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 8 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.

Camera calibration is a necessity in various tasks including 3D reconstruction, hand-eye coordination for a robotic interaction, autonomous driving, etc. In this work we propose a novel method to predict extrinsic (baseline, pitch, and translation), intrinsic (focal length and principal point offset) parameters using an image pair. Unlike existing methods, instead of designing an end-to-end solution, we proposed a new representation that incorporates camera model equations as a neural network in multi-task learning framework. We estimate the desired parameters via novel camera projection loss (CPL) that uses the camera model neural network to reconstruct the 3D points and uses the reconstruction loss to estimate the camera parameters. To the best of our knowledge, ours is the first method to jointly estimate both the intrinsic and extrinsic parameters via a multi-task learning methodology that combines analytical equations in learning framework for the estimation of camera parameters. We also proposed a novel dataset using CARLA Simulator. Empirically, we demonstrate that our proposed approach achieves better performance with respect to both deep learning-based and traditional methods on 8 out of 10 parameters evaluated using both synthetic and real data. Our code and generated dataset are available at https://github.com/thanif/Camera-Calibration-through-Camera-Projection-Loss.

监测草原的健康和活力对于告知管理决策至关优化农业应用中的旋转放牧的态度至关重要。为了利用饲料资源，提高土地生产力，我们需要了解牧场的增长模式，这在最先进的状态下即可。在本文中，我们建议部署一个机器人团队来监测一个未知的牧场环境的演变，以实现上述目标。为了监测这种环境，通常会缓慢发展，我们需要设计一种以低成本在大面积上快速评估环境的策略。因此，我们提出了一种集成管道，包括数据综合，深度神经网络训练和预测以及一个间歇地监测牧场的多机器人部署算法。具体而言，使用与ROS Gazebo的新型数据综合耦合的专家知识的农业数据，我们首先提出了一种新的神经网络架构来学习环境的时空动态。这种预测有助于我们了解大规模上的牧场增长模式，并为未来做出适当的监测决策。基于我们的预测，我们设计了一个用于低成本监控的间歇多机器人部署策略。最后，我们将提议的管道与其他方法进行比较，从数据综合到预测和规划，以证实我们的管道的性能。

在本文中，我们探索如何在互联网图像的数据和型号上构建，并使用它们适应机器人视觉，而无需任何额外的标签。我们提出了一个叫做自我监督体现的主动学习（密封）的框架。它利用互联网图像培训的感知模型来学习主动探索政策。通过3D一致性标记此探索策略收集的观察结果，并用于改善感知模型。我们构建并利用3D语义地图以完全自我监督的方式学习动作和感知。语义地图用于计算用于培训勘探政策的内在动机奖励，并使用时空3D一致性和标签传播标记代理观察。我们证明了密封框架可用于关闭动作 - 感知循环：通过在训练环境中移动，改善预读的感知模型的对象检测和实例分割性能，并且可以使用改进的感知模型来改善对象目标导航。

For an autonomous agent to fulfill a wide range of user-specified goals at test time, it must be able to learn broadly applicable and general-purpose skill repertoires. Furthermore, to provide the requisite level of generality, these skills must handle raw sensory input such as images. In this paper, we propose an algorithm that acquires such general-purpose skills by combining unsupervised representation learning and reinforcement learning of goal-conditioned policies. Since the particular goals that might be required at test-time are not known in advance, the agent performs a self-supervised "practice" phase where it imagines goals and attempts to achieve them. We learn a visual representation with three distinct purposes: sampling goals for self-supervised practice, providing a structured transformation of raw sensory inputs, and computing a reward signal for goal reaching. We also propose a retroactive goal relabeling scheme to further improve the sample-efficiency of our method. Our off-policy algorithm is efficient enough to learn policies that operate on raw image observations and goals for a real-world robotic system, and substantially outperforms prior techniques. * Equal contribution. Order was determined by coin flip.