| 摘要 |
<p>A method and apparatus for characterizing the performance of either a printer used to print a two-dimensional symbol or an imaging system used to generate a gray-scale image of the printed symbol. After the image is generated, an acquisition target of the symbol is located. The quality of the acquisition target is characterized by thresholding the gray-scale image, run-length encoding the resulting binary image, and computing the correlation coefficient between the run-length-encoded image and a run-length-encoded representation of a defined acquisition target. In addition, the histogram of the gray-scale image is generated and certain histogram-based quality measures are computed. The fast Fourier transform of the gray-scale image is also generated and certain hexagon-position quality measures are computed.</p> |
