Developing an inkjet printer III: Multibit CMY halftones to hardware-ready bits

2020 ◽  
Vol 2020 (15) ◽  
pp. 352-1-352-9
Author(s):  
Sige Hu ◽  
Daulet Kenzhebalin ◽  
Bakedu Choi ◽  
George Chiu ◽  
Zillion Lin ◽  
...  
Keyword(s):  
Digital Image ◽  
Halftone Image ◽  
The World ◽  
Inkjet Printers ◽  
Inkjet Printer ◽  
Printing Method

Nowadays, 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 paper, we briefly illustrate that part of the printing pipeline that starts from a halftone image and end 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 color 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 [1]. 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.

A basic introduction to image processing using NIH-Image as a model

1994 ◽  
Vol 52 ◽  
pp. 392-393
Author(s):  
John Mansfield
Keyword(s):  
Image Processing ◽  
Digital Image ◽  
Image Acquisition ◽  
Digital Instrument ◽  
Novice User ◽  
Nih Image ◽  
The Past ◽  
Digital World ◽  
The World ◽  
Instrument Control

Advances in camera technology and digital instrument control have meant that in modern microscopy, the image that was, in the past, typically recorded on a piece of film is now recorded directly into a computer. The transfer of the analog image seen in the microscope to the digitized picture in the computer does not mean, however, that the problems associated with recording images, analyzing them, and preparing them for publication, have all miraculously been solved. The steps involved in the recording an image to film remain largely intact in the digital world. The image is recorded, prepared for measurement in some way, analyzed, and then prepared for presentation.Digital image acquisition schemes are largely the realm of the microscope manufacturers, however, there are also a multitude of “homemade” acquisition systems in microscope laboratories around the world. It is not the mission of this tutorial to deal with the various acquisition systems, but rather to introduce the novice user to rudimentary image processing and measurement.

scholarly journals Digital Image Processing and CCD Imaging at Gothard Astrophysical Observatory

1994 ◽  
Vol 161 ◽  
pp. 82-83
Author(s):  
I. Jankovics ◽  
J. Kovács ◽  
I.J. Vincze
Keyword(s):  
Image Processing ◽  
Digital Image Processing ◽  
Digital Image ◽  
Central Star ◽  
Ccd Imaging ◽  
Ring Nebula ◽  
The World

The Gothard Astrophysical Observatory of Loránd Eötvös University was founded in 1881 by Eugene von Gothard, the first astronomer in the world who took a photo of the central star of Ring nebula. After nearly 80 years interregnum, the observatory was revitalized by Eötvös University in 1992 and its equipment is used both for education and for research.

Developing an inkjet printer II : CMY ink amounts to multibit CMY halftones

2020 ◽  
Vol 2020 (15) ◽  
pp. 351-1-351-9
Author(s):  
Baekdu Choi ◽  
Daulet Kenzhebalin ◽  
Sige Hu ◽  
George Chiu ◽  
Davi He ◽  
...  
Keyword(s):  
Input Image ◽  
Error Diffusion ◽  
Halftone Image ◽  
Inkjet Printer ◽  
Halftone Images

In this paper, we propose a novel error diffusion halftoning algorithm for the conversion of cyan, magenta and yellow (CMY) ink amounts to a multi-bit halftone image. We adopt the idea of allowing multiple drops of colorants in order to achieve print results with better saturation, which is implemented by modifying the classic Floyd-Steinberg error diffusion algorithm. For better halftone texture and more efficient use of colorants, we add a dot-off-dot feature to the classic Floyd-Steinberg error diffusion. Blending-in the original input image with its DBS screened multilevel halftone image as a preprocessing step to dot-off-dot error diffusion is proposed as a measure to reduce halftone artifacts. Digitally simulated halftone images will be presented to illustrate the better halftone texture that can be achieved by applying the proposed algorithm.

scholarly journals Visualizing Global Socio-Technogenic Human Transformation: Digital Challenges of Living Earth

