Captcha - Revision history

Andre at 10:24, 12 June 2015

2015-06-12T10:24:32Z

← Older revision		Revision as of 10:24, 12 June 2015
Line 93:		Line 93:
	[[File:human_010.svg]]		[[File:human_010.svg]]

	~~If line instructing program~~ to plot a wireframe,		You can change the instruction to plot a wireframe,
	ax.plot_wireframe(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) )		ax.plot_wireframe(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) )

	~~is replace~~ for ~~an instruction~~ to plot a surface:		for one to plot a surface:
	ax.plot_surface(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) )		ax.plot_surface(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) )
	the result looks like [[File:human_000.png]]
			the result looks like
			[[File:human_000.png]]

	[[Category:Research]]		[[Category:Research]]

Andre at 16:09, 10 June 2015

2015-06-10T16:09:03Z

← Older revision		Revision as of 16:09, 10 June 2015
Line 100:		Line 100:
	the result looks like [[File:human_000.png]]		the result looks like [[File:human_000.png]]

	~~[[Category:Cookbook]]~~
	[[Category:Research]]		[[Category:Research]]

Andre at 16:08, 10 June 2015

2015-06-10T16:08:30Z

← Older revision		Revision as of 16:08, 10 June 2015
Line 100:		Line 100:
	the result looks like [[File:human_000.png]]		the result looks like [[File:human_000.png]]

	[[Category:~~cookbook~~]]		[[Category:Cookbook]]
	[[Category:~~research~~]]		[[Category:Research]]

Andre at 16:07, 10 June 2015

2015-06-10T16:07:58Z

← Older revision		Revision as of 16:07, 10 June 2015
Line 101:		Line 101:

	[[Category:cookbook]]		[[Category:cookbook]]
			[[Category:research]]

Andre at 16:05, 10 June 2015

2015-06-10T16:05:10Z

← Older revision		Revision as of 16:05, 10 June 2015
Line 98:		Line 98:
	is replace for an instruction to plot a surface:		is replace for an instruction to plot a surface:
	ax.plot_surface(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) )		ax.plot_surface(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) )
	the result looks like [[File:~~human_010~~.png]]		the result looks like [[File:human_000.png]]

	[[Category:cookbook]]		[[Category:cookbook]]

Andre at 16:03, 10 June 2015

2015-06-10T16:03:22Z

← Older revision		Revision as of 16:03, 10 June 2015
Line 38:		Line 38:
	img_ext = 'png' # image extension. Supported formats: eps, jpeg, jpg, pdf, pgf, png, ps, raw, rgba, svg, svgz, tif, tiff.		img_ext = 'png' # image extension. Supported formats: eps, jpeg, jpg, pdf, pgf, png, ps, raw, rgba, svg, svgz, tif, tiff.

	def makeImage(text, width=400, height=200, angle=None, ext='png', rgbcolor=(1,0,1)):		def makeImage(text, width=400, height=200, angle=None, ext='png', rgbcolor=(1,0,1)):
	'''Generate a 3d CAPTCHA image.		'''Generate a 3d CAPTCHA image.
	Args:		Args:
	text: Text in the image.		text: Text in the image.
	width: Image width in pixel.		width: Image width in pixel.
	height: Image height in pixel.		height: Image height in pixel.
	angle: The angle between text and X axis.		angle: The angle between text and X axis.
	Returns:		Returns:
	Binary data of CAPTCHA image in PNG format.		Binary data of CAPTCHA image in PNG format.
	'''		'''
	angle = angle if angle != None else uniform(-20, 20)		angle = angle if angle != None else uniform(-20, 20)
	try:		try:
	font = ImageFont.truetype(fontPath, 24)		font = ImageFont.truetype(fontPath, 24)
	except IOError:		except IOError:
	raise IOError(		raise IOError(
	'Font file doesn\'t exist. Please set `fontPath` correctly.')		'Font file doesn\'t exist. Please set `fontPath` correctly.')
	txtW, txtH = font.getsize(text)		txtW, txtH = font.getsize(text)
	img = Image.new('L', (txtW * 3, txtH * 3), color=255)		img = Image.new('L', (txtW * 3, txtH * 3), color=255)
	drw = ImageDraw.Draw(img)		drw = ImageDraw.Draw(img)
	drw.text((txtW, txtH), text, font=font)		drw.text((txtW, txtH), text, font=font)

