voltage and the input signal (which is at the reset level). When the clamp is released, the ADC input will follow the CCD output, but with the offset added (until the charge bleeds off the capacitor). Typically, the signal will be clamped just before each pixel is read, restoring the DC offset on the capacitor. Sensors 79 Figure 3.22 Correlated double sampling. Nonuniformity This is the amount of variation between pixels in an array when exposed to the same light. In a linear array, it can result in bars of lighter or darker areas across the reconstructed image. There are several sources of nonuniformity inside the CCD, as well as lighting variations in a typical system. Lighting vari- ations can be caused by an uneven light source, or by things that affect the light path, such as reflections off a shiny object adjacent to the path that the target image takes.
This is followed by cooking in a hot- the humidity and fat content of the surface water spray or steam and by chilling. In layer of the sausage, the temperature, humid- smoking cooked sausages, too high tempera- ity, and density of the smoke, and the dura- ture may lead to excessive fat and weight loss tion of the process, affect both the and thus to creased surfaces of the sausages characteristic sensory properties and the shelf and nonuniformity of color. Smoking at a life of the products. temperature not exceeding 40°C is used also Many smoking procedures are used in the for preparation of salted, spiced, dried pork industry and in artisan meat processing. They back fat. lead to very different sensory properties and In hot smoking, the first stage (lasting shelf lives of various products. In these pro- about 30 minutes, without smoke, at 40–
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