AxeCrafted wandering thoughts
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A place to write about data, software, and whatever catches my curiosity — free from the pressure to monetize or to be right. Exploration, for the simple pleasure of it.

Browse: Image Processing·Data·Cryptography·Personal

2025

Paint By Numbers - Victory At Last? · latest

After a 10-month hiatus, the paint-by-numbers project reaches its conclusion. Discover how switching to CIELab color space, leveraging morphological transformations, and refining the algorithm produced stunning results with organic shapes and natural colors.

Image Processing  ·  December 12th, 2025

Winning with Multi-Armed Bandits: Smarter Experimentation in Databricks

Learn how Multi-Armed Bandits provide a powerful alternative to static A/B testing by balancing exploration and exploitation, using Bayesian methods to adapt experiments in real time and maximize results.

Data  ·  August 18th, 2025

Simple Anomaly Detection in Databricks Using Mean and Standard Deviation

Learn how Consumidor Positivo built a simple yet effective anomaly detection system in Databricks using mean, standard deviation, and generative AI for rapid data quality monitoring, automated diagnosis, and actionable insights.

Data  ·  June 23rd, 2025

An Attempt at Paint-by-Numbers - Part 3

Explore advanced techniques for removing thin regions, detecting boundaries, and labeling regions in images to achieve a classic Paint-by-Numbers effect using Python and OpenCV. This post covers practical algorithms, code examples, and visual results for image simplification and region labeling.

Image Processing  ·  January 15th, 2025

An Attempt at Paint-by-Numbers - Part 2

Explore advanced image processing techniques to transform photos into paint-by-number artworks. This post covers morphological transformations, region analysis, and Python code optimizations to simplify complex images for creative projects.

Image Processing  ·  January 1st, 2025
2024

An Attempt at Paint-by-Numbers - Part 1

Follow a hands-on journey to create your own paint-by-numbers artwork using Python and image processing techniques. Learn how to enhance images, extract color palettes, reduce color spaces, and simulate brush effects step by step.

Image Processing  ·  November 11th, 2024
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Leonardo Machado

Some guy from Brazil. Loves his wife, cats, coffee, and data — often found trying to make sense of numbers, or cooking something questionable.