	fig = pylab.figure(figsize=(width/100.0, height/100.0))		fig = pylab.figure(figsize=(width/100.0, height/100.0))
	ax = Axes3D(fig)		ax = Axes3D(fig)
	X, Y = numpy.meshgrid(range(img.size[0]), range(img.size[1]))		X, Y = numpy.meshgrid(range(img.size[0]), range(img.size[1]))
	Z = 1 - numpy.asarray(img) / 255		Z = 1 - numpy.asarray(img) / 255
	ax.plot_wireframe(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) ) # "plot_wireframe" can be replace by "plot_surface" to produce a surface		ax.plot_wireframe(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) ) # "plot_wireframe" can be replace by "plot_surface" to produce a surface
	ax.set_zlim((-3, 3))		ax.set_zlim((-3, 3))
	ax.set_xlim((txtW * 1.1, txtW * 1.9))		ax.set_xlim((txtW * 1.1, txtW * 1.9))
	ax.set_ylim((-txtH * 1.9, -txtH * 1.1))		ax.set_ylim((-txtH * 1.9, -txtH * 1.1))
	ax.set_axis_off()		ax.set_axis_off()
	ax.view_init(elev=60, azim=-90 + angle)		ax.view_init(elev=60, azim=-90 + angle)

	fim = StringIO()		fim = StringIO()
	fig.savefig(fim, format=ext)		fig.savefig(fim, format=ext)
Line 78:		Line 79:
	degrees = [i*10 for i in range(0,36)] # list different degrees		degrees = [i*10 for i in range(0,36)] # list different degrees
	for n in degrees: # for loop will produce 35 different images, each in a different angle		for n in degrees: # for loop will produce 35 different images, each in a different angle
	img = makeImage(text='Are you human?', width=600, height=300, angle=n, ext=img_ext ) # Essential command: text, width, height, angle		img = makeImage(text='Are you human?', width=600, height=300, angle=n, ext=img_ext, rgbcolor=(0.05,0.8,0.3) ) # Essential command: text, width, height, angle, extension, color
	n = str(n).rjust(3, '0')		n = str(n).rjust(3, '0')
	filename = 'human_{}.{}'.format(n, img_ext)		filename = 'human_{}.{}'.format(n, img_ext)
Line 87:		Line 88:
	</source>		</source>

	Example output:		Example output: with makeImage set to:
			img = makeImage(text='Are you human?', width=600, height=300, angle=n, ext=img_ext )

	[[File:human_010.svg]]		[[File:human_010.svg]]

			If line instructing program to plot a wireframe,
			ax.plot_wireframe(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) )

			is replace for an instruction to plot a surface:
			ax.plot_surface(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) )
			the result looks like [[File:human_010.png]]

	[[Category:cookbook]]		[[Category:cookbook]]

Andre: /* possible changes to script */

2015-06-10T15:37:56Z

possible changes to script

← Older revision		Revision as of 15:37, 10 June 2015
Line 38:		Line 38:
	img_ext = 'png' # image extension. Supported formats: eps, jpeg, jpg, pdf, pgf, png, ps, raw, rgba, svg, svgz, tif, tiff.		img_ext = 'png' # image extension. Supported formats: eps, jpeg, jpg, pdf, pgf, png, ps, raw, rgba, svg, svgz, tif, tiff.

