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Should you normalize RGB values by 255 or 256?

This technical article explores the subtle but important differences between normalizing RGB values by 255 versus 256, discussing the mathematical implications and practical considerations for developers working with image processing and computer vision. The discussion on Hacker News generated significant engagement, indicating the topic's relevance to the developer community.

Background

Normalization of RGB values is a fundamental preprocessing step in computer vision and image processing, where pixel values (typically 0-255) are scaled to a 0-1 range for machine learning models.

Source
Hacker News (RSS)
Published
Jun 2, 2026 at 01:37 AM
Score
6.0 / 10