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What is CCD / CMOS Sensor

Chapter 6
Handbook of Research on Emerging Digital Tools for Architectural Surveying, Modeling, and Representation
Support photosensitive digital format photodiodes minimum elements that convert the light signal into electrical charge. The CCD and CMOS sensors are based on two different technologies for the conversion of the light signal. Beyond the strictly technical aspects is important to point out the main differences in quality. The CCD generates an image of better quality with less noise, the CCD consumes more energy; the CCD is more expensive; CMOS is more versatile and more manageable in small systems.
Published in Chapter:
Shape and Geometry in the Integrated Digital Survey
Leonardo Paris (Sapienza University of Rome, Italy)
Copyright: © 2015 |Pages: 23
DOI: 10.4018/978-1-4666-8379-2.ch006
Abstract
The study of the shape in the architectural survey is the principal goal of the surveyor. Any shape is based on stringent geometric rules that the current digital methods of data acquisition don't detect directly. The basic element in the integrated digital survey is today the point that must to be processed, automatically or manually, to generate a 3D mathematic model. In this chapter the author wants to highlight how these data are important not only for metric information but also to characterize the quality of the shape through the digital photographic techniques. The description of some practical examples proves that in both phases of the survey, acquisition and processing, it is important to know the relations between the shape of the object and the instrumental characteristics in the different methods.
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