The application of Wei Shi high resolution industrial camera in two-dimensional code detection

With the development of computer science and technology, automatic identification technology has been widely used. Among many automatic identification technologies, barcode technology has become one of the main computer automatic identification technologies today. In order to solve the problem of limited barcode information capacity, two-dimensional codes have replaced one-dimensional codes and become the main force in the field of barcodes. They have been widely used in the Internet of Things and information interaction. They are everywhere in life.

The two-dimensional code uses a number of geometric shapes corresponding to binary to represent text numerical information on a plane. After reading the two-dimensional code image through an image acquisition device, it is processed by two-dimensional code recognition software to identify the information in it. To achieve automatic information processing, this is what we often say is the technology of two-dimensional code recognition through machine vision.

In visual two-dimensional code detection, the current common configuration is to use a low-resolution industrial camera, each time a two-dimensional code is taken for processing. The following figure demonstrates the use of the data-code recognition function of halcon software, with 400,000 pixels. Gigabit industrial camera MV-EM040C / M shooting and real-time detection. The advantage of this solution is that the cost is relatively low, but the disadvantage is that it can only detect the barcode of one product at a time, which is too slow.

QR code real-time detection screen

With the improvement of the efficiency of automated production, such a recognition speed is gradually unable to meet the requirements for use, and a good solution is urgently needed in the field of two-dimensional code recognition. How to solve this problem? Obviously, the software recognition speed is not the bottleneck limiting this system. The simple way is to increase the number of simultaneous shots. This requires us to increase the resolution of the industrial camera used. The increase in resolution will lead to an increase in the overall system cost. How to solve it? The 14-megapixel CMOS Gigabit Ethernet industrial camera provides a good answer to this problem. This camera uses the current popular Gigabit network interface, 1 / 2.3-inch CMOSIS chip, resolution 4608x3288, and cost-effective.iJUNCO strongly recommends for you!