TY - GEN
T1 - Hybrid resolution enhancement technique based on LookUp tables
AU - Ryu, Byong Tae
AU - Lee, Jong Ok
AU - Kim, Choon Woo
AU - Kim, Sang Ho
PY - 2007
Y1 - 2007
N2 - Recently, performance of electrophotographic printers has been significantly improved. Image quality and printing speed are major factors that determine performance of electrophotographic printers. Increase in the spatial resolution and multi-bit printing capability would result in the improved quality of printed images. However, when halftoning (or multi-toning) is performed by the printer driver, transmission time from computer to printer and the memory size required to store the image data will be increased. In order to reduce the size of image data transmitted from computer to printer, a LUT based method to enhance both of the spatial and bit-depth resolution is presented in this paper. The proposed LUTs are designed in advance using the training samples and stored at printer. When the haftoned image data is received from the computer, number of black pixels in 4×4 window is compared with number of black pixels in the 4 neighboring windows to select LUT. Spatial and bit-depth resolution are then simultaneously increased by applying the selected LUT. Various factors affecting performance of a LUT based resolution enhancement are analyzed.
AB - Recently, performance of electrophotographic printers has been significantly improved. Image quality and printing speed are major factors that determine performance of electrophotographic printers. Increase in the spatial resolution and multi-bit printing capability would result in the improved quality of printed images. However, when halftoning (or multi-toning) is performed by the printer driver, transmission time from computer to printer and the memory size required to store the image data will be increased. In order to reduce the size of image data transmitted from computer to printer, a LUT based method to enhance both of the spatial and bit-depth resolution is presented in this paper. The proposed LUTs are designed in advance using the training samples and stored at printer. When the haftoned image data is received from the computer, number of black pixels in 4×4 window is compared with number of black pixels in the 4 neighboring windows to select LUT. Spatial and bit-depth resolution are then simultaneously increased by applying the selected LUT. Various factors affecting performance of a LUT based resolution enhancement are analyzed.
UR - http://www.scopus.com/inward/record.url?scp=37349106315&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:37349106315
SN - 0892082739
SN - 9780892082735
T3 - International Conference on Digital Printing Technologies
SP - 196
EP - 200
BT - NIP 23, 23rd International Conference on Digital Printing Technologies, Technical Program and Proceedings and Digital Fabrication 2007
T2 - NIP 23, 23rd International Conference on Digital Printing Technologies, and Digital Fabrication 2007
Y2 - 16 September 2007 through 21 September 2007
ER -