Results 21 to 30 of about 2,464,622 (250)

Low-resolution human pose estimation

, 2022
Human pose estimation has achieved significant progress on images with high imaging resolution. However, low-resolution imagery data bring nontrivial challenges which are still under-studied. To fill this gap, we start with investigating existing methods
Ge, Shuzhi, Zhang, Feng, ZHU, XIATIAN, Wang, Chen   +3 more
core   +1 more source

A method for predicting marker tracking error [PDF]

, 2007
Many Augmented Reality (AR) applications use marker-based vision tracking systems to recover camera pose by detecting one or more planar landmarks. However, most of these systems do not interactively quantify the accuracy of the pose they calculate ...
Julier, SJ, Simon J. Julier, Russell M. Freeman, Steed, AJ, Anthony J. Steed, Freeman, RM   +5 more
core   +1 more source

An Accurate and Stable Pose Estimation Method Based on Geometry for Port Hoisting Machinery

IEEE Access, 2019
As a visual measurement method, photogrammetry is widely used in engineering measurement fields. Photogrammetry must first complete camera pose estimation.
Qi Wang, Zhangyan Zhao
doaj   +1 more source

Validity of AI-Based Gait Analysis for Simultaneous Measurement of Bilateral Lower Limb Kinematics Using a Single Video Camera

Sensors, 2023
Accuracy validation of gait analysis using pose estimation with artificial intelligence (AI) remains inadequate, particularly in objective assessments of absolute error and similarity of waveform patterns.
Takumi Ino, Mina Samukawa, Tomoya Ishida, Naofumi Wada, Yuta Koshino, Satoshi Kasahara, Harukazu Tohyama   +6 more
doaj   +1 more source

EKFPnP: extended Kalman filter for camera pose estimation in a sequence of images

IET Image Processing, 2020
In real‐world applications the perspective‐n‐point (PnP) problem should generally be applied to a sequence of images which a set of drift‐prone features are tracked over time.
Mohammad Amin Mehralian, Mohsen Soryani
doaj   +1 more source

Accurate Line-Based Relative Pose Estimation With Camera Matrices

IEEE Access, 2020
While most monocular structure-from-motion frameworks rely on sparse keypoints, it has long been acknowledged that lines represent an alternative, higher-order feature with high accuracy, repeatability, and abundant availability in man-made environments.
Peihong Yu, Cen Wang, Zhirui Wang, Jingyi Yu, Laurent Kneip   +4 more
doaj   +1 more source

Event-Based Camera Tracker by ∇_tNeRF

IEEE Access, 2023
When a camera travels across a 3D world, only a fraction of pixel value changes; an event-based camera observes the change as sparse events. How can we utilize sparse events for efficient recovery of the camera pose?
Mana Masuda, Yusuke Sekikawa, Hideo Saito   +2 more
doaj   +1 more source

Camera Pose Estimation for planar configurations

, 2022
LAUREA MAGISTRALEStructure from Motion (SfM) è il processo di stima di una struttura 3D e della posa della camera da un insieme di immagini 2D. Supponendo che le immagini siano prese da camere calibrate che inquadrano la stessa scena, permettendo una ...
GALLI, FILIPPO
core  

Content based image pose manipulation [PDF]

, 2009
This thesis proposes the application of space-frequency transformations to the domain of pose estimation in images. This idea is explored using the Wavelet Transform with illustrative applications in pose estimation for face images, and images of planar ...
Begley, Seán
core   +2 more sources

LightHand99K: A Synthetic Dataset for Hand Pose Estimation With Wrist-Worn Cameras

IEEE Access
Although hand-pose estimation using external camera systems has made significant progress driven by large annotated datasets, wrist-worn camera-based hand-pose estimation offers unique advantages owing to its ability to capture nearby images.
Jeongho Lee, Changho Kim, Jaeyun Kim, Seon Ho Kim, Younggeun Choi, Sang-Il Choi   +5 more
doaj   +1 more source