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Three-dimensional models of fingerprints obtained from contactless acquisitions have the advantages of reducing the distortion present in traditional contact-based samples and the effects of dirt on the finger and the sensor surface. Moreover, they permit to use a greater area for the biometric recognition.
This paper presents an effective object tracking algorithm for simultaneous changes, such as deformation, translation, scale, and color variations. The proposed algorithm is based on the maximum color distance (MCD) and the shape density. The MCD provides invariance for illuminations changes, while the shape density is the density of shape distribution corresponding to the respective distance from...
In this paper we present a novel method of considering self-occlusion when fitting faces under global illumination. The effects of self-occlusion under spherical harmonics (SH) illumination are predicted through the use of a a morphable model of faces. A linear function is precomputed which maps morphable model coordinates directly to surface irradiance values. We demonstrate that considering self-occlusion...
3D face reconstruction from a single 2D image can be performed using a 3D Morphable Model (3DMM) in an analysis-by-synthesis approach. However, the reconstruction is an ill-posed problem. The recovery of the illumination characteristics of the 2D input image is particularly difficult because the proportion of the albedo and shading contributions in a pixel intensity is ambiguous. In this paper we...
The motion capture system based on visible light needs a kind of artificial marker which can be recognized efficiently. Designs of existing markers are mostly based on black and white texture features that apply to static recognition. This paper designs a color marker and its recognition methods. It can reduce time complexity and make motion capture system based on visible light possible. We experimented...
Ceramic lighting is produced as one of homes interior decoration product and it is very appropriate for finest hotels, private homes and also restaurant. There is a certain style of ceramic lighting that has been produced therefore; the aim is to obtain a suitable decoration through different techniques and decorations. The objectives of this research study is to obtain a suitable decoration through...
In a real-time face tracking and recognition system proposed by Oka and Shakunaga, the weighted average of registered persons is calculated after photometric adjustment, and the weights are used for person identification and shape inference. Although that method works well for 25 persons, the computational cost is high when the number of registered persons increases. To solve this problem, this paper...
Precise knowledge of the 3D shape of clinical crowns is crucial for the treatment of malocclusion problems as well as several endodontic procedures. While Computed Tomography (CT) would present such information, it is believed that there is no threshold radiation dose below which it is considered safe. In this paper, we propose an image-based approach which allows for the construction of plausible...
Vulnerability to spoofing attacks is a serious drawback for many biometric systems. Among all biometric traits, face is the one that is exposed to the most serious threat, since it is exceptionally easy to access. The limited work on fraud detection capabilities for face mainly shapes around 2D attacks forged by displaying printed photos or replaying recorded videos on mobile devices. A significant...
International Technology Roadmap for Semiconductors (ITRS) report proposes extreme ultraviolet (EUV) lithography to be the key candidate of lithography tools to manufacture devices at the 22nm node and beyond. The image effects on wafer critical dimensions (CDs) in the EUV lithography are different from the effects in the conventional lithography caused by the off-axis illumination and refelective...
Automatic classification of figures present in healthcare documents is known to be useful for biomedical document mining. The context of a document is directly reflected in the figures present within them. Embedded text within these figures along with image features have been used for figure retrieval. We demonstrate that image features based on structural properties of figures alone is sufficient...
The development of cell manufacturing process using object recognition has been interested in automated factory. But it is not trivial work to recognize object because features transformed from illumination and diversified field needs have caused challenge problem in object detection and recognition. The recognition reliability in real world environment can be increased by object, which preserves...
Single-shot person re-identification is to match pedestrian images captured from different cameras at different time under the condition of large illumination variations, different viewpoints, and inadequate information of single-shot case. To deal with these challenges, we propose a four-step single-shot person re-identification algorithm that consists of pedestrian segmentation, human region partitioning,...
Conventional Keyboard-Light which is implemented at upper LCD area, has overhanging shape in order to light keyboard effectively, but the overhanging shape is not suitable for Edge-to-Edge flat glass surface screen which is adopted for recent Design-Centric Notebook PC. We developed Keyboard-Light which is optimized optically for Edge-to-Edge flat glass surface screen, and has Full-Flat shape which...
3D face modeling from 2D face images is of significant importance for face analysis, animation and recognition. Previous research on this topic mainly focused on 3D face modeling from a single 2D face image; however, a single face image can only provide a limited description of a 3D face. In many applications, for example, law enforcement, multi-view face images are usually captured for a subject...
Aimed at the complexity of the traffic, this paper presents a triangle traffic sign detection method using Radon transform . the process of detection consists of three parts. Firstly, the background in image is filtered by the color characteristics of triangle traffic sign. Then the target image is transformed from two-dimensional space to Radon projection space. Finally, triangle traffic signs in...
In this study a method is proposed for detect pomegranate fruits on the tree and find the number of overall pomegranates using near camera images obtained from the stations established the groves. The pomegranate has significant red color, so a color-based method is applied for to detect the fruits on the tree. Color alone cannot provide a sufficiently robust algorithm for the detection of the pomegranate...
Content printed on the paper media is not rewritable, but its appearances can be controlled by illumination. In this paper, we propose a new method to represent three-dimensional (3-D) shape on the print media by the shading animation using projector-camera feedback. The proposed method consists of a hue, saturation, and value (HSV) map and an appearance control technique, and these are key technologies...
In this paper, we propose an active 3D shape acquisition method based on photometric stereo using smartphone's camera and flash. A pair of smartphones collaborates as the master and slave, in which the slave projects illumination from different locations while the master captures the images and processes photometric stereo algorithm to reconstruct 3D shape. In order to reduce the error, the smart-phone's...
Using gesture for interaction is a notion of natural human computer interaction. The use of gesture requires a correct identification of the intended pose by the system. Already numerous algorithms are working on it but not paying much attention on the complexity. Hence in this paper, a hybrid algorithm is being introduced to reduce the complexity of process also to make it insensitive with respect...
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