Results 31 to 40 of about 224 (49)

Rectangling irregular videos by optimal spatio-temporal warping

open access: yesComputational Visual Media, 2021
Image and video processing based on geometric principles typically changes the rectangular shape of video frames to an irregular shape. This paper presents a warping based approach for rectangling such irregular frame boundaries in space and time, i.e ...
Jin-Liang Wu, Jun-Jie Shi, Lei Zhang
doaj   +1 more source

Automatic face image annotation based on a single template with constrained warping deformation

open access: yesIET Computer Vision, 2013
In this study, an automatic face image annotation method is proposed by aligning faces with different expressions to an annotated neutral face. This work is useful in reducing tedious manual work for labelling image data in large databases.
Yang Yang, Yuehu Liu, Jianyi Liu
doaj   +1 more source

Cage Active Contours for image warping and morphing

open access: yesEURASIP Journal on Image and Video Processing, 2018
Cage Active Contours (CACs) have shown to be a framework for segmenting connected objects using a new class of parametric region-based active contours.
Jeroni Carandell   +2 more
doaj   +1 more source

rPOP: Robust PET-only processing of community acquired heterogeneous amyloid-PET data

open access: yesNeuroImage, 2022
The reference standard for amyloid-PET quantification requires structural MRI (sMRI) for preprocessing in both multi-site research studies and clinical trials.
Leonardo Iaccarino   +11 more
doaj  

A review on 3D deformable image registration and its application in dose warping

open access: yesRadiation Medicine and Protection, 2020
Deformable image registration (DIR) has been well explored in recent decades, and it is widely utilized in clinical tasks, especially dose warping. Nowadays, as deep learning (DL) develops rapidly, many DL-based methods were also applied in DIR.
Haonan Xiao, Ge Ren, Jing Cai
doaj  

Optical distortion correction considering radial and tangential distortion rates defined by optical design

open access: yesResults in Optics, 2021
This paper proposes a high-accuracy distortion correction method for optical imaging distortion mapping and computational image predistortion. Due to the establishment of the predistortion is based on the distortion evaluation in the common optical ...
Yue Liu   +7 more
doaj  

Research on Image Stitching Algorithm Based on Point-Line Consistency and Local Edge Feature Constraints

open access: yesEntropy
Image stitching aims to synthesize a wider and more informative whole image, which has been widely used in various fields. This study focuses on improving the accuracy of image mosaic and proposes an image mosaic method based on local edge contour ...
Shaokang Ma   +4 more
doaj   +1 more source

Real-Time Rendering Method of Depth-Image-Based Multiple Reference Views for Integral Imaging Display

open access: yesIEEE Access, 2019
A real-time computer-generated integral imaging (CGII) display rendering method based on depth-image-based multiple reference viewpoints (MDIBR) is presented, and good three-dimensional (3D) image quality with the high frame rate can be achieved.
Yanxin Guan   +4 more
doaj   +1 more source

dtwSat: Time-Weighted Dynamic Time Warping for Satellite Image Time Series Analysis in R

open access: yesJournal of Statistical Software, 2019
The opening of large archives of satellite data such as LANDSAT, MODIS and the SENTINELs has given researchers unprecedented access to data, allowing them to better quantify and understand local and global land change. The need to analyze such large data
Victor Maus   +3 more
doaj   +1 more source

Separable Facial Image Editing via Warping With Displacement Vectors

open access: yesIEEE Access
Recent deep learning techniques have enabled simple methods of image editing through textual instructions; however, it remains challenging to perform specific and quantitative editing.
Ryusei Nishikawa   +3 more
doaj   +1 more source

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