π‘ Top 50 Pillow Operations for Image Processing
I. File & Basic Operations
β’ Open an image file.
β’ Save an image.
β’ Display an image (opens in default viewer).
β’ Create a new blank image.
β’ Get image format (e.g., 'JPEG').
β’ Get image dimensions as a (width, height) tuple.
β’ Get pixel format (e.g., 'RGB', 'L' for grayscale).
β’ Convert image mode.
β’ Get a pixel's color value at (x, y).
β’ Set a pixel's color value at (x, y).
II. Cropping, Resizing & Pasting
β’ Crop a rectangular region.
β’ Resize an image to an exact size.
β’ Create a thumbnail (maintains aspect ratio).
β’ Paste one image onto another.
III. Rotation & Transformation
β’ Rotate an image (counter-clockwise).
β’ Flip an image horizontally.
β’ Flip an image vertically.
β’ Rotate by 90, 180, or 270 degrees.
β’ Apply an affine transformation.
IV. ImageOps Module Helpers
β’ Invert image colors.
β’ Flip an image horizontally (mirror).
β’ Flip an image vertically.
β’ Convert to grayscale.
β’ Colorize a grayscale image.
β’ Reduce the number of bits for each color channel.
β’ Auto-adjust image contrast.
β’ Equalize the image histogram.
β’ Add a border to an image.
V. Color & Pixel Operations
β’ Split image into individual bands (e.g., R, G, B).
β’ Merge bands back into an image.
β’ Apply a function to each pixel.
β’ Get a list of colors used in the image.
β’ Blend two images with alpha compositing.
VI. Filters (ImageFilter)
I. File & Basic Operations
β’ Open an image file.
from PIL import Image
img = Image.open("image.jpg")
β’ Save an image.
img.save("new_image.png")β’ Display an image (opens in default viewer).
img.show()
β’ Create a new blank image.
new_img = Image.new("RGB", (200, 100), "blue")β’ Get image format (e.g., 'JPEG').
print(img.format)
β’ Get image dimensions as a (width, height) tuple.
width, height = img.size
β’ Get pixel format (e.g., 'RGB', 'L' for grayscale).
print(img.mode)
β’ Convert image mode.
grayscale_img = img.convert("L")β’ Get a pixel's color value at (x, y).
r, g, b = img.getpixel((10, 20))
β’ Set a pixel's color value at (x, y).
img.putpixel((10, 20), (255, 0, 0))
II. Cropping, Resizing & Pasting
β’ Crop a rectangular region.
box = (100, 100, 400, 400)
cropped_img = img.crop(box)
β’ Resize an image to an exact size.
resized_img = img.resize((200, 200))
β’ Create a thumbnail (maintains aspect ratio).
img.thumbnail((128, 128))
β’ Paste one image onto another.
img.paste(another_img, (50, 50))
III. Rotation & Transformation
β’ Rotate an image (counter-clockwise).
rotated_img = img.rotate(45, expand=True)
β’ Flip an image horizontally.
flipped_img = img.transpose(Image.FLIP_LEFT_RIGHT)
β’ Flip an image vertically.
flipped_img = img.transpose(Image.FLIP_TOP_BOTTOM)
β’ Rotate by 90, 180, or 270 degrees.
img_90 = img.transpose(Image.ROTATE_90)
β’ Apply an affine transformation.
transformed = img.transform(img.size, Image.AFFINE, (1, 0.5, 0, 0, 1, 0))
IV. ImageOps Module Helpers
β’ Invert image colors.
from PIL import ImageOps
inverted_img = ImageOps.invert(img)
β’ Flip an image horizontally (mirror).
mirrored_img = ImageOps.mirror(img)
β’ Flip an image vertically.
flipped_v_img = ImageOps.flip(img)
β’ Convert to grayscale.
grayscale = ImageOps.grayscale(img)
β’ Colorize a grayscale image.
colorized = ImageOps.colorize(grayscale, black="blue", white="yellow")
β’ Reduce the number of bits for each color channel.
posterized = ImageOps.posterize(img, 4)
β’ Auto-adjust image contrast.
adjusted_img = ImageOps.autocontrast(img)
β’ Equalize the image histogram.
equalized_img = ImageOps.equalize(img)
β’ Add a border to an image.
bordered = ImageOps.expand(img, border=10, fill='black')
V. Color & Pixel Operations
β’ Split image into individual bands (e.g., R, G, B).
r, g, b = img.split()
β’ Merge bands back into an image.
merged_img = Image.merge("RGB", (r, g, b))β’ Apply a function to each pixel.
brighter_img = img.point(lambda i: i * 1.2)
β’ Get a list of colors used in the image.
colors = img.getcolors(maxcolors=256)
β’ Blend two images with alpha compositing.
# Both images must be in RGBA mode
blended = Image.alpha_composite(img1_rgba, img2_rgba)
VI. Filters (ImageFilter)
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β’ Apply a simple blur filter.
β’ Apply a box blur with a given radius.
β’ Apply a Gaussian blur.
β’ Sharpen the image.
β’ Find edges.
β’ Enhance edges.
β’ Emboss the image.
β’ Find contours.
VII. Image Enhancement (ImageEnhance)
β’ Adjust color saturation.
β’ Adjust brightness.
β’ Adjust contrast.
β’ Adjust sharpness.
VIII. Drawing (ImageDraw & ImageFont)
β’ Draw text on an image.
β’ Draw a line.
β’ Draw a rectangle (outline).
β’ Draw a filled ellipse.
β’ Draw a polygon.
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from PIL import ImageFilter
blurred_img = img.filter(ImageFilter.BLUR)
β’ Apply a box blur with a given radius.
box_blur = img.filter(ImageFilter.BoxBlur(5))
β’ Apply a Gaussian blur.
gaussian_blur = img.filter(ImageFilter.GaussianBlur(radius=2))
β’ Sharpen the image.
sharpened = img.filter(ImageFilter.SHARPEN)
β’ Find edges.
edges = img.filter(ImageFilter.FIND_EDGES)
β’ Enhance edges.
edge_enhanced = img.filter(ImageFilter.EDGE_ENHANCE)
β’ Emboss the image.
embossed = img.filter(ImageFilter.EMBOSS)
β’ Find contours.
contours = img.filter(ImageFilter.CONTOUR)
VII. Image Enhancement (ImageEnhance)
β’ Adjust color saturation.
from PIL import ImageEnhance
enhancer = ImageEnhance.Color(img)
vibrant_img = enhancer.enhance(2.0)
β’ Adjust brightness.
enhancer = ImageEnhance.Brightness(img)
bright_img = enhancer.enhance(1.5)
β’ Adjust contrast.
enhancer = ImageEnhance.Contrast(img)
contrast_img = enhancer.enhance(1.5)
β’ Adjust sharpness.
enhancer = ImageEnhance.Sharpness(img)
sharp_img = enhancer.enhance(2.0)
VIII. Drawing (ImageDraw & ImageFont)
β’ Draw text on an image.
from PIL import ImageDraw, ImageFont
draw = ImageDraw.Draw(img)
font = ImageFont.truetype("arial.ttf", 36)
draw.text((10, 10), "Hello", font=font, fill="red")
β’ Draw a line.
draw.line((0, 0, 100, 200), fill="blue", width=3)
β’ Draw a rectangle (outline).
draw.rectangle([10, 10, 90, 60], outline="green", width=2)
β’ Draw a filled ellipse.
draw.ellipse([100, 100, 180, 150], fill="yellow")
β’ Draw a polygon.
draw.polygon([(10,10), (20,50), (60,10)], fill="purple")
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