Using relation path in demo; using captcha image instead of lena

Demos/README.md

@@ -11,16 +11,12 @@ PIL Tutorial
  - http://nadiana.com/category/pil
 
 
-## Images used in These Demos
+## Image used in these demos
+
+    wget http://upload.wikimedia.org/wikipedia/commons/6/69/Captcha.jpg -O image_resources/captcha.jpg
 
 
-http://www.cs.cmu.edu/~chuck/lennapg/
+## Build it on Mac OS X 10.6.*
-
-    wget http://www.cs.cmu.edu/~chuck/lennapg/lena_std.tif -O image_resources/lena_std.tif
-    wget http://www.cs.cmu.edu/~chuck/lennapg/len_std.jpg -O image_resources/len_std.jpg
-
-
-## Build it on Mac OS X 10.6.8
 
 Build an egg for i386 with Python 2.5/Python 2.6
 
@@ -35,6 +31,6 @@ Build an egg for x86_64 with Python 2.7(install it via MacPorts)
     python setup.py bdist_egg
 
 
-## Install it via Package Management System
+## Install it via package management system
 
 HomeBrew is cool, you could use it instead of MacPorts on OS X.

Demos/access_pixsel/access_pixsel.py

@@ -1,10 +1,9 @@
 #!/usr/bin/env python
 import os
-PWD = os.path.dirname(os.path.realpath(__file__))
-parent_path = os.path.dirname(PWD)
-
 import Image
 
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
 file_path = os.path.join(parent_path, "image_resources", "captcha.jpg")
 
 im = Image.open(fp = file_path)

Demos/crop/crop.py

@@ -1,19 +1,18 @@
 #!/usr/bin/env python
 import os
-PWD = os.path.dirname(os.path.realpath(__file__))
-parent_path = os.path.dirname(PWD)
-
 import Image
 
-file_path = os.path.join(parent_path, "image_resources", "l_hires.jpg")
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
+file_path = os.path.join(parent_path, "image_resources", "captcha.jpg")
 
 im = Image.open(fp = file_path)
 
-left_upper_x, left_upper_y = 400, 100
+left_upper_x, left_upper_y = 0, 0
-right_lower_x, right_lower_y = 700, 450
+right_lower_x, right_lower_y = 100, 50
 box = (left_upper_x, left_upper_y, right_lower_x, right_lower_y)
 
 region = im.crop(box)
 
 new_filename = "x".join([str(i) for i in box]) + ".jpg"
-region.save(new_filename)
+region.save(os.path.join(PWD, new_filename))

Demos/cutting_pasting_and_merging/cutting_pasting_and_merging.py

@@ -1,14 +1,11 @@
 #!/usr/bin/env python
-"""
-copy image
-"""
 import os
-PWD = os.path.dirname(os.path.realpath(__file__))
-parent_path = os.path.dirname(PWD)
-
 import Image
 
-file_path = os.path.join(parent_path, "image_resources", "l_hires.jpg")
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
+file_path = os.path.join(parent_path, "image_resources", "captcha.jpg")
+
 im = Image.open(fp = file_path)
 
 left_upper_x, left_upper_y = 10, 10
@@ -21,4 +18,4 @@ region = region.transpose(Image.ROTATE_90)
 im.paste(region, box)
 
 new_filename = "C-c-C-v-left" + ".jpg"
-im.save(new_filename)
+im.save(os.path.join(PWD, new_filename))

Demos/draw_line/draw_line.py

@@ -1,15 +1,16 @@
 #!/usr/bin/env python
+import os
 import Image
 import ImageDraw
 
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
+
 BLACK = "#000000"
 WHITE = "#ffffff"
 
-fg_color = BLACK
-bg_color = WHITE
-
 canvas_w, canvas_h = 100, 100
-im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=bg_color)
+im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=WHITE)
 
 draw = ImageDraw.Draw(im=im)
 
@@ -17,6 +18,6 @@ left_top_x, left_top_y = 10, 10
 right_bottom_x, right_bottom_y = 30, 100
 box = (left_top_x, left_top_y, right_bottom_x, right_bottom_y)
 
-draw.line(xy=box, fill=fg_color, width=1)
+draw.line(xy=box, fill=BLACK, width=1)
 
