MUMBAI, India, Aug. 12 -- Intellectual Property India has published a patent application (202421072061 A) filed by Imageprovision Technology Private Limited on September 24, 2024, for Circularity-Invariant Method For Accurately Determining The Perimeter Of A Particle In A Digital Image.
Inventors include Sandeep Arvind Kulkarni; Neha Sagar Deshmukh; Anu Shivanand Raje; and Mihir Milind Limaye.
The application for the patent was published on August 07, 2026, under issue no. 32/2026.
Abstract: Disclosed herein is a circularity-invariant method for accurately determining the perimeter of a particle in a digital image. Conventional pixel-based perimeter estimation methods overestimate curved boundaries due to rigid assignment of diagonal pixel distances (v2), leading to errors in circularity and derived shape parameters. The disclosed method segments the particle, identifies boundary pixels, classifies them as orthogonal or diagonal, and applies an adaptive corrective factor defined as 1 + (D/X × 0.414), where D is the number of diagonal pixels and X is the total boundary pixels. This adjustment mitigates systematic overestimation, ensuring accurate, rotation-invariant perimeter estimation. The method improves calculation of circularity, convexity and high sensitivity circularity (HSC). It is computationally efficient, resolution-independent, and suitable for integration into industrial imaging workflows across materials science, pharmaceuticals, and biomedical applications.
Disclaimer: Curated by HT Syndication.
