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Development of an Inkjet Printer and a Novel Design for Aperiodic Clustered-dot Halftone
Development of an Inkjet Printer and a Novel Design for Aperiodic Clustered-dot Halftone
Development of an Inkjet Printer and a Novel Design for Aperiodic Clustered-dot Halftone

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자료유형  
 학위논문 서양
최종처리일시  
20250211152945
ISBN  
9798342145008
DDC  
686.22
저자명  
Hu, Sige.
서명/저자  
Development of an Inkjet Printer and a Novel Design for Aperiodic Clustered-dot Halftone
발행사항  
[Sl] : Purdue University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
128 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-05, Section: B.
주기사항  
Advisor: Allebach, Jan P.;Zhu, Fengqing M.;Zoltowski, Michael D.;Chiu, George T.C.
학위논문주기  
Thesis (Ph.D.)--Purdue University, 2024.
초록/해제  
요약Nowadays, inkjet printers are widely used all around the world. But how do they transfer the digital image to a map that can control nozzle firing? In this preliminary report, we briefly illustrate that part of the printing pipeline that starts from a halftone image and ends with Hardware Ready Bits (HRBs). We also describe the implementation of the multi-pass printing method with a designed print mask. HRBs are used to read an input halftone CMY image and output a binary map of each color to decide whether or not to eject the corresponding coloranr drop at each pixel position. In general, for an inkjet printer, each row of the image corresponds to one specific nozzle in each swath so that each swath will be the height of the printhead. To avoid visible white streaks due to clogged or burned out color nozzles, the method called multi-pass printing is implemented. Subsequently, the print mask is introduced so that we can decide during which pass each pixel should be printed. Once we figure out how to transfer the digital image to our printing signals. We start to think about improving the color performance for the inkjet printer. In one of our previous papers, we described the color management pipeline that was applied to our nail inkjet printer, which is used to map the source gamut to the destination printer gamut. However, the resulting prints are not as vivid as we would like to have, since those prints are not well saturated. To obtain more saturated prints, we propose a saturation enhancement method based on image segmentation and hue angle. This method will not necessarily give us the closest representation of the colors within the input image but could give us more saturated prints. The main idea of our saturation enhancement method is to keep the lightness and hue constant, while stretching the chroma component.In one of our previous papers, we mostly focused on the color saturation problem in our inkjet printer. However, our partner reported that there are some boundary noise pixels on the background, which are quite visible when the background is white. By checking the pipeline of our printing procedure, we realized that the noise stray dots are generated during the halftoning procedure. This part of the dissertation is dedicated to separating the white background from the foreground, which enables us to constrain the error diffusion process inside the white background. The main idea is to apply image segmentation, which could help us to precisely extract the background.Lastly, inspired by the paper, we decided to design an aperiodic clustered-dot screen, which may have better performance compared to the current DBS screen. This screen generation method is offline, so the time cost is not our main consideration. The output halftone result is what we concentrate on. This screen is generated based on a polygon shape, which is called tile(1,1) defined by the paper. We keep extending this single polygon shape to obtain the combination aperiodic shape that is called a supertile. After obtaining the final supertile, we assigned each tile(1,1) shape to either a dot or a hole based on the complementary symmetry property. Finally, based on some interpolation methods, we generate the threshold matrix.
일반주제명  
Ink jet printers
일반주제명  
Nozzles
일반주제명  
Electrical engineering
기타저자  
Purdue University.
기본자료저록  
Dissertations Abstracts International. 86-05B.
전자적 위치 및 접속  
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MARC

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■035    ▼a(MiAaPQ)Purdue26342011
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a686.22
■1001  ▼aHu,  Sige.
■24510▼aDevelopment  of  an  Inkjet  Printer  and  a  Novel  Design  for  Aperiodic  Clustered-dot  Halftone
■260    ▼a[Sl]▼bPurdue  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a128  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-05,  Section:  B.
■500    ▼aAdvisor:  Allebach,  Jan  P.;Zhu,  Fengqing  M.;Zoltowski,  Michael  D.;Chiu,  George  T.C.
