python-modules/imageSimplify.py at master · deborah-powers/python-modules · GitHub

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#!/usr/bin/python3.6
# -*- coding: utf-8 -*-
import numpy
from kmeans import Kmeans, KmeansTablesNb
from imageCls import ImageFile
import loggerFct as log

class KmeansBw (Kmeans):
	def __init__ (self, colors):
		Kmeans.__init__ (self, 15, colors)

	def computeScore (self, groupId, itemId):
		score = self.groups [groupId][1] - self.values [itemId]
		if score <0: score *=-1
		return score

	def computeMean (self, groupId):
		groupLen = len (self.groups [groupId])
		groupRange = range (1, groupLen)
		score =0
		for g in groupRange: score += self.groups [groupId][g]
		groupLen -=1
		score /= groupLen
		return int (score)

class KmeansCol (Kmeans):
	def __init__ (self, colors):
		Kmeans.__init__ (self, 40, colors)

	def computeScore (self, groupId, itemId):
		scoreR = self.groups [groupId][1][0] - self.values [itemId][0]
		scoreG = self.groups [groupId][1][1] - self.values [itemId][1]
		scoreB = self.groups [groupId][1][2] - self.values [itemId][2]
		if scoreR <0: scoreR *=-1
		if scoreG <0: scoreG *=-1
		if scoreB <0: scoreB *=-1
		score = scoreR + scoreG + scoreB
		return score

	def computeMean (self, groupId):
		groupLen = len (self.groups [groupId])
		groupRange = range (1, groupLen)
		scoreR =0
		scoreG =0
		scoreB =0
		for g in groupRange:
			scoreR = scoreR + self.groups [groupId][g][0]
			scoreG = scoreG + self.groups [groupId][g][1]
			scoreB = scoreB + self.groups [groupId][g][2]
		groupLen -=1
		scoreR /= groupLen
		scoreG /= groupLen
		scoreB /= groupLen
		return (int (scoreR), int (scoreG), int (scoreB))

def findColorIsland (self, coords, island, neighbourgs):
	if coords in island: return island, neighbourgs
	island.add (coords)
	neighbourgList =[]
	if coords[0] >0:
		if self.array[coords[0]][coords[1]] == self.array[coords[0] -1][coords[1]]: neighbourgList.append ((coords[0] -1, coords[1]))
		elif self.array[coords[0] -1][coords[1]] in neighbourgs.keys(): neighbourgs [self.array[coords[0] -1][coords[1]]] +=1
		else: neighbourgs [self.array[coords[0] -1][coords[1]]] =1
	if coords[0] < len (self.array) -1:
		if self.array[coords[0]][coords[1]] == self.array[coords[0] +1][coords[1]]: neighbourgList.append ((coords[0] +1, coords[1]))
		elif self.array[coords[0] +1][coords[1]] in neighbourgs.keys(): neighbourgs [self.array[coords[0] +1][coords[1]]] +=1
		else: neighbourgs [self.array[coords[0] +1][coords[1]]] =1
	if coords[1] >0:
		if self.array[coords[0]][coords[1]] == self.array[coords[0]][coords[1] -1]: neighbourgList.append ((coords[0], coords[1] -1))
		elif self.array[coords[0]][coords[1] -1] in neighbourgs.keys(): neighbourgs [self.array[coords[0]][coords[1] -1]] +=1
		else: neighbourgs [self.array[coords[0]][coords[1] -1]] =1
	if coords[1] < len (self.array[0]) -1:
		if self.array[coords[0]][coords[1]] == self.array[coords[0]][coords[1] +1]: neighbourgList.append ((coords[0], coords[1] +1))
		elif self.array[coords[0]][coords[1] +1] in neighbourgs.keys(): neighbourgs [self.array[coords[0]][coords[1] +1]] +=1
		else: neighbourgs [self.array[coords[0]][coords[1] +1]] =1
	if len (neighbourgList) >3:	# si plus de quatre éléments dans l'îlot, il est considéré comme un continent
		for neigh in neighbourgList: island.add (neigh)
	else:
		for neigh in neighbourgList: island, neighbourgs = self.findColorIsland (neigh, island, neighbourgs)
	return island, neighbourgs

