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To get the good performance of infrared face recognition from the biological feature and statistical character, a novel method for infrared face recognition based on blood perfusion and fisher linear optimal discrimination is proposed in this paper. Firstly, thermal images are converted into blood perfusion domain by blood perfusion model to enlarge between-class distance and lessen within-class distance,...
A new multi-class image recognition method based on Bayes point machines (BPM) and binary tree is proposed. Analysis and experimental results demonstrate that BPM is a good alternative to the popular support vector machine (SVM). Also we designed a novel multi-class method by utilizing both class distances and class distributions. The integrated classification procedure starts with computing all the...
In order to implement 3D measurement in different measurement systems with line structured-light sensor, the extrinsic matrix for transforming the position between the structured-light sensor and the measurement platform must be calibrated. An extrinsic calibration method, achieved by measuring the fixed point (the center of a standard ball) of the measuring system with the sensor on the different...
PnP (perspective-n-point) problem is a classical problem in computer vision and photogrammetry. According to the number of corresponding points, PnP problem can be resolved linearly or nonlinearly. When the number of corresponding points is greater than or equal to 6, PnP problem can be formulated as an linear least squares problem and solution is unique in most cases; however, when the number of...
Heating problem is one of the most important safety issue of luminaire. With more and more decoration purpose, more and more luminaire models are derived and the heating tests of luminaire become time-consuming. Under such situation, a thermal-imaging based automatic luminaire heating test system is under development to improve efficiency. The system is designed to present the testing result and verdict...
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