Akshay Bharadwaj

Akshay Bharadwaj

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A list of all the posts and pages found on the site. For you robots out there, there is an XML version available for digesting as well.

Pages

Posts

Future Blog Post

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This post will show up by default. To disable scheduling of future posts, edit config.yml and set future: false.

Blog Post number 4

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Blog Post number 3

less than 1 minute read

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Blog Post number 2

less than 1 minute read

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Headings are cool

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Aren’t headings cool?

Blog Post number 1

less than 1 minute read

Published:

This is a sample blog post. Lorem ipsum I can’t remember the rest of lorem ipsum and don’t have an internet connection right now. Testing testing testing this blog post. Blog posts are cool.

Headings are cool

You can have many headings

Aren’t headings cool?

publications

Implementation of an Ethernet Bridge Using Avalon Memory-Mapped Interface

Published in Emerging Research in Electronics, Computer Science and Technology: Proceedings of International Conference, ICERECT 2012, 2013

Implementation of an Ethernet bridge using the Avalon memory-mapped interface.

Recommended citation: Bharadwaj, A. S. & Mankkadan, D. (2013). "Implementation of an Ethernet Bridge Using Avalon Memory-Mapped Interface." Emerging Research in Electronics, Computer Science and Technology: Proceedings of International Conference, ICERECT 2012. Springer India, New Delhi. pp. 407-412.

Detection of Microcalcification with Top-Hat Transform and the Gibbs Random Fields

Published in 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2015

A novel CAD method combining fuzzy C-means clustering, top-hat transform, watershed segmentation, and Gibbs random fields to detect microcalcifications in digital mammograms, achieving a 94.4% detection rate.

Recommended citation: Bharadwaj, A. S. & Celenk, M. (2015). "Detection of Microcalcification with Top-Hat Transform and the Gibbs Random Fields." 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). Milan, Italy. p. 6382.
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A Real-time Relative Navigation Capability for Multi-copter Collision Avoidance

Published in Proceedings of the 2016 International Technical Meeting of The Institute of Navigation, 2016

Multi-copter platforms equipped with GNSS, inertial sensors, and communication links implementing relative navigation and collision avoidance algorithms on embedded ROS processors.

Recommended citation: Kastelein, M., Gilabert, R., Schultz, A., Bharadwaj, A., Shiflett, K., & Uijt de Haag, M. (2016). "A Real-time Relative Navigation Capability for Multi-copter Collision Avoidance." Proceedings of the 2016 International Technical Meeting of The Institute of Navigation. pp. 657-663.
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A Navigation and Mapping Method for UAS during Under-the-Canopy Forest Operations

Published in 2016 IEEE/ION Position, Location and Navigation Symposium (PLANS), 2016

A simultaneous navigation and mapping (SNAM) method for multi-copter UAS operating in GNSS-degraded forest environments, using tightly-coupled GNSS/IMU and multi-scanner ICP-based mapping.

Recommended citation: Schultz, A., Gilabert, R., Bharadwaj, A., Uijt de Haag, M., & Zhu, Z. (2016). "A Navigation and Mapping Method for UAS during Under-the-Canopy Forest Operations." 2016 IEEE/ION Position, Location and Navigation Symposium (PLANS). Savannah, GA. pp. 739-746. doi:10.1109/PLANS.2016.7479768
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Small-UAS Navigation using 3D Imager and Infrared Camera in Structured Environments

Published in 2016 IEEE/ION Position, Location and Navigation Symposium (PLANS), 2016

A GNSS-denied navigation and thermal mapping method integrating depth imagery from a 3D TOF imager and LWIR camera with an IMU for autonomous small-UAS operation in maintenance tunnels.

