barcode reading software
I have now spent quite a while dealing with troublesome images with the Softek Barcode Reader SDK and have found several tricks which solve almost all problems which could arise. The issue is almost always image quality. Poorly scanned colour images or simply a low resolution leading to the bars coming together are often the …
PDF-417 barcodes are a common type of 2-D barcode and are designed to store more data than a 1-D barcode with built in redundancy and error correction. A PDF-417 barcode actually consists of stacks of 1-D barcodes arranged in columns. Each of the 1-D barcodes is called a cluster and has a numeric value. The …
We often receive emails asking us to explain why our SDK is unable to decode a barcode from an attached image, and the answer is often that the resolution of the image is too low; but why does image resolution play such an important role in the decoding of a barcode? What is resolution? For …
As the toolkit scans the images in a document, it assigns a “hit-count” to each barcode-like pattern it finds. The hit-count for a very clear barcode will typically be in the region 20 to 100, depending on the size of the barcode and the settings used within the sdk. The PrefOccurrence and MinOccurrence properties specify hit-count levels …
Here are some examples of the good, the bad and the ugly of the barcode world. The Good: Code 39 Code 25 Interlaced Code 128 EAN-8 EAN-13 UPC-A UPC-E The Bad and the Ugly: Example 1 – Too many asterisk characters. Example 2 – Extra character returned by toolkit Example 3 – A box around the barcode Example …
