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Driver behavior diversity affects traffic process greatly especially for the traffic evacuation process. Taking the driver behavior diversity into consideration, this paper developed a meta-model of driver behavior in microscopic traffic evacuation simulation, named DGIT frame, which are Decision, Game, Individual and Transform. DGIT frame integrates heterogeneous models in different levels into a...
Spoof detection is a critical function for iris recognition because it reduces the risk of iris recognition systems being forged. Despite various counterfeit artifacts, cosmetic contact lens is one of the most common and difficult to detect. In this paper, we proposed a novel fake iris detection algorithm based on improved LBP and statistical features. Firstly, a simplified SIFT descriptor is extracted...
Image segmentation is very essential and critical to image processing and pattern recognition. In order to extract the feature stars, a novel method for image segmentation by use of nonsubsampled contourlet transform (NSCT) is provided by this paper. The space images are transformed by the NSCT, and then the magnitude of the NSCT coefficients of all the directional subbands at a specific level are...
A new laser scan matching method based on clustering is advanced. It takes the advantages of both non-iterative matching method and iterative matching method as well as increases the speed and the precision of matching. A method of map building based on laser scans using the matching method above is presented for mobile robots. The map building method matches two consecutive scans by using the feature...
Image searching and authentication have become strong requirements in the digital world. Image perceptual hashing has been proposed to meet them. In this paper, a rotation resilient image hashing algorithm is presented. In the algorithm, the position information of original image is extracted to adjust the rotation. Then the features of the image are extracted by contourlet transform. The key-dependence...
We present a registration algorithm for automatic, robust SAR (Synthetic Aperture Radar) image alignment. The registration problem is handled using sparse feature representation, which comprises local feature localization and description. The feature location is determined by detecting bifurcation structure in edge image and its orientation is assigned using corresponding bifurcation structure type...
It is usually difficult for students to understand some theories in learning physical chemistry. A new teaching method was proposed that we should introduce the forming process and the research method (FPRM) of those theories to help them being understood. ldquoCarnot cyclerdquo teaching is analyzed as an example by FPRM method.
Objective image quality assessment (QA) is a fundamental and challenging job in image processing which evaluates the image quality consistently with human perception automatically. Generally, an image can be segmented into two kinds of areas: structure and texture. And structural information plays a much more important role between the two. The pixels, edges and shape with directional characteristic...
This paper presents a blind watermark algorithm in mixed transform domain by using chaotic sequence for the watermark locating. After DWT, the DCT is applied on the low frequency and chaotic sequence is used to locate the position of the watermark information in DCT domain. The watermark information is embedded by comparing the frequency coefficients. With favorable transparency, the experimental...
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