Recommended citation: Bharadwaj, A., Schultz, A., Gilabert, R., Huff, J., & Uijt de Haag, M. (2016). "Small-UAS Navigation using 3D Imager and Infrared Camera in Structured Environments." 2016 IEEE/ION Position, Location and Navigation Symposium (PLANS). Savannah, GA. pp. 599-606. doi:10.1109/PLANS.2016.7479751
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Keynote: Navigating Small-UAS in Tunnels for Maintenance and Surveillance Operations

Published in Proceedings of the ION 2017 Pacific PNT Meeting, 2017

Keynote paper on autonomous small-UAS navigation in tunnel environments for maintenance and surveillance operations.

Recommended citation: Bharadwaj, A. S. & Uijt de Haag, M. (2017). "Keynote: Navigating Small-UAS in Tunnels for Maintenance and Surveillance Operations." Proceedings of the ION 2017 Pacific PNT Meeting. pp. 1065-1076.

Methods and Apparatuses for Detection of Abnormalities in Low-Contrast Images

Published in US Patent Application Publication (US20180053297A1), Ohio University, 2018

US Patent Application (US20180053297A1) for a computer-implemented method detecting abnormalities in low-contrast medical images using image segmentation, Gibbs random field clique analysis, and network-based delivery.

Recommended citation: Celenk, M. & Bharadwaj, A. S. (2018). "Methods and Apparatuses for Detection of Abnormalities in Low-Contrast Images." US Patent Application Publication No. US 2018/0053297 A1. Filed Aug. 11, 2017.
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APC2Mesh: Bridging the gap from occluded building façades to full 3D models

Published in ISPRS Journal of Photogrammetry and Remote Sensing, 2024

A method integrating point completion into a 3D mesh reconstruction pipeline to generate high-fidelity digital twin models of urban buildings from occluded airborne LiDAR point clouds.

Recommended citation: Akwensi, P. H., Bharadwaj, A., & Wang, R. (2024). "APC2Mesh: Bridging the gap from occluded building façades to full 3D models." ISPRS Journal of Photogrammetry and Remote Sensing.
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Points2Model: A Neural-Guided 3D Building Wireframe Reconstruction from Airborne LiDAR Point Clouds

Published in International Journal of Digital Earth, 2025

A neural-guided pipeline for reconstructing 3D building wireframe models from airborne LiDAR point clouds, addressing façade/roof occlusions, point density variations, and noise.

Recommended citation: Akwensi, P. H., Bharadwaj, A., & Wang, R. (2025). "Points2Model: A Neural-Guided 3D Building Wireframe Reconstruction from Airborne LiDAR Point Clouds." International Journal of Digital Earth. 18(1), 2458682.
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Cost-Effective Mapping Platform to Generate HD-Maps for Autonomous Vehicles and Digital Twins

Published in University of Calgary, Schulich School of Engineering, 2026

Ph.D. dissertation on a cost-effective mobile mapping system for HD-map generation, covering photogrammetric camera calibration, learning-based LiDAR–camera calibration, and neural implicit LiDAR–inertial odometry.

Recommended citation: Bharadwaj, A. S. (2026). "Cost-Effective Mapping Platform to Generate HD-Maps for Autonomous Vehicles and Digital Twins." Ph.D. Dissertation, University of Calgary. doi:10.11575/PRISM/51522
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Beyond Checkerboards: Advantages of Photogrammetric Camera Calibration for Robust 3D Vision and Novel-View Generation

Published in Remote Sensing, 2026

Revisits intrinsic camera calibration through photogrammetric self-calibration (PSC), showing it consistently outperforms checkerboard calibration for SfM, visual SLAM, and novel-view synthesis.

Recommended citation: Bharadwaj, A. & Lichti, D. D. (2026). "Beyond Checkerboards: Advantages of Photogrammetric Camera Calibration for Robust 3D Vision and Novel-View Generation." Remote Sensing. 18(13), 2220.
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research

Detection of Abnormalities in Medical Images

Early breast cancer detection: A multi-stage CAD pipeline using top-hat transform, Gibbs random fields, and fuzzy clustering to detect microcalcifications in mammograms (94.4% detection rate). US Patent filed.

talks

teaching