The Hong Kong Polytechnic University (PolyU)

2D_3D_Palmprint Database


Palmprint has proved to be one of the most unique and stable biometric characteristics. Almost all the current palmprint recognition techniques capture the two dimensional (2D) image of the palm surface and use it for feature extraction and matching. Although 2D palmprint recognition can achieve high accuracy, the 2D palmprint images are relatively easy to be counterfeited and much three dimensional (3D) depth information is lost in the imaging process. 3D Palmprint is a good choice to overcome these flaws.

The Biometric Research Centre (UGC/CRC) at The Hong Kong Polytechnic University has developed a real time 3D palmprint capture device, and has used it to construct a large-scale 3D palmprint database. To advance research and to provide researchers working in the area of 3D palmprint recognition a platform to compare the effectiveness of 3D palmprint recognition algorithms, we intend to publish our 3D palmprint database, making it freely available for academic, noncommercial uses.


(a) The outlook of the 3D palmprint image acquisition device; (b) The device is being used to collect 3D palmprint image samples.

Description of the PolyU 3D Palmprint Database:

The PolyU 3D Palmprint Database contains 8000 samples collected from 400 different palms. Twenty samples from each of these palms were collected in two separated sessions, where 10 samples were captured in each session, respectively. The average time interval between the two sessions is one month. Each sample contains a 3D ROI (region of interest) and its corresponding 2D ROI. Each 3D ROI is recorded by a binary file which contains 128*128 float values denoting the depth infromation of the palmprint to a reference plane, where each 2D ROI is recorded by a BMP format image file. The 3D ROIs are stored in the folder, "Sub3D", and labeled as "Sub3D_I_M_N.dat" or "Sub3D_II_M_N.dat", where "I" indicates the first session, "II" indicates the second session, "M" is the unique palm identifier (range from 1 to 550, some numbers are absent), and "N" is the index of each palm (range from 0 to 9). The 2D ROIs are stored in the folder "Sub2D", and labeled as "Sub2D_I_M_N.bmp" or "Sub2D_II_M_N.bmp" which are one-to-one corresponding to their 3D ROIs.

Related Publication:

1.    W. Li, D. Zhang, L. Zhang, G. Lu, and J. Yan, "Three Dimensional Palmprint Recognition with Joint Line and Orientation Features", IEEE Transactions on Systems, Man, and Cybernetics, Part C, In Press.

2.    W. Li, L. Zhang, D. Zhang, G. Lu, and J. Yan, “Efficient Joint 2D and 3D Palmprint Matching with Alignment Refinement”, in: Proc. CVPR 2010.

3.    D. Zhang, G. Lu, W. Li, L. Zhang, and N. Luo, "Palmprint Recognition Using 3-D Information", IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews, Volume 39, Issue 5, pp. 505 - 519, Sept. 2009.

4.    W. Li, D. Zhang, and L. Zhang, "Three Dimensional Palmprint Recognition", IEEE International Conference on Systems, Man, and Cybernetics, 2009.

5.    D. Zhang, G. Lu, W. Li, L. Zhang, and N. Luo, "Three Dimensional Palmprint Recognition using Structured Light Imaging", 2nd IEEE International Conference on Biometrics: Theory, Applications and Systems, BTAS 2008, pp. 1-6.

The Announcement of the Copyright

All rights of the PolyU 3D Palmprint Database are reserved. The database is only available for research and noncommercial purposes. Commercial distribution or any act related to commercial use of this database is strictly prohibited. A clear acknowledgement should be made for any public work based on the PolyU 3D Palmprint Database. A citation to "PolyU 3D Palmprint Database,” and our related works must also be added in the references. A soft copy of any released or public documents that use the PolyU 3D Palmprint Database must be forwarded to:

Downloading Steps (Recommend to open by IE):

This PolyU 3D Palmprint Database is made publicly available and can be obtained from this website. It is totally free for academic, noncommercial purposes. Any person or organization that wishes to use the database must agree to the terms of the agreement and fill in the agreement forms. The successful applicants will receive their login accounts and passwords to download the database. Moreover, to facilitate checking the 3D palmprint ROI visually, we developed a tool, which is available here. C and Matlab code for reading the 3D palmprint ROI is available here.

If you want to use our 2D palmprint database (IEEE PAMI 2003), you can go here.

Copyright © 2013   Biometric Research Center, The Hong Kong Polytechnic University