Abstract: A system and method for achieving constant magnification of a scanned three-dimensional item without the use of special optics or other specialized hardware. The system includes the dynamic computation of a camera parameter-dependent factor and applying that factor in real-time to the sampled signal resulting from the scan of the item.

Abstract: A system and method for collecting relatively high resolution amplitude data with a conventional sensing device from a signal source that is sampled at a relatively low characteristic scan resolution, and then generating relatively high scan resolution, relatively low resolution amplitude data through real-time application of up-sampling and quantization algorithms. The resulting relatively high scan resolution, relatively low resolution amplitude data closely approximate the image quality resulting from a sensing device operating at a much higher scan resolution, using a conventional data collection system. The invention relates generally to systems that collect the high resolution amplitude data that must be converted to low resolution amplitude data in order to maximize throughput rates.

Abstract: An image lift tunnel scanner uses extended depth of field cameras in order to view objects of various shapes and sizes on a conveyor system. The image lift tunnel scanner operates by passing a package first through a dimensioning device, such light curtain that determines the package's height, width, length, orientation and position on the conveyor belt. A bottom scan camera takes a fixed focus image and requires only a trigger and length information from the light curtain. The length information determines the duration of the scan after the camera receives the trigger signal. A top scan camera also requires a trigger and the length information along with the height information so that it can set its focus. Each of two side cameras also receives trigger and length information. If the package is registered on the conveyor belt, the only additional information required is the package width and the package position on the conveyor belt so that the start and stop of the image scan can be calculated.