Blur estimation for barcode recognition in out-of-focus images
PReMI'11 Proceedings of the 4th international conference on Pattern recognition and machine intelligence
Two-dimensional bar code out-of-focus deblurring via the Increment Constrained Least Squares filter
Pattern Recognition Letters
| Hi-index | 35.68 |
The ubiquitous supermarket checkout scanner is indeed a well engineered and effective device. There is, nevertheless, demand for better devices. Existing scanners rely on simple and indeed low-cost signal processing to interpret bar code signals. These methods, nevertheless, fundamentally limit label reading and cannot be extended. A new method based on the deterministic EM algorithm is described. First results show a substantial improvement in label reading depth of field, which is an important performance parameter for bar code readers