A 2D Barcode Extraction Method Based on Texture Direction Analysis

Barcode extraction is an essential step in the 2D barcode reading architecture. This paper presents the development and evaluation of a new approach toward the design of 2D barcode extraction based on texture direction analysis. This new approach can be detailed as: i) threshold a gray-level image; ii) analyze the texture direction of a window which is selected within the barcode area in the image; iii) roughly locate the barcode using the proposed texture direction analysis; iv) precisely locate the barcode by applying Hough transform; iv) rectify the barcode using inverse perspective transformation and bilinear interpolation methods; v) apply various types of barcode decoder. The experimental result showed this approach is applicable to most of the 2D barcode decoders.