barcode reading software
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 …
Code 39 barcodes can be generated using either fonts or software such as embedded objects. When using a font, the text should include the start/stop * character at either end of the barcode, but software generated barcodes will often add the * characters automatically. This can sometimes result in barcodes with 2 * characters at either …
Example: Code 3 of 9 is the most popular barcode for encoding alpha-numeric characters. Key features: 2 different width of bar/space. Symbol set contains 43 characters: A-Z, 0-9, and -, ., *, $, /, +, %, SPACE. Each character is made up of 5 bars and 4 spaces with 3 wide bars/spaces and 6 narrow …
The main requirement is for each black or white bar in a barcode to be clearly visible on the image. All barcodes have at least 2 sizes of bar and the image needs to be of high enough quality to show this. For example, a Code 39 barcode consists of 9 bars per character, of …
