Computer Processing of Remotely-Sensed Images: An by Paul, Koch, Magaly Mather

By Paul, Koch, Magaly Mather

This fourth and whole color version updates and expands a widely-used textbook aimed toward complex undergraduate and postgraduate scholars taking classes in distant sensing and GIS in Geography, Geology and Earth/Environmental technological know-how departments. current fabric has been pointed out thus far and new fabric has been additional. specifically, a brand new bankruptcy, exploring the two-way hyperlinks among distant sensing and environmental GIS, has been added.New and up-to-date fabric includes:A site at www.wiley.com/go/mather4 that offers entry to an up to date and multiplied model of the MIPS picture processing software program for Microsoft home windows, PowerPoint slideshows of the figures from each one bankruptcy, and case experiences, together with complete info sets,Includes new bankruptcy on distant Sensing and Environmental GIS that gives insights into the ways that remotely-sensed info can be utilized synergistically with different spatial facts units, together with hydrogeological and archaeological applications,New part on photo processing from a working laptop or computer technology point of view awarded in a non-technical manner, together with a few feedback on statistics,New fabric on picture transforms, together with the research of temporal switch and knowledge fusion techniques,New fabric on photo class together with selection bushes, aid vector machines and self reliant parts research, andNow in complete color throughout.This e-book presents the cloth required for a unmarried semester path in Environmental distant Sensing plus extra, extra complicated, studying for college kids specialising in a few element of the topic. it truly is written mostly in non-technical language but it offers insights into extra complicated issues that a few may possibly examine too tough for a non-mathematician to appreciate. The case reviews to be had from the web site are fully-documented study initiatives entire with unique information units. For readers who wouldn't have entry to advertisement photograph processing software program, MIPS presents a licence-free, intuitive and entire substitute.

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Extra resources for Computer Processing of Remotely-Sensed Images: An Introduction, 4th Edition

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The terms are then preceded by the adjective spectral; for example the spectral 6 Computer Processing of Remotely-Sensed Images: An Introduction P level appear to be both waves and particles. 6 (a) The angle α formed when the length of the arc PQ is equal to the radius of the circle r is equal to 1 radian or approximately 57 ◦ . Thus, angle α = PQ/ r radians. There are 2π radians in a circle (360 ◦ ). (b) A steradian is a solid three-dimensional angle formed when the area A delimited on the surface of a sphere is equal to the square of the radius r of the sphere.

4). 5 below, deflects light rays from a straight path and thus causes blurring or haziness. It affects the blue end of the visible spectrum more than the red end, 9 and consequently the blue wave and is not used in many remote-sensing systems. 10a–c shows three greyscale images collected in the blue/green, green and red wavebands respectively by a sensor called the Thematic Mapper that is carried by the American Landsat-5 and Landsat-7 satellites (Chapter 2). The different land cover types reflect energy in the visible spectrum in a differential manner, although the clouds and cloud shadows in the upper centre of the image are clearly visible in all three images.

Since the 3–5 µm region also contains some reflected solar radiation it can only be used for temperature sensing at night. 7 µm. Since targets such as forest fires are sporadic in nature and require high-resolution imagery the 3–5 µm spectral region is used by aircraft-mounted thermal detectors. This is a difficult region for remote sensing because it contains a mixture of reflected and emitted radiation, the effects of which are not easy to separate. The selection of wavebands for use in remote sensing is therefore seen to be limited by several factors: primarily (i) the characteristics of the radiation source, as discussed in this section, (ii) the effects of atmospheric absorption In later chapters, we consider measurements of radiance from the Earth’s surface made by instruments carried by satellites such as Landsat and SPOT that operate in the optical wavebands, that is, those parts of the electromagnetic spectrum with properties similar to those of visible light.

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