-im.save("draw_line.jpeg")
+im.save(os.path.join(PWD, "draw_line.jpg"))

Demos/draw_points/draw_points.py

@@ -1,17 +1,17 @@
 #!/usr/bin/env python
+import os
 import Image
 import ImageDraw
 
 
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
+
 BLACK = "#000000"
 WHITE = "#ffffff"
 
-fg_color = BLACK
-bg_color = WHITE
-
-
 canvas_w, canvas_h = 100, 100
-im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=bg_color)
+im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=WHITE)
 
 draw = ImageDraw.Draw(im=im)
 
@@ -21,6 +21,6 @@ draw = ImageDraw.Draw(im=im)
 
 points = ((10, 10), (40, 10), (55, 35), (40,50))
 for point in points:
-    draw.point(xy=point, fill=fg_color)
+    draw.point(xy=point, fill=BLACK)
 
-im.save("draw_points.jpeg")
+im.save(os.path.join(PWD, "draw_points.jpg"))

Demos/draw_polygon/draw_polygon.py

@@ -1,15 +1,18 @@
 #!/usr/bin/env python
+import os
 import Image
 import ImageDraw
 
+
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
+
 BLACK = "#000000"
 WHITE = "#ffffff"
 RED = "#ff0000"
-bg_color = WHITE
-
 
 canvas_w, canvas_h = 100, 100
-im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=bg_color)
+im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=WHITE)
 
 draw = ImageDraw.Draw(im=im)
 
@@ -19,4 +22,4 @@ draw = ImageDraw.Draw(im=im)
 
 xy = ((10, 10), (40, 10), (55, 35), (40,50))
 draw.polygon(xy=xy, fill=RED, outline=BLACK)
-im.save("draw_polygon.jpeg")
+im.save(os.path.join(PWD, "draw_polygon.jpg"))

Demos/draw_rectangle/draw_rectangle.py

@@ -1,16 +1,16 @@
 #!/usr/bin/env python
+import os
 import Image
 import ImageDraw
 
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
+
 BLACK = "#000000"
 WHITE = "#ffffff"
 
-fg_color = BLACK
-bg_color = WHITE
-
-
 canvas_w, canvas_h = 100, 100
-im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=bg_color)
+im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=WHITE)
 
 draw = ImageDraw.Draw(im=im)
 
@@ -18,6 +18,6 @@ left_top_x, left_top_y = 10, 10
 right_bottom_x, right_bottom_y = 30, 100
 box = (left_top_x, left_top_y, right_bottom_x, right_bottom_y)
 
-draw.rectangle(xy=box, fill=fg_color, outline=None)
+draw.rectangle(xy=box, fill=BLACK, outline=None)
 
-im.save("draw_rectangle.jpeg")
+im.save(os.path.join(PWD, "draw_rectangle.jpg"))

Demos/draw_text/draw_text.py

@@ -1,7 +1,13 @@
 #!/usr/bin/env python
-from PIL import Image, ImageDraw, ImageFont
+import os
 import sys
 
+from PIL import Image, ImageDraw, ImageFont
+
+
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
+
 BLACK = "#ffffff"
 WHITE = "#000000"
 
@@ -10,7 +16,7 @@ bg_color = BLACK
 
 
 canvas_w, canvas_h = 180, 50
-im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=bg_color)
+im = Image.new(mode="RGB", size=(canvas_w, canvas_h), color=WHITE)
 
 draw = ImageDraw.Draw(im=im)
 
@@ -29,6 +35,6 @@ else:
 font_size = 26
 font = ImageFont.truetype(filename=filename, size=font_size)
 
-draw.text(xy=begin, text=text, fill=fg_color, font=font)
+draw.text(xy=begin, text=text, fill=BLACK, font=font)
 
-im.save("draw_text.bmp")
+im.save(os.path.join(PWD, "draw_text.bmp"))

Demos/flip/flip.py

@@ -1,11 +1,11 @@
 #!/usr/bin/env python
 import os
-PWD = os.path.dirname(os.path.realpath(__file__))
-parent_path = os.path.dirname(PWD)
-
 import Image
 
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
 file_path = os.path.join(parent_path, "image_resources", "captcha.jpg")
+
 im = Image.open(fp=file_path)
 
