Content rating
Everyone
10+
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Content rating
Everyone
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About this app

Designed to assist in obtaining the 2D Form and Angularity parameters of Coarse Aggregates, FormaG aims to serve educational, research, and professional activities related to civil and heavy construction.

The FormaG has two modules:

The 2D Form module estimates the length and width of the particle. The App uses Principal Component Analysis (PCA) to identify the direction of greatest variance (pixels most spread along the contour). With the main direction, the particle is rotated, and the largest dimension (length) is calculated by the difference between the smallest and largest horizontal coordinates. With the difference between the smallest and largest vertical coordinates, the particle width is measured.

The Angularity module measures a 2D angularity index based on the equivalent ellipse method. Here each particle has an ellipse fitted to its contour using the least squares method.
Obtaining the 2D Form and Angularity parameters of Coarse Aggregates
Updated on
Jun 18, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
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  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

- Improved PDF Reports: Now including City and State information for better organization.
- Transparency Update: Added a new menu option to easily access our Terms of Use and Privacy Policy at any time.
- App Improvements: Implemented anonymous data collection to enhance your experience.
- Optimized SplashScreen for a smoother startup experience.
Content rating
Everyone
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App support

About the developer
Otávio José de Freitas Gomes
otavio04g.dev@gmail.com
Brazil

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