■5021  ▼aThesis  (Ph.D.)--Purdue  University,  2024.
■520    ▼aNowadays,  inkjet  printers  are  widely  used  all  around  the  world.  But  how  do  they  transfer  the  digital  image  to  a  map  that  can  control  nozzle  firing?  In  this  preliminary  report,  we  briefly  illustrate  that  part  of  the  printing  pipeline  that  starts  from  a  halftone  image  and  ends  with  Hardware  Ready  Bits  (HRBs).  We  also  describe  the  implementation  of  the  multi-pass  printing  method  with  a  designed  print  mask.  HRBs  are  used  to  read  an  input  halftone  CMY  image  and  output  a  binary  map  of  each  color  to  decide  whether  or  not  to  eject  the  corresponding  coloranr  drop  at  each  pixel  position.  In  general,  for  an  inkjet  printer,  each  row  of  the  image  corresponds  to  one  specific  nozzle  in  each  swath  so  that  each  swath  will  be  the  height  of  the  printhead.  To  avoid  visible  white  streaks  due  to  clogged  or  burned  out  color  nozzles,  the  method  called  multi-pass  printing  is  implemented.  Subsequently,  the  print  mask  is  introduced  so  that  we  can  decide  during  which  pass  each  pixel  should  be  printed.  Once  we  figure  out  how  to  transfer  the  digital  image  to  our  printing  signals.  We  start  to  think  about  improving  the  color  performance  for  the  inkjet  printer.  In  one  of  our  previous  papers,  we  described  the  color  management  pipeline  that  was  applied  to  our  nail  inkjet  printer,  which  is  used  to  map  the  source  gamut  to  the  destination  printer  gamut.  However,  the  resulting  prints  are  not  as  vivid  as  we  would  like  to  have,  since  those  prints  are  not  well  saturated.  To  obtain  more  saturated  prints,  we  propose  a  saturation  enhancement  method  based  on  image  segmentation  and  hue  angle.  This  method  will  not  necessarily  give  us  the  closest  representation  of  the  colors  within  the  input  image  but  could  give  us  more  saturated  prints.  The  main  idea  of  our  saturation  enhancement  method  is  to  keep  the  lightness  and  hue  constant,  while  stretching  the  chroma  component.In  one  of  our  previous  papers,  we  mostly  focused  on  the  color  saturation  problem  in  our  inkjet  printer.  However,  our  partner  reported  that  there  are  some  boundary  noise  pixels  on  the  background,  which  are  quite  visible  when  the  background  is  white.  By  checking  the  pipeline  of  our  printing  procedure,  we  realized  that  the  noise  stray  dots  are  generated  during  the  halftoning  procedure.  This  part  of  the  dissertation  is  dedicated  to  separating  the  white  background  from  the  foreground,  which  enables  us  to  constrain  the  error  diffusion  process  inside  the  white  background.  The  main  idea  is  to  apply  image  segmentation,  which  could  help  us  to  precisely  extract  the  background.Lastly,  inspired  by  the  paper,  we  decided  to  design  an  aperiodic  clustered-dot  screen,  which  may  have  better  performance  compared  to  the  current  DBS  screen.  This  screen  generation  method  is  offline,  so  the  time  cost  is  not  our  main  consideration.  The  output  halftone  result  is  what  we  concentrate  on.  This  screen  is  generated  based  on  a  polygon  shape,  which  is  called  tile(1,1)  defined  by  the  paper.  We  keep  extending  this  single  polygon  shape  to  obtain  the  combination  aperiodic  shape  that  is  called  a  supertile.  After  obtaining  the  final  supertile,  we  assigned  each  tile(1,1)  shape  to  either  a  dot  or  a  hole  based  on  the  complementary  symmetry  property.  Finally,  based  on  some  interpolation  methods,  we  generate  the  threshold  matrix.
■590    ▼aSchool  code:  0183.
■650  4▼aInk  jet  printers
■650  4▼aNozzles
■650  4▼aElectrical  engineering
■690    ▼a0544
■71020▼aPurdue  University.
■7730  ▼tDissertations  Abstracts  International▼g86-05B.
■790    ▼a0183
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164297▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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