Accurate and Automatic Extrinsic Calibration for a Monocular Camera and Heterogenous 3D LiDARs

Li, Xingxing; He, Feiyang; Li, Shengyu; Zhou, Yuxuan; Xia, Chunxi; Wang, Xuanbin

doi:10.1109/jsen.2022.3189041

“…It estimates extrinsic parameters based on point-to-point distance using the least squares method. Li et al [18] suggested a method based on a checkerboard with four circular holes. In this method, the centers of the holes are designed to be the same as the centers of the checkerboard rectangles.…”

Section: Two-dimensional Object-based Approachmentioning

confidence: 99%

“…It estimates extrinsic parameters based on these correspondences using the standard PnP and nonlinear optimization with the reprojection error. Yan et al [20] proposed a method that uses a checkerboard plane with four circular holes similar to [18]. This method detects the centers of the four holes in point clouds based on depth discontinuities and those in images based on the calibration board size.…”

Section: Two-dimensional Object-based Approachmentioning

confidence: 99%

“…In particular, the proposed method uses a novel evaluation criterion based on the dissimilarity of 3D lines to select the most appropriate calibration result. Additionally, previous methods have the limitation that the shape of the calibration object is challenging to manufacture [16][17][18][19][20][21][22][23]. To mitigate this limitation, this paper proposes a simple calibration object that is easy to make and convenient to carry because it consists of two small planes with ChArUco (Checkerboard + ArUco) patterns on them.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Camera–LiDAR Calibration Using Iterative Random Sampling and Intersection Line-Based Quality Evaluation

Yoo

¹

,

Jung

²

,

Jung

³

et al. 2024

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

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“…Subsequently, the relative offset between sensors is determined by aligning the set of centers obtained from each sensor. Li et al adopt a similar approach by using a checkerboard with four holes [23]. Fan et al propose a two-stage calibration method using an auxiliary device with distinctive geometric features [24].…”

Section: Related Workmentioning

confidence: 99%

Ca2Lib: Simple and Accurate LiDAR-RGB Calibration Using Small Common Markers

Giacomini

¹

,

Brizi

²

,

Giammarino

³

et al. 2024

Sensors

4

0

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Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

“…Moreover, these network models require high costs in producing training data. Non-network-based methods rely on customizing complex calibration blocks [16][17][18]. Examples include computer numerical control (CNC) machining.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional colour reconstruction of aviation spiral bevel gear tooth surface through fusion of image and point cloud information

Zhou¹,

Chen²,

Xia³

et al. 2024

Meas. Sci. Technol.

1

0

Get access via publisher Add to dashboard Cite

Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.

show abstract

Accurate and Automatic Extrinsic Calibration for a Monocular Camera and Heterogenous 3D LiDARs

Cited by 23 publications

References 22 publications

Camera–LiDAR Calibration Using Iterative Random Sampling and Intersection Line-Based Quality Evaluation

Camera–LiDAR Calibration Using Iterative Random Sampling and Intersection Line-Based Quality Evaluation

Ca2Lib: Simple and Accurate LiDAR-RGB Calibration Using Small Common Markers

Three-dimensional colour reconstruction of aviation spiral bevel gear tooth surface through fusion of image and point cloud information

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