denoising.py/docs/Noise.readme

Classes:


/******************/
/** COLORIZATION **/
/******************/
Principe: colorer en modifiant les pixels (n&b) dans un ton (teinte) précisée

restitue la contraste mais recentre la couleur autour de la teinte
/************ ALGO **************/
i = 50				// incertitude
t = RGBPixel(1,2,3)	// teinte souhaitée
p = RGBPixel(1,2,3)	// couleur actuelle

/************ CODE **************/
def colorize(pixel, tint):




/*****************/
/** SHAPIZATION **/
/*****************/
Principe: récupérer une forme par récurrence

Ajouter les 8 bits périphériques du pixel courant s'il existe et s'il a des couleurs pas trop éloignées des précédentes
/************ ALGO **************/

/************ CODE **************/
def getShape(self, coords, pixelMap, pixelList ): # return PixelList
	# coords = [lastx, lasty, x, y]
	width  = len( pixelMap[0] )	
	height = len( pixelMap    )

	lastx = coords[0]
	lasty = coords[1]
	x     = coords[2]
	y     = coords[3]

	newCoords = [x, y]


	# si le pixel existe (pas de dépassement de la pixelMap)
	if x<width and x>=0 and y<height and y>=0:

		already = False;
		for i in range(0, len(pixelList)):
			if pixelList[i] == pixelMap[y][x]:
				already = True;
				break

		# si le pixel n'est pas déjà dans le tableau
		if not already:
			
			pixelMap[y][x].setRGB(255,0,0); # debug, tout rouge

			pixelList.append( pixelMap[y][x] ) # ajout au tableau

			self.getShape(newCoords+[x-1, y+1], pixelMap, pixelList) # 1
			self.getShape(newCoords+[x,   y+1], pixelMap, pixelList)   # 2
			self.getShape(newCoords+[x+1, y+1], pixelMap, pixelList) # 3

			self.getShape(newCoords+[x-1, y],   pixelMap, pixelList)   # 4
			# current pixel
			self.getShape(newCoords+[x+1, y],   pixelMap, pixelList)   # 6

			self.getShape(newCoords+[x-1, y-1], pixelMap, pixelList) # 7
			self.getShape(newCoords+[x,   y-1], pixelMap, pixelList)   # 8
			self.getShape(newCoords+[x+1, y-1], pixelMap, pixelList) # 9































def getShapeRecursive(self, coords, pixelMap, pixelList ): # return PixelList
		# coords = [lastx, lasty, x, y]
		width  = len( pixelMap[0] )	
		height = len( pixelMap    )

		lastx = coords[0]
		lasty = coords[1]
		x     = coords[2]
		y     = coords[3]

		newCoords = [x, y]


		# si le pixel existe (pas de dépassement de la pixelMap)
		if x<width and x>=0 and y<height and y>=0:

			already = False;
			for i in range(0, len(pixelList)):
				if pixelList[i] == pixelMap[y][x]:
					already = True;
					break

			# si le pixel n'est pas déjà dans le tableau
			if not already:

				pixelMap[y][x].setRGB(255,0,0);

				# si trop de différence
				lastP = pixelMap[lasty][lastx]
				pix   = pixelMap[y][x]



				if abs(lastP.r-pix.r) <= 50 and abs(lastP.g-pix.g) <= 50 and abs(lastP.b-pix.b) <= 50:

					pixelList.append( pixelMap[y][x] ) # ajout au tableau

					self.getShapeRecursive( [x, y, x-1, y+1], pixelMap, pixelList) # 1
					self.getShapeRecursive( [x, y, x,   y+1], pixelMap, pixelList) # 2
					self.getShapeRecursive( [x, y, x+1, y+1], pixelMap, pixelList) # 3

					self.getShapeRecursive( [x, y, x-1, y ],  pixelMap, pixelList) # 4
					# current pixel
					self.getShapeRecursive( [x, y, x+1, y ],  pixelMap, pixelList) # 6

					self.getShapeRecursive( [x, y, x-1, y-1], pixelMap, pixelList) # 7
					self.getShapeRecursive( [x, y, x,   y-1], pixelMap, pixelList) # 8
					self.getShapeRecursive( [x, y, x+1, y-1], pixelMap, pixelList) # 9

	
	def getShape(self, coords, pixelMap, pixelList):
		# coords = [lastx, lasty, x, y]
		width  = len( pixelMap[0] )	
		height = len( pixelMap    )
		
		lastx = coords[0]
		lasty = coords[1]
		x     = coords[2]
		y     = coords[3]

		if x<width and x>=0 and y<height and y>=0:

			already = False;
			for pix in pixelList:
				if pix == pixelMap[y][x]:
					already = True;
					break

			# si le pixel n'est pas déjà dans le tableau
			if not already:

				# si trop de différence
				lastP = pixelMap[lasty][lastx]
				pix   = pixelMap[y][x]

				if abs(lastP.r-pix.r) <= 50 and abs(lastP.g-pix.g) <= 50 and abs(lastP.b-pix.b) <= 50:

					return pixelMap[y][x];

				# self.getShape( [x, y, x-1, y+1], pixelMap, pixelList) # 1
				# self.getShape( [x, y, x,   y+1], pixelMap, pixelList) # 2
				# self.getShape( [x, y, x+1, y+1], pixelMap, pixelList) # 3

				# self.getShape( [x, y, x-1, y ],  pixelMap, pixelList) # 4
				# # current pixel
				# self.getShape( [x, y, x+1, y ],  pixelMap, pixelList) # 6

				# self.getShape( [x, y, x-1, y-1], pixelMap, pixelList) # 7
				# self.getShape( [x, y, x,   y-1], pixelMap, pixelList) # 8
				# self.getShape( [x, y, x+1, y-1], pixelMap, pixelList) # 9

		return None # return none si le pixel n'est plus de la forme