Information Extraction from Images
Contents: Foreword. 1. Basic principles of photogrammetry. 2. Introduction of visual image interpretation. Bibliography. Index.
"When we look at aerial and space images we see various objects of different sizes and shapes. Some of these objects may be readily identifiable while others may not depending on our own individual perceptions and experience. When we can identity what we see on the images and communicate this information to to others we are practicing image interpretation. The images contain raw image data. These data when processed by a human interpreters brain become usable intonation.
As previously mentioned aerial photography dates to the year 1858 and the balloon photographs of Nadar. Aerial photography did not receive much emphasis during the ensuing decades because the process was cumbersome and risky and the results uncertain. However some scientists and inventors did recognize the potential value of aerial photographs in presenting a new view of the earths surface. Military strategists also understood the potential of this medium for the remote acquisition of military information. During World War I, aerial photography was established as an operational military reconnaissance tool.
After World War I, many nonmilitary applications appeared. The experience gained by World War I pilots in taking pictures from the air convinced quite a number of them that they could put their newly acquired skills to work on such civilian applications as agricultural surveys timber surveys and mineral exploration. The U.S. Department of Agricultures Agricultural Stabilization and conservation Service (USDA-ASCS) began photo graphing selected countries of the United States on a repetitive basis in 1937. Images from space with various levels of detail have been available since the 1960s. Earlier images were of low resolution and were often at oblique angles.
This book will be of immense help to all those contemplating to acquire expert knowledge of information extraction from images." (jacket)