def eraseColorIsland (self, island, neighbourgs):
	colors = neighbourgs.keys()
	color = list (colors)[0]
	for col in colors:
		if neighbourgs [col] > neighbourgs [color]: color = col
	for h,w in island: self.array[h][w] = color

def eraseColorIslands (self):
	rangeHeight = range (len (self.array))
	rangeWidth = range (len (self.array[0]))
	seenPoints = set()
	for h in rangeHeight:
		for w in rangeWidth:
			island, neighbourgs = self.findColorIsland ((h,w), set(), dict())
			seenPoints.update (island)
			if len (island) <4: self.eraseColorIsland (island, neighbourgs)

def findColorFronters (self):
	lenHeight = len (self.array)
	lenWidth = len (self.array[0])
	rangeHeight = range (lenHeight)
	rangeWidth = range (1, lenWidth)
	for h in rangeHeight:
		v=0
		for w in rangeWidth:
			if self.array[h][w] == self.array[h][w-1]: continue
			diff = int (self.array[h][w]) - int (self.array[h][w-1])
			if diff <-30 or diff >30:
				diff = int (self.array[h][v]) - int (self.array[h][w-1])
				while v< w-1 and diff >=-30 and diff <=30:
					self.array[h][v] = self.array[h][w-1]
					v+=1
					diff = int (self.array[h][v]) - int (self.array[h][w-1])
				v=w
		diff = int (self.array[h][v]) - int (self.array[h][-1])
		while v< lenWidth -1 and diff >=-30 and diff <=30:
			self.array[h][v] = self.array[h][-1]
			v+=1
			diff = int (self.array[h][v]) - int (self.array[h][-1])
	rangeHeight = range (1, len (self.array))
	rangeWidth = range (len (self.array[0]))
	for h in rangeWidth:
		v=0
		for w in rangeHeight:
			if self.array[h][w] == self.array[h-1][w]: continue
			diff = int (self.array[h][w]) - int (self.array[h-1][w])
			if diff <-5 or diff >5:
				diff = int (self.array[v][w]) - int (self.array[h-1][w])
				while v< h-1 and diff >=-30 and diff <=30:
					self.array[v][w] = self.array[h-1][w]
					v+=1
					diff = int (self.array[v][w]) - int (self.array[h-1][w])
				v=h
		diff = int (self.array[v][w]) - int (self.array[-1][w])
		while v< lenHeight -1 and diff >=-30 and diff <=30:
			self.array[v][w] = self.array[-1][w]
			v+=1
			diff = int (self.array[v][w]) - int (self.array[-1][w])

def simplifyColors (self):
	self.image = self.image.quantize (12)
	self.image = self.image.convert ('RGB')
	colors = self.getColors()
	colorKmeans = KmeansCol (colors)
	colorKmeans.BuildGroup()
	self.toArray()
	for group in colorKmeans.groups:
		for r,g,b in group:
			red, green, blue = self.array.T
			colorArea = (red == r) & (green == g) & (blue == b)
			self.array[colorArea.T] = (group[0][0], group[0][1], group[0][2])
	self.fromArray()
	self.image = self.image.quantize (12)
	palette = bytearray (self.image.palette.palette)
	self.toArray()
	self.eraseColorIslands()
	self.fromArray()
	self.image.putpalette (palette)
	self.image = self.image.convert ('RGB')
	self.toArray()
	self.findColorFronters()
	self.fromArray()
	self.image.putpalette (palette)

setattr (ImageFile, 'simplifyColors', simplifyColors)
setattr (ImageFile, 'eraseColorIslands', eraseColorIslands)
setattr (ImageFile, 'findColorIsland', findColorIsland)
setattr (ImageFile, 'eraseColorIsland', eraseColorIsland)
setattr (ImageFile, 'findColorFronters', findColorFronters)

