Edge enhancement
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Recent papers in Edge enhancement
The joint transform correlator (JTC) is one of two main optical image processing architectures which provide us with a highly effective way of comparing images in a wide range of applications. Traditionally an optical correlator is used... more
The purpose of this study was to evaluate the effects of system parameters (focal spot size, tube voltage, geometry, detector resolution, and image noise) and object characteristics (edge gradient/ shape, composition, thickness, and... more
The joint transform correlator (JTC) is one of the two main optical image processing architecture which provides a highly effective way of comparing images in a wide range of applications. Traditionally, an optical correlator is used to... more
In order to illustrate the self-assembly capability, we consider a laser imaging experiment on a wet film that is made of bacteriorhodopsin (BR) molecules suspended in a diffusion-limited viscous medium. BR wet film is similar to a wet... more
ABSTRACT It is well known that the Gabor wavelet transform (GWT) provides directional information for the analysis of an image. In this paper, we proposed an approach based on the GWT by combining unsupervised Fuzzy c-means (FCM)... more
ABSTRACT It is well known that the Gabor wavelet transform (GWT) provides directional information for the analysis of an image. In this paper, we proposed an approach based on the GWT by combining unsupervised Fuzzy c-means (FCM)... more
The nonlinearity of phase-conjugate beam reflection with four-wave mixing in BSO crystal by the moving grating at large fringe modulation formed by the incident-beams ratio is investigated. The experimental results have shown that the... more
This paper describes an extension of the S-CIELAB image comparison model and its use in the Virtual Image Chain for inkjet and medical display (project VICTOR: granted by European commission). The extension starts from the representation... more
A new approach for efficient and robust super-resolution is presented in this paper. The essence of the proposed method is in selectively applying a Bayesian MAP estimator to visually important image regions. Regions with high spatial... more
The purpose of this study was to demonstrate that a commercially available cabinet x-ray system is capable of phase-contrast radiography (PC-R) and to evaluate the effect of different system parameters on the degree of edge enhancement.... more
Color printers usually have only four inks (Cyan, Magenta, Yellow, and Black). They can not represent all colors of a color image. Traditional error-diffusion algorithm is proposed for solving this problem. In general, error-diffusion... more
Summary Embedded real-time image processing is widely used in many applications, including industrial inspection, robot vision, photo-copying, traffic control, automotive control, surveillance, security systems and medical imaging. In... more
Edge-detection algorithms are applied to SAR images in order to generate different edge strength maps. The results obtained can be combined to improve the final output in order to get a more defined edge strength map. In this paper... more
BACKGROUND: Two-dimensional echocardiography (2D-echo) allows the evaluation of cardiac structures and their movements. A wide range of clinical diagnoses are based on the performance of the left ventricle. The evaluation of myocardial... more
A new approach for efficient and robust super-resolution is presented in this paper. The essence of the proposed method is in selectively applying a Bayesian MAP estimator to visually important image regions. Regions with high spatial... more
A numerical model of a nearest-neighbor interconnected cellular neural network is described. The cells consist of optically driven autonulling circuits that generate analog output signals. For the numerical analysis we demonstrate that... more
... 6a). Additionally, high amplitude magnetic maxima occur within this region (Fig. 4). In the eastern section of this gradient, there are several eastwest-trending lineaments clearly visible on a Landsat satellite band 7 image (Fig. ...