Papers › Multi-task Learning for Camera Calibration

Multi-task Learning for Camera Calibration

22 Nov 2022arXiv:2211.12432archive 2025-07-28

Talha Hanif Butt, Murtaza Taj

For a number of tasks, such as 3D reconstruction, robotic interface, autonomous driving, etc., camera calibration is essential. In this study, we present a unique method for predicting intrinsic (principal point offset and focal length) and extrinsic (baseline, pitch, and translation) properties from a pair of images. We suggested a novel method where camera model equations are represented as a neural network in a multi-task learning framework, in contrast to existing methods, which build a comprehensive solution. By reconstructing the 3D points using a camera model neural network and then using the loss in reconstruction to obtain the camera specifications, this innovative camera projection loss (CPL) method allows us that the desired parameters should be estimated. As far as we are aware, our approach is the first one that uses an approach to multi-task learning that includes mathematical formulas in a framework for learning to estimate camera parameters to predict both the extrinsic and intrinsic parameters jointly. Additionally, we provided a new dataset named as CVGL Camera Calibration Dataset [1] which has been collected using the CARLA Simulator [2]. Actually, we show that our suggested strategy out performs both conventional methods and methods based on deep learning on 6 out of 10 parameters that were assessed using both real and synthetic data. Our code and generated dataset are available at https://github.com/thanif/Camera-Calibration-through-Camera-Projection-Loss.

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thanif/Camera-Calibration-through-Camera-Projection-Loss officialmentioned in papermentioned on GitHubtf report
thanif/CPL officialmentioned on GitHubtf report

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Tasks

3D ReconstructionAutonomous DrivingCamera CalibrationMulti-Task Learning

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Methods

CARLAEntropy RegularizationPPO

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