• Call Cognex Sales: 855-4-COGNEX (855-426-4639)

  • Contact Us

Cognex Blogs

Laser scanners struggle to read poor quality barcodes in high speed logistics applications


Related Products

DataMan 360

Barcode Readers

Cognex DataMan and MX series of industrial, image-based barcode readers decode 1-D and 2-D codes, from printed labels to the hardest to read direct part mark (DPM) codes, and deliver industry-leading read rates.

Dataman 150/260 Series Optics

Fixed-mount Barcode Readers

Vision-enabled barcode readers with the ease-of-use and cost of laser scanners

Matt Engle, 04-24-2012

Traditional laser scanners can only provide high read rates with good-quality printed barcodes when labels are undamaged. But barcode quality can vary dramatically depending on the amount that the package is handled, the printing technology, label geometry, point of origin and a host of other factors. Poor contrast, for example, may not provide enough difference between a printed and unprinted line to get an accurate read.

Because a laser scanner attempts to decipher the code along a single laser line, ambient light or specular reflections may also reduce the laser scanner’s ability to read the code successfully. Some laser scanners attempt to solve this issue by “stitching” multiple scan lines together to reconstruct a damaged barcode. This method works well in some cases, but not when damage is severe. Area-array image-based readers, however, take snapshots of the codes, like digital cameras, and use advanced decoding algorithms to decipher what’s captured in the image. Imager algorithms rarely fail, reading codes of all levels of damage and orientation and achieving six sigma read rates.

Have I convinced you to look at DataMan logistics readers as your new alternative to struggling laser scanners? If not, keep reading this blog and our website!

For more information on Cognex Products:


Join MyCognex


Cognex representatives are available worldwide to support your vision and industrial barcode reading needs.

Contact Us