Changes in measured image irradiance have many physical causes and are the primary cue for several visual processes, such as edge detection and shape from shading. Using physical models for charged-coupled device (CCD) video cameras and material reflectance, we quantify the variation in digitized pixel values that is due to sensor noise and scene variation. This analysis forms the basis of algorithms for camera characterization and calibration and for scene description. Specifically, algorithms are developed for estimating the parameters of camera noise and for calibrating a camera to remove the effects of fixed pattern nonuniformity and spatial variation in dark current. While these techniques have many potential uses, we describe in particular how they can be used to estimate a measure of scene variation. This measure is independent of image irradiance and can be used to identify a surface from a single sensor band over a range of situations.
I got a new CCD 800B barcode scanner, but it has the same device id like
an other product from Tenx, which is on the ignore list for hid devices.
Found nothing about the old product so I report it here.
If the old one get removed from the ignore list the bardcode scanner
works perfect!
The Robot-based Imaging Test-bed (RIT) is an open source toolkit designed to be used with a network of wireless robots with imaging cameras. The toolkit will provide the infrastructure for wireless networking, overhead camera localization, path planning,