Improved gray-scale (IGS) quantization is a known method for re-quantizing digital gray-scale images for data compression while producing halftones by adding a level of randomness to improve visual quality of the resu...
Project supported by the National Key Technology R&D Program of China(No.2012BAH35B03);the National High-Tech R&D Program of China(No.2012AA12090);the National Natural Science Foundation of China(Nos.61232012 and 81172124);the Zhejiang Provincial Natural Science Foundation(No.LY13F020002)
Digital image halftoning is a widely used technique. However, achieving high fidelity tone reproduction and structural preservation with low computational time cost remains a challenging problem. This paper presents a...