 #new_im = im.transpose(Image.FLIP_LEFT_RIGHT)
@@ -14,4 +14,4 @@ im = Image.open(fp=file_path)
 new_im = im.transpose(Image.FLIP_TOP_BOTTOM)
 new_filename = os.path.splitext(os.path.basename(file_path))[0] + '-' + "flip_top_bottom" + ".jpg"
 
-new_im.save(new_filename)
+new_im.save(os.path.join(PWD, new_filename))

Demos/grayscale/grayscale.py

@@ -1,11 +1,11 @@
 #!/usr/bin/env python
 import os
+import Image
+
 PWD = os.path.dirname(os.path.realpath(__file__))
 parent_path = os.path.dirname(PWD)
 
-import Image
+file_path = os.path.join(parent_path, "image_resources", "captcha.jpg")
-
-file_path = os.path.join(parent_path, "image_resources", "l_hires.jpg")
 
 im = Image.open(fp=file_path)
 
@@ -14,5 +14,6 @@ im = Image.open(fp=file_path)
 new_im = im.convert("L")
 new_file_name = os.path.splitext(os.path.basename(file_path))[0]
 new_file_name = new_file_name + '-' + 'grayscale' + '.bmp'
-new_im.save(new_file_name)
+
+new_im.save(os.path.join(PWD, new_file_name))
 

Demos/histogram/histogram.py

@@ -1,10 +1,10 @@
 #!/usr/bin/env python
 import os
-PWD = os.path.dirname(os.path.realpath(__file__))
-parent_path = os.path.dirname(PWD)
-
 import Image, ImageDraw
 
+
+PWD = os.path.dirname(os.path.realpath(__file__))
+parent_path = os.path.dirname(PWD)
 file_path = os.path.join(parent_path, "image_resources", "captcha.jpg")
 
 BLACK = 0
@@ -52,4 +52,4 @@ for x in xrange(w):
 new_file_name = os.path.splitext(os.path.basename(file_path))[0]
 new_file_name = new_file_name + '-' + 'histogram' + '.bmp'
 
-hist_im.save(new_file_name)
+hist_im.save(os.path.join(PWD, new_file_name))

Demos/image_info/get_img_info.py

@@ -1,10 +1,11 @@
 #!/usr/bin/env python
 import os
+import Image
+
+
 PWD = os.path.dirname(os.path.realpath(__file__))
 parent_path = os.path.dirname(PWD)
 
-import Image
-
 file_path = os.path.join(parent_path, "image_resources", "captcha.jpg")
 
 im = Image.open(fp=file_path)

Demos/rotate/rotate.py

@@ -1,10 +1,11 @@
 #!/usr/bin/env python
 import os
+import Image
+
+
 PWD = os.path.dirname(os.path.realpath(__file__))
 parent_path = os.path.dirname(PWD)
 
-import Image
-
 file_path = os.path.join(parent_path, "image_resources", "captcha.jpg")
 
 im = Image.open(fp=file_path)
@@ -12,4 +13,4 @@ degress = 90
 new_im = im.rotate(degress)
 
 new_filename = os.path.splitext(os.path.basename(file_path))[0] + "-rotate-" + str(degress) + ".jpg"
-new_im.save(new_filename)
+new_im.save(os.path.join(PWD, new_filename))

Demos/thumbnail/thumbnail.py

@@ -1,15 +1,16 @@
 #!/usr/bin/env python
 import os
+import Image
+
+
 PWD = os.path.dirname(os.path.realpath(__file__))
 parent_path = os.path.dirname(PWD)
 
-import Image
+file_path = os.path.join(parent_path, "image_resources", 'captcha.jpg')
-
-file_path = os.path.join(parent_path, "image_resources", 'l_hires.jpg')
 im = Image.open(fp=file_path)
 
 width, height = im.size[0], im.size[1]
-new_size = (width/8, height/8)
+new_size = (width/4, height/4)
 
 im.thumbnail(new_size)
 
@@ -17,4 +18,4 @@ new_filename= "x".join([str(i) for i in new_size])
 new_filename = os.path.splitext(os.path.basename(file_path))[0] + '-' + new_filename + ".jpg"
 new_file_path = os.path.join(PWD, new_filename)
 
-im.save(new_filename)
+im.save(os.path.join(PWD, new_filename))