1. A new method of hybrid time window embedding with transformer-based traffic data classification in IoT-networked environment

   • Rafał Kozik
   • Marek Pawlicki
   • Michał Choraś

   Original Article Open access 12 May 2021 Pages: 1441 - 1449

   

2. Savitzky–Golay filter energy features-based approach to face recognition using symbolic modeling

   • Vishwanath C. Kagawade
   • Shanmukhappa A. Angadi

   Original Article 27 May 2021 Pages: 1451 - 1473

   

3. Testing the randomness of shares in color visual cryptography

   • Leszek J. Chmielewski
   • Mariusz Nieniewski
   • Arkadiusz Orłowski

   Original Article Open access 24 June 2021 Pages: 1475 - 1487

   

4. Assessing task understanding in remote ultrasound diagnosis via gesture analysis

   • Edgar Rojas-Muñoz
   • Juan P. Wachs

   Original Article 13 September 2021 Pages: 1489 - 1500

   

5. Hybrid domain adaptation for sensor-based human activity recognition in a heterogeneous setup with feature commonalities

   • Aria Ghora Prabono
   • Bernardo Nugroho Yahya
   • Seok-Lyong Lee

   Theoretical Advances 16 June 2021 Pages: 1501 - 1511

   

6. Domain adaption based on source dictionary regularized RKHS subspace learning

   • Wenjie Lei
   • Zhengming Ma
   • Wenxu Gao

   Theoretical Advances 17 June 2021 Pages: 1513 - 1532

   

7. Chinese font migration combining local and global features learning

   • Yalin Miao
   • Huanhuan Jia
   • Kaixu Tang

   Theoretical Advances 25 June 2021 Pages: 1533 - 1547

   

8. DroneRTEF:development of a novel adaptive framework for railroad track extraction in drone images

   • Aradhya Saini
   • Dharmendra Singh

   Theoretical Advances 29 June 2021 Pages: 1549 - 1568

   

9. Enhancing performance and user convenience of multi-biometric verification systems

   • Md S. Hossain
   • Vir V. Phoha

   Theoretical Advances 16 July 2021 Pages: 1569 - 1582

   

10. Multiple circle detection in images: a simple evolutionary algorithm approach and a new benchmark of images

    • Miguel R. González
    • Miguel E. Martínez
    • Carlos A. Brizuela

    Theoretical Advances 17 July 2021 Pages: 1583 - 1603

    

11. Clustering and classification with inertia weight and elitism-based particle swarm optimization

    • T. Mathi Murugan
    • E. Baburaj

    Theoretical Advances 17 July 2021 Pages: 1605 - 1621

    

12. Iterative feature refinement with network-driven prior for image restoration

    • Jinjie Zhou
    • Miaomiao Meng
    • Yinghong Zhang

    Theoretical Advances 19 July 2021 Pages: 1623 - 1634

    

13. Vehicle object detection method based on candidate region aggregation

    • Luyang Zhang
    • Haitao Wang
    • Hailong Wang

    Theoretical Advances 24 July 2021 Pages: 1635 - 1647

    

14. On measuring and employing texture directionality for image classification

    • Manil Maskey
    • Timothy S. Newman

    Theoretical Advances 27 July 2021 Pages: 1649 - 1665

    

15. HSIC-based affinity measure for learning on graphs

    • Rakesh Kumar Yadav
    • Abhishek
    • S. Venkatesan

    Theoretical Advances 31 July 2021 Pages: 1667 - 1683

    

16. Superpixel/voxel medical image segmentation algorithm based on the regional interlinked value

    • Lingling Fang
    • Xin Wang
    • Mengyi Wang

    Theoretical advances 19 August 2021 Pages: 1685 - 1698

    

17. Unrestricted deep metric learning using neural networks interaction

    • Soheil Mehralian
    • Mohammad Teshnehlab
    • Babak Nasersharif

    Theoretical advances 27 August 2021 Pages: 1699 - 1711

    

18. Dimensionality reduction based on multi-local linear regression and global subspace projection distance minimum

    • Haidong Huang
    • Zhengming Ma
    • Huibin Wu

    Theoretical advances 29 August 2021 Pages: 1713 - 1730

    

19. Batch and online variational learning of hierarchical Dirichlet process mixtures of multivariate Beta distributions in medical applications

    • Narges Manouchehri
    • Nizar Bouguila
    • Wentao Fan

    Theoretical advances 06 September 2021 Pages: 1731 - 1744

    

20. TRFH: towards real-time face detection and head pose estimation

    • Shicun Chen
    • Yong Zhang
    • Boyue Wang

    Theoretical advances Open access 12 September 2021 Pages: 1745 - 1755

    

21. ChoiceNet: CNN learning through choice of multiple feature map representations

    • Farshid Rayhan
    • Aphrodite Galata
    • Tim F. Cootes

    Short Paper Open access 11 July 2021 Pages: 1757 - 1767

    

22. Video-based person re-identification by semi-supervised adaptive stepwise learning

    • Ding Ma
    • Yong Zhou
    • Hao Chen

    Short Paper 17 August 2021 Pages: 1769 - 1776

    

23. Depth and edge auxiliary learning for still image crowd density estimation

    • Sifan Peng
    • Baoqun Yin
    • Luyang Wang

    Short paper 20 August 2021 Pages: 1777 - 1792

    

24. Multi-resolution dictionary collaborative representation for face recognition

    • Zhen Liu
    • Xiao-Jun Wu
    • Zhenqiu Shu

    Short Paper 21 August 2021 Pages: 1793 - 1803

    

25. Outlier removal in biomaterial image segmentations using a non-stationary Bayesian learning

    • Wahyudin P. Syam
    • Panorios Benardos
    • David T. Branson III

    Industrial and commercial application 28 June 2021 Pages: 1805 - 1824

    

26. KAGO: an approximate adaptive grid-based outlier detection approach using kernel density estimate

    • Panthadeep Bhattacharjee
    • Ankur Garg
    • Pinaki Mitra

    Industrial and Commercial Application 12 July 2021 Pages: 1825 - 1846

    

27. A robust method for image stitching

    • Matti Pellikka
    • Valtteri Lahtinen

    Industrial and Commercial Application 27 July 2021 Pages: 1847 - 1858

    

28. Proposing a new local density estimation outlier detection algorithm: an empirical case study on flow pattern experiments

    • Kumars Mahmoodi
    • Mohammad Javad Ketabdari
    • Mohammad Vaghefi

    Industrial and commercial application 31 August 2021 Pages: 1859 - 1872

    

29. Correction to: Outlier removal in biomaterial image segmentations using a non-stationary Bayesian learning

    • Wahyudin P. Syam
    • Panorios Benardos
    • David T. Branson III

    Correction 26 July 2021 Pages: 1873 - 1873