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.
For the traditional problems of template drift and the low efficiency of algorithms in video image target tracking applications. A new template tracking algorithms based on active drift correction is proposed. The algorithm incorporates a drift correction term and a target tracking term. By adding a drift correction term into the traditional affine image alignment algorithms and update the template...
The paper proposes a stitching algorithm of fast serial image mosaic for UAV remote sensing images based on artificial immune system. Firstly, it extracts the large edges using the method that based on Wavelet and Canny edge detector, and takes sequential similarity detection algorithm (SSDA) as similarity measure and uses artificial immune network algorithm to speed up the searching of the initial...
Color weights of green(G) and red(R) are extracted from the color space RGB for color video image, and then are respectively converted to binary images, which are used in the following image matching. Methods of Large Diamond Search and Small Diamond Search are applied in template searching in the binary images with the values R and G. Method of block matching is used to obtain the motion vectors...
Horizontal brightness projection is used to extract the welding region image, which is then processed by median Altering to get background intensity of each pixel. Based on the characteristics of the human brightness vision, an approximate subsection function of just noticeable difference (JND) is set up. According to the function, welding region image is enhanced adaptively. By the approach presented,...
Based on the characteristics of color space transform between RGB and HSI, an algorithm of color difference measurement for color image is presented. The degree of scatter about color space distribution of a given image region is determined by computing the sum of color difference between every pixel and the other pixels of the image region. Then an effective feature template, which is then used in...
Image regions, which are not easily affected by moving target, are selected as matching region respectively. Then the matching regions are divided into a specified number of sub-regions according to a given experience value. By a presented algorithm of representative point matching (RPM), the local motion vecters (LMV) can be obtained. Median filter and mean filter are applied to get the real jitter...
Based on the values of external orientation elements of the camera installed on the unmanned aerial vehicle (UAV), the nearest-neighbor interpolation is adopted to rectify original images geometrically. The range of the overlapping region between two consecutive images is determined by the flying status parameters of UAV. Both of the overlapping regions of the two images are processed to binary image...
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.