# anciennes fonctions gardées pour servir d'exemple

def eraseColorIslands_va (self, color):
	rangeHeight = range (len (self.array))
	rangeWidth = range (len (self.array[0]))
	seenPoints = set()
	if color == 'col':
		for h in rangeHeight:
			for w in rangeWidth:
				island, neighbourgs = self.findColorIslandCol ((h,w), set(), dict())
				seenPoints.update (island)
				if len (island) <4: self.eraseColorIsland (island, neighbourgs)
	elif color == 'bw':
		for h in rangeHeight:
			for w in rangeWidth:
				island, neighbourgs = self.findColorIslandBw ((h,w), set(), dict())
				seenPoints.update (island)
				if len (island) <4: self.eraseColorIsland (island, neighbourgs)

def findColorIslandCol (self, coords, island, neighbourgs):
	if coords in island: return island, neighbourgs
	island.add (coords)
	neighbourgList =[]
	if coords[0] >0:
		if self.array[coords[0]][coords[1]][0] == self.array[coords[0] -1][coords[1]][0] and self.array[coords[0]][coords[1]][1] == self.array[coords[0] -1][coords[1]][1] and self.array[coords[0]][coords[1]][2] == self.array[coords[0] -1][coords[1]][2]:
			neighbourgList.append ((coords[0] -1, coords[1]))
		elif (self.array[coords[0] -1][coords[1]][0], self.array[coords[0] -1][coords[1]][1], self.array[coords[0] -1][coords[1]][2]) in neighbourgs.keys():
			neighbourgs [( self.array[coords[0] -1][coords[1]][0], self.array[coords[0] -1][coords[1]][1], self.array[coords[0] -1][coords[1]][2] )] +=1
		else: neighbourgs [( self.array[coords[0] -1][coords[1]][0], self.array[coords[0] -1][coords[1]][1], self.array[coords[0] -1][coords[1]][2] )] =1
	if coords[0] < len (self.array) -1:
		if self.array[coords[0]][coords[1]][0] == self.array[coords[0] +1][coords[1]][0] and self.array[coords[0]][coords[1]][1] == self.array[coords[0] +1][coords[1]][1] and self.array[coords[0]][coords[1]][2] == self.array[coords[0] +1][coords[1]][2]:
			neighbourgList.append ((coords[0] +1, coords[1]))
		elif (self.array[coords[0] +1][coords[1]][0], self.array[coords[0] +1][coords[1]][1], self.array[coords[0] +1][coords[1]][2]) in neighbourgs.keys():
			neighbourgs [( self.array[coords[0] +1][coords[1]][0], self.array[coords[0] +1][coords[1]][1], self.array[coords[0] +1][coords[1]][2] )] +=1
		else: neighbourgs [( self.array[coords[0] +1][coords[1]][0], self.array[coords[0] +1][coords[1]][1], self.array[coords[0] +1][coords[1]][2] )] =1
	if coords[1] >0:
		if self.array[coords[0]][coords[1]][0] == self.array[coords[0]][coords[1] -1][0] and self.array[coords[0]][coords[1]][1] == self.array[coords[0]][coords[1] -1][1] and self.array[coords[0]][coords[1]][2] == self.array[coords[0]][coords[1] -1][2]:
			neighbourgList.append ((coords[0], coords[1] -1))
		elif (self.array[coords[0]][coords[1] -1][0], self.array[coords[0]][coords[1] -1][1], self.array[coords[0]][coords[1] -1][2]) in neighbourgs.keys():
			neighbourgs [(self.array[coords[0]][coords[1] -1][0], self.array[coords[0]][coords[1] -1][1], self.array[coords[0]][coords[1] -1][2])] +=1
		else: neighbourgs [( self.array[coords[0]][coords[1] -1][0], self.array[coords[0]][coords[1] -1][1], self.array[coords[0]][coords[1] -1][2] )] =1
	if coords[1] < len (self.array[0]) -1:
		if self.array[coords[0]][coords[1]][0] == self.array[coords[0]][coords[1] +1][0] and self.array[coords[0]][coords[1]][1] == self.array[coords[0]][coords[1] +1][1] and self.array[coords[0]][coords[1]][2] == self.array[coords[0]][coords[1] +1][2]:
			neighbourgList.append ((coords[0], coords[1] +1))
		elif (self.array[coords[0]][coords[1] +1][0], self.array[coords[0]][coords[1] +1][1], self.array[coords[0]][coords[1] +1][2]) in neighbourgs.keys():
			neighbourgs [( self.array[coords[0]][coords[1] +1][0], self.array[coords[0]][coords[1] +1][1], self.array[coords[0]][coords[1] +1][2] )] +=1
		else: neighbourgs [( self.array[coords[0]][coords[1] +1][0], self.array[coords[0]][coords[1] +1][1], self.array[coords[0]][coords[1] +1][2] )] =1
	if len (neighbourgList) >3:	# si plus de quatre éléments dans l'îlot, il est considéré comme un continent
		for neigh in neighbourgList: island.add (neigh)
	else:
		for neigh in neighbourgList: island, neighbourgs = self.findColorIslandCol (neigh, island, neighbourgs)
	return island, neighbourgs

