Ying Geng, Jianmei Li, Hongzhi Gao. Laser Marking Technology of Color Direct Part Marking Based on Data Matrix[J]. Laser & Optoelectronics Progress, 2020, 57(9): 091202
- Laser & Optoelectronics Progress
- Vol. 57, Issue 9, 091202 (2020)
Fig. 1. Generation process of a color Data Matrix two-dimensional barcode
Fig. 2. Marking process of a color Data Matrix two-dimensional barcode
Fig. 3. Example of color Data Matrix two-dimensional barcode samples
Fig. 4. Color normalization process of each module. (a) Color barcode image; (b) division of the corrected image; (c) image after color unification of each module
Fig. 5. 4 colors Data Matrix two-dimensional barcode after barcode reconstruction
Fig. 6. Information matrix extraction of color two-dimensional barcode. (a) Information area of color two-dimensional barcode; (b)-(d) areas of each color; (e)-(g) locations and numbers of each color module
Fig. 7. Segmentation process of color two-dimensional barcode image
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Table 1. Capacity comparison between color Data Matrix two-dimensional barcodes and original Data Matrix two-dimensional barcodes
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Table 2. Laser processing parameters of yellow, purple, and blue
Table 3. Centriods and corresponding colors of color clustering
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