Palm vein recognition is motivated by the advantages of high security and liveness detection, but its popularity prevented cost palm capture devices. This study proposes a low-cost practical system. First, authors' system captures near-infrared (NIR) image with complementary metal–oxide–semiconductor camera in lieu an NIR charge-coupled device camera. The goal to reduce devices greatly. Second, this adopts thenar area on as region interest (ROI) for further recognition. get rich vessel avoid...

A new human ear recognition approach based on block segmentation is proposed in this paper. In method, an original image partitioned into several smaller sub-images, then the sub-images are extracted by features, As a result, lower dimension space features that can replace images obtained. Finally pattern classification be implemented nearest neighbor classifier. To verify effectiveness of approach, various experiments conducted four feature extraction methods. USTB database applied to test...

Iris location is an important part of iris recognition. Speed and robustness arithmetic are factors which we must pay attention to especially. In this paper analyse eye images that have based on structure characteristics eyes, put forward a rapid arithmetic. Firstly, get approximative center by gray projection, two points locate at left right boundary threshold value respectively, point locates the lower direction edge detection operators, then can ensure pupil probable center. Secondly,...

With the bit density improvement and 3-D flash techniques, modern NAND flash-memory-based solid-state disks (SSDs) dramatically increase storage capacity. However, in high-density SSDs, long read latency overheads due to massive read-retry steps have become a serious performance concern develop memory devices. In this article, we proposed parallel scheme (PaRR) utilize characteristics among cells. Specifically, when reading multiple data pages simultaneously, PaRR reduces read-response time...

In order to denoise image and improve its visual quality, an improved Wiener filtering method is proposed based on wavelet transform. First, noise analyzed, then the corrupted by given. The noisy denoised procession repeated until satisfied requirements. Experiment results demonstrate that new removes of improves with PSNR between original increased 2.02, while similar image. It can get conclusion good effect, it effective processing method.

Palm vein recognition is a new biometric identification technology. The horizontal rotation, translation and tilting of palm image greatly affect rate. To solve the above problems, this paper proposed method for based on affine geometric properties. Firstly, area obtained through preprocessing. Secondly, series centroids segments are extracted. Feature vectors constructed with radio triangles which formed centroids. Finally, Euclidean distance used as matching criteria. Experimental results...

In this paper, a novel method of measuring the interface multiplayer material (for example, between two kinds liquid) based on machine vision is proposed. The information firstly transformed into two-dimension image by imaging device. Then boundary materials detected edge detection method. Because there very low gray difference different in acquired image, borderline blurry and difficult to be detected. algorithm proposed for above special instances. For obtained discontinuous outline, new...

MR damper is a new-style intelligent and newly applied in bionic leg. The conception research purpose of leg was introduced. Modeling methods were discussed modified Sigmoid model proposed. Then experimental modeling introduced detail. In the end, simulation using iterative learning control done. results indicate with can track normal gait human healthy well has good humanoid characteristic.

Harris algorithm is widely used in image feature point extraction, but the only can reach accuracy at pixel level.Moreover, stability of significantly influenced by choice K value.In this paper, according to mathematics principles, threshold calculation method for has been improved and influence k selected users on eliminated.On basis extracting points via algorithm, a solving extreme intersecting line curved surface gradient plane proposed using fitting geometry model gradation value near...

Biotic-abiotic hybrid systems (BAHs) constructed by integrating biological methanogens with photocatalysts offer novel approaches for the effective solar-driven conversion of CO2 to CH4, providing significant inspiration achieving carbon neutrality and alleviating energy crisis. As metal would cause photocorrosion that damages microbial cells lead system imbalance. Therefore, exploring suitable metal-free is particular importance in search more efficient sustainable BAHs improve actual...

This paper proposes a new solution integrating energy function into singular value decomposition (SVD) for image de-noising. By selecting the proper values that represent signal and discarding ones noise, additive noise of an can be eliminated effectively. In order to obtain optimal number reconstruction eliminate presents minimum model. The experiment results show established model is effective in circumstance has regular pattern.

We propose a novel approach for iris recognition in less constrained environments that takes into account imaging noise arising from image capture outside the Depth of Field (DOF) cameras. The proposed utilizes stable dark regions images and does not rely on special hardware or computationally expensive restoration algorithms. have employed Gabor-based model to establish features, which are sensitive defocus, correspond with low gray-level intensity. will also present an identify bits code...