	def makeImage(text, width=400, height=200, angle=None, ext='png'):		def makeImage(text, width=400, height=200, angle=None, ext='png', rgbcolor=(1,0,1)):
	'''Generate a 3d CAPTCHA image.		'''Generate a 3d CAPTCHA image.
	Args:		Args:
	text: Text in the image.		text: Text in the image.
	width: Image width in pixel.		width: Image width in pixel.
	height: Image height in pixel.		height: Image height in pixel.
	angle: The angle between text and X axis.		angle: The angle between text and X axis.
	Returns:		Returns:
	Binary data of CAPTCHA image in PNG format.		Binary data of CAPTCHA image in PNG format.
	'''		'''
	angle = angle if angle != None else uniform(-20, 20)		angle = angle if angle != None else uniform(-20, 20)
	try:		try:
	font = ImageFont.truetype(fontPath, 24)		font = ImageFont.truetype(fontPath, 24)
	except IOError:		except IOError:
	raise IOError(		raise IOError(
	'Font file doesn\'t exist. Please set `fontPath` correctly.')		'Font file doesn\'t exist. Please set `fontPath` correctly.')
	txtW, txtH = font.getsize(text)		txtW, txtH = font.getsize(text)
	img = Image.new('L', (txtW * 3, txtH * 3), 255)		img = Image.new('L', (txtW * 3, txtH * 3), color=255)
	drw = ImageDraw.Draw(img)		drw = ImageDraw.Draw(img)
	drw.text((txtW, txtH), text, font=font)		drw.text((txtW, txtH), text, font=font)

	fig = pylab.figure(figsize=(width/100.0, height/100.0))		fig = pylab.figure(figsize=(width/100.0, height/100.0))
	ax = Axes3D(fig)		ax = Axes3D(fig)
	X, Y = numpy.meshgrid(range(img.size[0]), range(img.size[1]))		X, Y = numpy.meshgrid(range(img.size[0]), range(img.size[1]))
	Z = 1 - numpy.asarray(img) / 255		Z = 1 - numpy.asarray(img) / 255
	ax.plot_wireframe(X, -Y, Z, rstride=1, cstride=1)		ax.plot_wireframe(X, -Y, Z, rstride=1, cstride=1, color=( rgbcolor ) ) # "plot_wireframe" can be replace by "plot_surface" to produce a surface
	ax.set_zlim((-3, 3))		ax.set_zlim((-3, 3))
	ax.set_xlim((txtW * 1.1, txtW * 1.9))		ax.set_xlim((txtW * 1.1, txtW * 1.9))
	ax.set_ylim((-txtH * 1.9, -txtH * 1.1))		ax.set_ylim((-txtH * 1.9, -txtH * 1.1))
	ax.set_axis_off()		ax.set_axis_off()
	ax.view_init(elev=60, azim=-90 + angle)		ax.view_init(elev=60, azim=-90 + angle)

	fim = StringIO()		fim = StringIO()
	fig.savefig(fim, format=ext)		fig.savefig(fim, format=ext)
Line 90:		Line 89:
	Example output:		Example output:
	[[File:human_010.svg]]		[[File:human_010.svg]]


	[[Category:cookbook]]		[[Category:cookbook]]

Andre: /* possible changes to script */

2015-06-10T11:44:32Z

possible changes to script

← Older revision		Revision as of 11:44, 10 June 2015
Line 87:		Line 87:

	</source>		</source>

			Example output:
			[[File:human_010.svg]]

	[[Category:cookbook]]		[[Category:cookbook]]

Andre at 11:43, 10 June 2015

2015-06-10T11:43:12Z

← Older revision		Revision as of 11:43, 10 June 2015
Line 16:		Line 16:
	python captcha.py		python captcha.py

	==== possible changes to script===		==== possible changes to script ====
	captcha.py allows different parameters to be changed, namely		captcha.py allows different parameters to be changed, namely
	* font-face: fontPath = '/Library/Fonts/Arial.ttf'		* font-face: fontPath = '/Library/Fonts/Arial.ttf'

Andre at 11:42, 10 June 2015

2015-06-10T11:42:51Z

@@ Line 6: / Line 6: @@
 ==Python==
-===3 Capthas===
+===3D Captcha===
 [[Category:cookbook]]