2020 ◽  
pp. paper44-1-paper44-14 ◽  
Author(s):  
Elena Dergacheva ◽  
Eduard Demidenko
Keyword(s):  
Virtual Environment ◽  
Digital Image ◽  
Point Of View ◽  
Natural Health ◽  
Digital Space ◽  
Digital Earth ◽  
Evolutionary Changes ◽  
The World ◽  
Man And Nature ◽  
Philosophical Understanding

In the XXI century, the world of man and nature develops mainly in socio-technogenic living conditions. Global technospherization of the planet Earth is the most important cause of continuous socio-cultural, techno-medical and biological changes in man. In technical, natural and human studies a human is usually considered from the point of view of only one discipline. This narrow approach leaves its incorrect mark when recreating the new image of a human in the virtual environment of the digital image of the world. Digital Earth technologies establish a link between the spheres: social, biospheric, natural-inanimate and artificial, created by society using a number of important sciences. It is necessary to approach systematically the representation of the evolving human being in the constantly updated digital space of the planet, to supplement the existing developments of scientists with a scientific and philosophical understanding of the interdisciplinary processes of socio-technogenic development of the biosphere life. Scientific visualization of interrelated evolutionary changes in man is of great interest for the Digital Earth project both from the point of view of studying anthropogenesis, and from the point of view of developing promising programs for preserving his biosphere body and natural health in a developing socio-technogenic world.

scholarly journals Digital Image Analysis of Spices and Condiments for Plant Taxonomic Studies

2021 ◽  
Author(s):  
Haider Iqbal Khan ◽  
MIRA RANI DAS ◽  
MA BASET MIA
Keyword(s):  
Digital Image ◽  
Large Body ◽  
User Interaction ◽  
Virtual Technology ◽  
Web Based ◽  
Research Material ◽  
The World ◽  
Access Information ◽  
Herbarium Collections ◽  
Taxonomic Studies

Abstract To address the contemporary demand of the world in the 21st century with the development of virtual technology, and to make the smart way of action with more efficiency, the department of Crop Botany, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) have taken a step to launch a web-based computerized version of Digital Herbarium and Herbarium Museum of crop plants. This digital herbarium holds a large body of collections of images of special crops such as spices and condiments for improving academic and research capability which can be accessed anytime from anywhere in the world. Images can easily mirror and elucidate the characters that can be described theoretically. Photographic specimens can provide an important complement to herbarium collections by providing teaching and identify resources that are easily accessible to the community with digital herbarium. Digital image also guarantees instant access and increased user interaction as multiple people can work on a single model simultaneously and easily access information on descriptive details, published work, microscopic preparations, and nomenclature. The launched Digital Herbarium intends to make maximum use of primary research material to connect the research community and general public, including school children, and take care of public interest and enthusiasm for teaching spices and condiments.

scholarly journals Cinema, the (Digital) Machine of the Imaginary: Revisiting Edgar Morin in the Quest to Create a Theory of Cinema in the Digital Age1

2014 ◽  
Vol 31 (1-2-3) ◽  
pp. 203-221
Author(s):  
Diana Wade
Keyword(s):  
Digital Image ◽  
New Technologies ◽  
Digital Age ◽  
Moving Images ◽  
Mirror Machine ◽  
The World ◽  
Production And Distribution

Digital image technology facilitates the production and distribution of images, and at the same time, instills doubt as to the integrity of those images. As a result, spectators today trust and doubt the image while still retaining a need to see a double of the world on screen. Edgar Morin’s work on cinema permits us to speak of cinema in the digital age because he recognizes that from its origins cinema has been a “mirror-machine” that reflects the spectator’s imaginary and practical relationship with images as experienced through new technologies. I will explore Morin and Christian Metz’s writings on cinema to analyze cinema’s foundational element : the ability to satisfy the besoin de cinéma throughout changes in technology. Cinema persists as digital moving images because by evolving technologically it responds to the spectator’s need to see a double of the world on screen in order to negotiate the demands of society and personal desires.

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