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Transforming Hue in Images Using Python PIL – A Tutorial

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th?q=Changing Image Hue With Python Pil - Transforming Hue in Images Using Python PIL - A Tutorial

Have you ever wondered how to change the color scheme of your images without resorting to expensive software? If so, then this tutorial on transforming hue in images using Python PIL is for you!

Python PIL, or Python Imaging Library, is a powerful tool for working with images. With it, you can easily transform different aspects of an image, including its hue. By adjusting the hue of an image, you can completely change its mood and tone. This can be especially useful for photographers or graphic designers who want to experiment with different color schemes or create a specific aesthetic.

In this tutorial, you’ll learn how to use Python PIL to transform hue in your images step-by-step. Whether you’re a beginner or an experienced programmer, this tutorial will provide you with all the information you need to get started.

So if you’re ready to take your image editing skills to the next level, be sure to read this tutorial until the end. You won’t regret it!

th?q=Changing%20Image%20Hue%20With%20Python%20Pil - Transforming Hue in Images Using Python PIL - A Tutorial
“Changing Image Hue With Python Pil” ~ bbaz


Photoshop has always been famous for its ability to manipulate colors and hues in an image. However, did you know that you can change the hue of your images using Python? Python offers a wide range of libraries that let you perform various image manipulations with ease. One such library is the Python Image Library (PIL), which enables a user to create, manipulate, and convert images in a multitude of ways. In this tutorial, we’ll be delving into how to transform hue in images using Python PIL.

What is Hue?

Hue is one of the three properties of color, along with saturation and brightness. It refers to the actual hue of the color itself. The hue is what makes the difference between green, red, yellow or any other color. All other hues can be created by manipulating different levels of primary colors like red, blue, and green.

Comparison with Photoshop

While both Python PIL and Photoshop can alter the hue of an image, there is one significant difference between them. Photoshop allows the user to select only one particular color range to change the hue, while PIL can alter the entire image’s hue simultaneously. This means you can change the hue of the entire image to adjust the color balance of the picture.

Installing Python PIL

Before you begin working with Python PIL, you need to install it. You can do this easily by running the command “!pip install pillow” on your command prompt or terminal if you’re on Mac or Linux.

Reading an Image

The first step in transforming hue in an image using Python is to read the image. With Python PIL, when reading the image, the library opens it in a format suitable for manipulation i.e., RGBA.

Transforming Hue

The python PIL library transforms hues through a color space conversion method that starts with image_rgb = image.convert(‘RGB’).

Image Conversion to Colors

After converting the image to RGB, the values of the pixels get filtered through the numpy array. You can then manipulate this numpy array to change the hue of the image.

Numpy Array Manipulation

The numpy array manipulation function is where all of the magic happens. Here, we can adjust the hue of an image by selecting which color channels we want to retain for the image.

Writing/Exporting the Image

Once the changes have been made, you’ll need to save the altered image file. Python PIL makes this easy by providing you with simple commands for saving an image in various formats including jpg, png, and bmp.

Comparison Table

Tool Advantages Disadvantages
Python PIL – Free and open-source
– Can edit the entire image at once
– Lightweight and fast processing time
– Manipulations may not have as high an image quality as Photoshop
– Less intuitive interface compared to Photoshop
Photoshop – Robust and feature-rich
– High-quality image manipulations
– User-friendly interface
– Expensive
– Requires a more powerful system to run smoothly
– Limited ability to edit colors except with complex masks and selections


In conclusion, Python PIL is an excellent tool for transforming hue in images. Although Photoshop remains the most commonly used program for photo editing, PIL offers an efficient and lightweight way of changing the hue of an image. The ability to manipulate entire images at once makes PIL a great choice for batch processing projects. With Python’s easy-to-learn syntax and vast libraries, it isn’t hard to understand why more people are switching to PIL for their image processing needs.

Thank you for taking the time to read through our tutorial on transforming hue in images using Python PIL. We hope that you found it informative and helpful in your journey towards exploring image processing with Python.

As we have outlined in this tutorial, Python PIL offers a powerful toolset for manipulating images, and transforming hue is just one of the many ways in which you can alter the appearance of digital images. With a little creativity and experimentation, you can use these tools to create stunning visual effects and take your image processing skills to the next level.

If you have any questions or comments about our tutorial, or if you have any additional resources or tips that you would like to share with our community of readers, please feel free to leave a comment below. We always love hearing from our readers and learning how our tutorials have helped them achieve their goals.

People also ask about Transforming Hue in Images Using Python PIL – A Tutorial:

  1. What is PIL in Python?
  2. PIL stands for Python Imaging Library. It is a library that adds support for opening, manipulating, and saving many different image file formats in Python.

  3. How do I install PIL in Python?
  4. You can install PIL using pip, the package installer for Python. Simply type pip install pillow in your terminal or command prompt.

  5. What is hue in image processing?
  6. Hue is a term used in image processing to describe the overall color of an image. It refers to the dominant wavelength of light that is being reflected by the object in the image.

  7. How can I transform the hue of an image using PIL?
  8. You can transform the hue of an image using the ImageOps module in PIL. This module provides several functions for transforming images, including the colorize function which can shift the hue of an image. Here’s an example:

    from PIL import Image, ImageOps

    # Open the image
    im =

    # Transform the hue of the image
    im = ImageOps.colorize(im, black=red, white=yellow)

    # Save the transformed image

  9. Can I use PIL to apply other types of image transformations?
  10. Yes, PIL provides many functions for transforming images, including resizing, cropping, rotating, and more. You can find more information about these functions in the PIL documentation.