The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper deals with advanced method for elimination of the dark current in security images acquired by simple camera with charged coupled device (CCD) sensor. There will be discussed the correction method based on the modeling of the useful security image data and dark current in the wavelet domain. As the model for the dark frame (mapped dark current) image and for the light image the generalized...
The image quality is a crucial issue in the applied imaging system incl. security. The security imaging systems have special qualitative requirements - the general perceptive image quality is not so important compared to the preservation of selected security image characteristics such as an identification or classification. In the first part we have tested the impact of image enhancing algorithms...
The most efficient image noise removal methods are based on the statistical models of the wavelet coefficients. These statistical models can be one or two dimensional. This paper deals with the method based on the generalized Laplacian probability density function (PDF). The generalized Laplacian PDF allows to model the histogram of the details bands of the discrete wavelet transform (DWT). This model...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.