Abstract: Methods and devices acquire images using a stereo camera or camera network aimed at a first location. The first location comprises multiple parallel primary lanes merging into a reduced number of at least one secondary lane, and moving items within the primary lanes initiate transactions while in the primary lanes and complete the transactions while in the secondary lane. Such methods and devices calculate distances of the moving items from the camera to identify in which of the primary lanes each of the moving items was located before merging into the secondary lane. These methods and devices then order the transactions in a merge order corresponding to a sequence in which the moving items entered the secondary lane from the primary lanes. Also, the methods and devices output the transactions in the merge.

Abstract: An inkjet printer forms low and high area coverage test patterns using inkjets in a printhead. The printer identifies process direction offsets for the inkjets in both test patterns using scanned image data of the printed test patterns. The printer identifies a level of cross-talk in the printhead with reference to a standard deviation difference between the process direction offsets identified in the low area coverage and high area coverage test patterns. The printer generates a recommendation for an operational configuration of the printhead based on the identified level of cross-talk.

Abstract: An inkjet printer forms low and high area coverage test patterns using inkjets in a printhead. The printer identifies process direction offsets for the inkjets in both test patterns using scanned image data of the printed test patterns. The printer identifies a level of cross-talk in the printhead with reference to a standard deviation difference between the process direction offsets identified in the low area coverage and high area coverage test patterns. The printer generates a recommendation for an operational configuration of the printhead based on the identified level of cross-talk.

Abstract: Methods and devices acquire images using a stereo camera or camera network aimed at a first location. The first location comprises multiple parallel primary lanes merging into a reduced number of at least one secondary lane, and moving items within the primary lanes initiate transactions while in the primary lanes and complete the transactions while in the secondary lane. Such methods and devices calculate distances of the moving items from the camera to identify in which of the primary lanes each of the moving items was located before merging into the secondary lane. These methods and devices then order the transactions in a merge order corresponding to a sequence in which the moving items entered the secondary lane from the primary lanes. Also, the methods and devices output the transactions in the merge.

Abstract: A method of controlling the placement of images on output of a printer, including determining scanner spatial error using an ideal medium having a first two-dimensional array on the ideal medium then determining printer spatial error using a second medium having a second two-dimensional array; and finally, controlling placement of images on the output of the printer based on the scanner spatial error and the printer spatial error.