MUMBAI, India, Sept. 7 -- Intellectual Property India has published a patent application (202641064523 A) filed by Srm Institute Of Science And Technology Tiruchirappalli on May 21, 2026, for Image Based Water Quality Assessment Using Colour Analysis.

Inventors include Chandhiah S; and Dr. V. N Senthil Kumaran.

The application for the patent was published on September 04, 2026, under issue no. 36/2026.

Abstract: The present invention provides a system and method for image-based water quality assessment using colour analysis techniques. The system captures digital images of water samples and processes them through illumination normalization, noise reduction, and multi-colour space transformation to extract quantitative colour indices. These indices are utilized to estimate turbidity, contamination levels, suspended particle concentration, and algae presence without requiring laboratory equipment, chemical reagents, or physical sensors. A machine learning-based classification engine categorizes water quality into predefined safety levels and generates contamination scores with visual heatmaps highlighting abnormal spectral regions.

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