Image organizers such as imgSeek and GIFT allow query by image content (QBIC). QBIC help users find duplicate and similar photos. However, the similarity is measured based on color, texture and shape, not in terms of people. We implemented a “query by face” feature for organizing personal digital photos, using face detection and recognition techniques. We used the OpenCV library to extract face...

Abstract. Automatic photogrammetric processing of historical (or archival) aerial photos is still a challenging task, particularly in cases missing ancillary information, low radiometric and image quality, limited stereo coverage or large temporal span. However, with recent advances photogrammetry Artificial Intelligence (AI) algorithms for interpretation, an increasing number applications are ...

rivers are unstable environments affected by natural or human factors in changing their directions and patterns. in this study, the tectonic effects on the pattern of the gharasou river in the north of kermanshah city have been studied. aerial photos (years 1955 & 1990), satellite images (etm, year 2000) and topographic as well as geologic maps were used as research tools. the procedure of the ...

We present a new image file format, called Progressive Graphics File (PGF), which is based on a discrete wavelet transform with progressive coding features. We show all steps of a transform based coder in detail and discuss some important aspects of our careful implementation. PGF can be used for lossless and lossy compression. It performs best for natural images and aerial ortho-photos. For th...

riparian vegetation is a component of river system that performs certain basic functions including primary vegetative production, protecting stream banks from erosion, trapping sediments, promoting water quality, wildlife habitat and fisheris, forage for livestock, etc. in this research, spatio-temporal change of vegetation riparian area of aghbolagh-river as an upstream of karoon-river for 65-...

The GeoMemories project aims at publishing on the Web and digitally preserving historical aerial photographs that are currently stored in physical form within the archives of the Aerofototeca Nazionale in Rome. We describe a system, available at http://www.geomemories.org, that lets users visualize the evolution of the Italian landscape throughout the last century. The Web portal allows compari...