Digital image sensors

Pixel Picture element the smallest unit that contains light-sensitive information on a digital imaging sensor or display screen. 

Image Sensors and Signal Processor for Digital Still Cameras,... 

H. Uchida, W.Y. Zhang and T. Katsube, High speed chemical image sensor with digital LAPS system, Sens. Actuators B Chem., 34(1-3) (1996) 446-449. 

It can be produced in standard CMOS technology, opening the way to image sensors with integrated electronic functionality and even complete digital processors. 

Digital image acquisition provides opportunities for major improvement in automatic optimization of image acquisition. For example, it is no longer necessary to have a separate AEG sensor as part of the system because the digital detector can serve as a multi-element sensor. This is currently not possible... 

The categories of interest must be carefully selected and defined to successfully perform digital image classification. It is essential to realize the fundamental difference between the information classes (defined by the analyst) and spectral classes (inherent of sensor). The major point of difference between various classification schemes is their emphasis and ability to convert spectral classes into information classes of remote sensing data. 

Type of sensor that converts electromagnetic radiation into electric charges that are processed to form a digital image. 

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