direction == "West":
shortListedLines = []
SupportLSW = []
for ls in supportLinesegments:
if bbMin.x + 3 > ls.startPoint.x and fabs(
ls.endPoint.x - ls.startPoint.x) < 3 and fabs(
ls.endPoint.y - ls.startPoint.y) > 5:
shortListedLines.append(ls)
for ls in shortListedLines:
projectedPt = MathUtils.ProjectToLine2(
ls.startPoint, ls.endPoint, bbMin)
projectedDistance = bbMin.DistanceTo(projectedPt)
if projectedDistance < 8: #<7
SupportLSW.append(ls)
SupportL.append(SupportLSW)
elif direction == "East":
shortListedLines = []
SupportLSE = []
for ls in supportLinesegments:
if bbMax.x - 3 < ls.startPoint.x and fabs(
ls.endPoint.x - ls.startPoint.x) < 3 and fabs(
ls.endPoint.y - ls.startPoint.y) > 5:
shortListedLines.append(ls)
for ls in shortListedLines:
projectedPt = MathUtils.ProjectToLine2(
ls.startPoint, ls.endPoint, bbMax)
projectedDistance = bbMax.DistanceTo(projectedPt)
if projectedDistance < 8:
SupportLSE.append(ls)
SupportL.append(SupportLSE)
elif direction == "North":
shortListedLines = []
SupportLSN = []
for ls in supportLinesegments:
if bbMin.y + 3 > ls.startPoint.y and fabs(
ls.endPoint.y - ls.startPoint.y) < 3 and fabs(
ls.endPoint.x - ls.startPoint.x) > 5:
shortListedLines.append(ls)
for ls in shortListedLines:
projectedPt = MathUtils.ProjectToLine2(
ls.startPoint, ls.endPoint, bbMin)
projectedDistance = bbMin.DistanceTo(projectedPt)
if projectedDistance < 8:
SupportLSN.append(ls)
SupportL.append(SupportLSN)
elif direction == "South":
SupportLSS = []
shortListedLines = []
for ls in supportLinesegments:
if bbMax.y - 3 < ls.startPoint.y and fabs(
ls.endPoint.y - ls.startPoint.y) < 3 and fabs(
ls.endPoint.x - ls.startPoint.x) > 5:
shortListedLines.append(ls)
for ls in shortListedLines:
projectedPt = MathUtils.ProjectToLine2(
ls.startPoint, ls.endPoint, bbMax)
projectedDistance = bbMax.DistanceTo(projectedPt)
if projectedDistance < 8:
SupportLSS.append(ls)
SupportL.append(SupportLSS)
d._SupportLines = SupportL
Feature_Manager._DetectedLine = entityLinesegments