def simplifyColorsCol (self):
	self.toArray()
	colors = self.getColors()
	if len (colors) >8:
		colorKmeans = KmeansCol (colors)
		colorKmeans.BuildGroup()
		for group in colorKmeans.groups:
			for r,g,b in group:
				red, green, blue = self.array.T
				colorArea = (red == r) & (green == g) & (blue == b)
				self.array[colorArea.T] = (group[0][0], group[0][1], group[0][2])
#	self.eraseColorIslands ('col')
#	self.findColorFronters()
	self.fromArray()

def simplifyColorsBw (self):
	self.tobw()
	self.toArray()
	colors = self.getColors()
	log.message (colors)
	if len (colors) >8:
		colorKmeans = KmeansBw (colors)
		colorKmeans.BuildGroup()
		for group in colorKmeans.groups:
			for color in group:
				grey = self.array.T
				colorArea = (grey == color)
				self.array[colorArea.T] = group[0]
#	self.eraseColorIslands ('bw')
#	self.findColorFronters()
	self.fromArray()

def eraseLonelyPixelsNb (imageArray):
	# seuls les quatre pixels touchant directement le pixel central sont pris en compte
	# l'image est en noir et blanc
	# les coins de l'image
	if imageArray[0][0] != imageArray[0][1] and imageArray[0][0] != imageArray[1][0]: imageArray[0][0] = imageArray[1][0]
	if imageArray[-1][0] != imageArray[-1][1] and imageArray[-1][0] != imageArray[-2][0]: imageArray[-1][0] = imageArray[-2][0]
	if imageArray[0][-1] != imageArray[0][-2] and imageArray[0][-1] != imageArray[1][-1]: imageArray[0][-1] = imageArray[1][-1]
	if imageArray[-1][-1] != imageArray[-1][-2] and imageArray[-1][-1] != imageArray[-2][-1]: imageArray[-1][-1] = imageArray[-2][-1]
	# les bords de l'image
	rangeWidth = range (len (imageArray[0]))
	rangeHeight = range (len (imageArray))
	for w in rangeWidth:
		if imageArray[0][w] != imageArray[1][w]: imageArray[0][w] = imageArray[1][w]
		if imageArray[-1][w] != imageArray[-2][w]: imageArray[-1][w] = imageArray[-2][w]
	for h in rangeHeight:
		if imageArray[h][0] != imageArray[h][1]: imageArray[h][0] = imageArray[h][1]
		if imageArray[h][-1] != imageArray[h][-2]: imageArray[h][-1] = imageArray[h][-2]
	# le centre de l'image
	rangeWidth = range (1, len (imageArray[0]) -1)
	rangeHeight = range (1, len (imageArray) -1)
	for h in rangeHeight:
		for w in rangeWidth:
			if imageArray[h][w] == imageArray[h][w+1] or imageArray[h][w] == imageArray[h][w-1]: continue
			elif imageArray[h][w] == imageArray[h+1][w] or imageArray[h][w] == imageArray[h-1][w]: continue
			elif imageArray[h+1][w] == imageArray[h-1][w]: imageArray[h][w] = imageArray[h-1][w]
			elif imageArray[h][w+1] == imageArray[h][w-1]: imageArray[h][w] = imageArray[h][w-1]
			elif imageArray[h][w+1] == imageArray[h+1][w] or imageArray[h][w-1] == imageArray[h+1][w]: imageArray[h][w] = imageArray[h+1][w]
			elif imageArray[h][w+1] == imageArray[h-1][w] or imageArray[h][w-1] == imageArray[h-1][w]: imageArray[h][w] = imageArray[h-1][w]
	return imageArray