Patent ID: 9218536
Filing Date: 2015-12-22
Classification: G06K

Abstract:
1. A digital electronic apparatus for extracting from a two-dimensional digital image a one dimensional digital signal along a projection line, comprising: an image memory in which is stored the digital image; a working memory which receives a portion of the digital image from the image memory; a direct memory access controller configured to receive a set of transfer parameters for transferring data from the image memory to the working memory as specified by the set of transfer parameters; a table memory that holds a plurality of transfer templates, wherein one of the plurality of transfer templates corresponds to an orientation relative to a pixel grid of the two-dimensional digital image, and from which can be derived a set of transfer parameters, wherein the set of transfer parameters: wherein the orientation is one of a set of allowable orientations, the set of allowable orientations including a plurality of orientations that are not parallel to the pixel grid and are not diagonal to the pixel grid; and wherein the plurality of transfer templates comprises information that can be used to derive transfer parameters for any one of the plurality of allowable orientations; a processor connected to the working memory, the direct memory access controller, and the table memory, which operates so as to: