https://yedhu.me/Software Developer • Reader • Blogger 2025-09-27T17:17:05+05:30 Yedhu Krishnan https://yedhu.me/ Jekyll © 2025 Yedhu Krishnan /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2022-10-28T05:30:00+05:30 2022-10-28T05:30:00+05:30 https://yedhu.me/posts/image-manipulation-in-python/ Yedhu Krishnan

If you haven’t read the last post in the series, please read it here: The R, G, and B in an Image. Let’s see how we increase/decrease the brightness or contrast of an image and some other transformations. We already know that images are NumPy arrays in Python. All we need to do now is to perform matrix operations. Let’s start by reading a greyscale image. Image Courtesy: pexels.com import ...

2019-10-08T05:30:00+05:30 2019-10-08T05:30:00+05:30 https://yedhu.me/posts/the-r-g-and-b-in-an-image/ Yedhu Krishnan

If you haven’t read the last post in the series, please read it here: Introduction to Digital Image Processing in Python. A typical color image consists of three color channels: red, green and blue. Each color channel has 8 bits and can represent 256 distinct values. Using a combination of all three channels, we can create 256 x 256 x 256 colors, which is around 16-million colors. You might ha...

2019-09-29T05:30:00+05:30 2019-09-29T05:30:00+05:30 https://yedhu.me/posts/introduction-to-digital-image-processing-in-python/ Yedhu Krishnan

If you haven’t read the first post in the series, read it here: Lessons on Digital Image Processing. In this second part, let’s write some actual code. We will be writing all our code in Python. Python makes processing and manipulating images very easy. NumPy and SciPy packages available for Python help us to perform scientific computing, mainly operations on matrices, which is of interest to...

2018-11-19T05:30:00+05:30 2018-11-19T05:30:00+05:30 https://yedhu.me/posts/factfulness/ Yedhu Krishnan

Step-by-step, year-by-year, the world is improving. Not on every single measure every single year, but as a rule. Though the world faces huge challenges, we have made tremendous progress. This is the fact-based worldview. Factfulness is one book I would recommend to anyone who wants to have a clear perspective about the world based on facts. It was written by Hans Rosling; a medical doctor, p...

2018-03-18T22:31:00+05:30 2018-03-18T22:31:00+05:30 https://yedhu.me/posts/lessons-on-digital-image-processing-1/ Yedhu Krishnan

This is the first one of a series of posts I am planning to write about image processing. I intend this post for students who are new to the concepts of image processing. The code snippets, if there are any, will be in simple Python. If you want to learn Python, there is an interactive tutorial here. You can also check out Python tutorial on the official website. There is always room for impro...